Built 2026-10-17 (17 October 2026)

Red Bluff Muni AP Weather Records (USW00024216)

Record envelope, standing records and threshold days for Red Bluff Muni AP (USW00024216), California, United States, with 135 years of record.

Key Facts for Red Bluff Muni AP

  • Red Bluff Muni AP (USW00024216) is a weather station in California, United States at 40.15 latitude and -122.25 longitude, 108 m (354 ft) above sea level.
  • The station reports from 1892 to 2026, 135 years of record.
  • 1,464 records set at Red Bluff Muni AP still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Red Bluff Muni AP set a daily record high maximum temperature of 38.3 C (100.9 F) on 8 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: California, United States, 40.15 latitude, -122.25 longitude.
  • Elevation: 108 m (354 ft).
  • Period of record: 1892 to 2026, 135 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

8 days at or beyond a record
Daily record high and record low at Red Bluff Muni AP, with 2026 drawn through them The band shows the record high and record low for each calendar day at Red Bluff Muni AP. The lines show the 2026 daily maximum and minimum. 8 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Red Bluff Muni AP. The lines show the 2026 daily maximum and minimum. 8 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Red Bluff Muni AP, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan26.7 C (80.1 F)-8.3 C (17.1 F)24.4 C (75.9 F)-0.6 C (30.9 F)
Feb30.0 C (86.0 F)-6.1 C (21.0 F)24.4 C (75.9 F)-2.2 C (28.0 F)
Mar33.3 C (91.9 F)-3.3 C (26.1 F)32.2 C (90.0 F)5.6 C (42.1 F)
Apr36.7 C (98.1 F)-2.2 C (28.0 F)30.6 C (87.1 F)4.4 C (39.9 F)
May42.2 C (108.0 F)0.6 C (33.1 F)35.0 C (95.0 F)7.8 C (46.0 F)
Jun47.2 C (117.0 F)5.6 C (42.1 F)42.8 C (109.0 F)11.7 C (53.1 F)
Jul48.3 C (118.9 F)11.1 C (52.0 F)40.0 C (104.0 F)13.3 C (55.9 F)
Aug49.4 C (120.9 F)10.0 C (50.0 F)42.2 C (108.0 F)12.2 C (54.0 F)
Sep47.8 C (118.0 F)5.0 C (41.0 F)39.4 C (102.9 F)9.4 C (48.9 F)
Oct41.7 C (107.1 F)-1.1 C (30.0 F)38.3 C (100.9 F)12.8 C (55.0 F)
Nov33.9 C (93.0 F)-4.4 C (24.1 F)n/an/a
Dec28.3 C (82.9 F)-10.6 C (12.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Red Bluff Muni AP by the year they were set 1,464 records at Red Bluff Muni AP still stand. 1950 holds the most, with 38. 0102030401935: 181936: 181937: 291938: 111939: 211940: 151941: 221942: 141943: 201944: 231945: 201946: 191947: 151948: 311949: 151950: 381951: 111952: 191953: 191954: 71955: 251956: 131957: 101958: 161959: 141960: 111961: 161962: 181963: 131964: 181965: 101966: 221967: 251968: 211969: 111970: 151971: 171972: 381973: 81974: 141975: 151976: 101977: 231978: 201979: 41980: 111981: 71982: 211983: 141984: 141985: 331986: 51988: 271989: 221990: 261991: 171992: 111993: 111994: 71995: 111996: 161997: 61998: 151999: 232000: 192001: 92002: 82003: 142004: 122005: 92006: 182007: 222008: 162009: 132010: 132011: 112012: 102013: 142014: 162015: 152016: 92017: 152018: 152019: 192020: 192021: 122022: 182023: 222024: 142025: 32026: 101935194519551965197519851996200620162026
1,464 records at Red Bluff Muni AP still stand. 1950 holds the most, with 38.
Standing records at Red Bluff Muni AP by the year they were set
Year setStanding records
193518
193618
193729
193811
193921
194015
194122
194214
194320
194423
194520
194619
194715
194831
194915
195038
195111
195219
195319
19547
195525
195613
195710
195816
195914
196011
196116
196218
196313
196418
196510
196622
196725
196821
196911
197015
197117
197238
19738
197414
197515
197610
197723
197820
19794
198011
19817
198221
198314
198414
198533
19865
198827
198922
199026
199117
199211
199311
19947
199511
199616
19976
199815
199923
200019
20019
20028
200314
200412
20059
200618
200722
200816
200913
201013
201111
201210
201314
201416
201515
20169
201715
201815
201919
202019
202112
202218
202322
202414
20253
202610

All-Time Record Progression

9 new records
When Red Bluff Muni AP set new all-time records 9 all-time records were set at Red Bluff Muni AP between 10 August 1971 and 22 June 2017. Each dot is a new record. Record high maximum temperatureRecord high minimum temperatureRecord low maximum temperatureRecord low minimum temperature10 August 1971: Record high maximum temperature 47.8 C (118.0 F)14 July 1972: Record high minimum temperature 30.0 C (86.0 F)15 July 1972: Record high maximum temperature 48.3 C (118.9 F)14 December 1972: Record low maximum temperature -0.6 C (30.9 F)7 August 1981: Record high maximum temperature 49.4 C (120.9 F)21 December 1990: Record low maximum temperature -1.7 C (28.9 F)21 December 1990: Record low minimum temperature -10.0 C (14.0 F)23 December 1990: Record low minimum temperature -10.6 C (12.9 F)22 June 2017: Record high minimum temperature 30.6 C (87.1 F)1980199020002010
9 all-time records were set at Red Bluff Muni AP between 10 August 1971 and 22 June 2017. Each dot is a new record.
When Red Bluff Muni AP set new all-time records
DateKindDetail
1971-08-10Record high maximum temperatureRecord high maximum temperature 47.8 C (118.0 F)
1972-07-14Record high minimum temperatureRecord high minimum temperature 30.0 C (86.0 F)
1972-07-15Record high maximum temperatureRecord high maximum temperature 48.3 C (118.9 F)
1972-12-14Record low maximum temperatureRecord low maximum temperature -0.6 C (30.9 F)
1981-08-07Record high maximum temperatureRecord high maximum temperature 49.4 C (120.9 F)
1990-12-21Record low maximum temperatureRecord low maximum temperature -1.7 C (28.9 F)
1990-12-21Record low minimum temperatureRecord low minimum temperature -10.0 C (14.0 F)
1990-12-23Record low minimum temperatureRecord low minimum temperature -10.6 C (12.9 F)
2017-06-22Record high minimum temperatureRecord high minimum temperature 30.6 C (87.1 F)

Wettest Day of Each Month

Feb: 98.3 mm (3.9 in)
Record daily precipitation for each month at Red Bluff Muni AP The wettest day on record for each calendar month at Red Bluff Muni AP. The most was 98.3 mm (3.9 in) on 3 February 1909. 0255075100 Jan: 90.2 mm (3.6 in), 8 January 1995 Jan Feb: 98.3 mm (3.9 in), 3 February 1909 Feb Mar: 60.2 mm (2.4 in), 9 March 1995 Mar Apr: 54.4 mm (2.1 in), 6 April 2018 Apr May: 47.8 mm (1.9 in), 28 May 1998 May Jun: 30.5 mm (1.2 in), 16 June 1937 Jun Jul: 31.5 mm (1.2 in), 1 July 1916 Jul Aug: 25.7 mm (1.0 in), 20 August 1968 Aug Sep: 91.9 mm (3.6 in), 24 September 1904 Sep Oct: 86.6 mm (3.4 in), 24 October 1989 Oct Nov: 72.1 mm (2.8 in), 20 November 1903 Nov Dec: 85.6 mm (3.4 in), 1 December 1960 Dec
The wettest day on record for each calendar month at Red Bluff Muni AP. The most was 98.3 mm (3.9 in) on 3 February 1909.
Record daily precipitation for each month at Red Bluff Muni AP
MonthRecord daily precipitation (mm)Date
Jan90.2 mm (3.6 in)8 January 1995
Feb98.3 mm (3.9 in)3 February 1909
Mar60.2 mm (2.4 in)9 March 1995
Apr54.4 mm (2.1 in)6 April 2018
May47.8 mm (1.9 in)28 May 1998
Jun30.5 mm (1.2 in)16 June 1937
Jul31.5 mm (1.2 in)1 July 1916
Aug25.7 mm (1.0 in)20 August 1968
Sep91.9 mm (3.6 in)24 September 1904
Oct86.6 mm (3.4 in)24 October 1989
Nov72.1 mm (2.8 in)20 November 1903
Dec85.6 mm (3.4 in)1 December 1960

Period of Record Coverage

1934 to 2026
Days with data per year at Red Bluff Muni AP 92 years of record at Red Bluff Muni AP, 1934 to 2026. 6 years have data for under 90 percent of days and are left out of rankings: 1934, 1986, 1988, 1995, 1996, 2026. 1934: 92 of 365 days1935: 365 of 365 days1936: 356 of 366 days1937: 361 of 365 days1938: 363 of 365 days1939: 363 of 365 days1940: 334 of 366 days1941: 363 of 365 days1942: 361 of 365 days1943: 364 of 365 days1944: 362 of 366 days1945: 360 of 365 days1946: 360 of 365 days1947: 336 of 365 days1948: 365 of 366 days1949: 365 of 365 days1950: 365 of 365 days1951: 365 of 365 days1952: 364 of 366 days1953: 365 of 365 days1954: 365 of 365 days1955: 365 of 365 days1956: 366 of 366 days1957: 363 of 365 days1958: 365 of 365 days1959: 365 of 365 days1960: 366 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 235 of 365 days1988: 275 of 366 days1989: 365 of 365 days1990: 365 of 365 days1991: 356 of 365 days1992: 366 of 366 days1993: 345 of 365 days1994: 365 of 365 days1995: 323 of 365 days1996: 288 of 366 days1997: 363 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 366 of 366 days2001: 364 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 358 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 364 of 365 days2023: 365 of 365 days2024: 357 of 366 days2025: 350 of 365 days2026: 285 of 365 days1935195019651980199520102025
92 years of record at Red Bluff Muni AP, 1934 to 2026. 6 years have data for under 90 percent of days and are left out of rankings: 1934, 1986, 1988, 1995, 1996, 2026.
Days with data per year at Red Bluff Muni AP
YearDays with dataShare of yearComplete
19349225%No
1935365100%Yes
193635697%Yes
193736199%Yes
193836399%Yes
193936399%Yes
194033491%Yes
194136399%Yes
194236199%Yes
1943364100%Yes
194436299%Yes
194536099%Yes
194636099%Yes
194733692%Yes
1948365100%Yes
1949365100%Yes
1950365100%Yes
1951365100%Yes
195236499%Yes
1953365100%Yes
1954365100%Yes
1955365100%Yes
1956366100%Yes
195736399%Yes
1958365100%Yes
1959365100%Yes
1960366100%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
1964366100%Yes
1965365100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
198623564%No
198827575%No
1989365100%Yes
1990365100%Yes
199135698%Yes
1992366100%Yes
199334595%Yes
1994365100%Yes
199532388%No
199628879%No
199736399%Yes
1998365100%Yes
1999365100%Yes
2000366100%Yes
2001364100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
201935898%Yes
2020366100%Yes
2021365100%Yes
2022364100%Yes
2023365100%Yes
202435798%Yes
202535096%Yes
202628578%No

Latest Records

20
Latest records at Red Bluff Muni AP
DateStationRecordValueBeat old record byOld record stoodSignificance
8 October 2026Red Bluff Muni AP, USdaily high max (Provisional)38.3 C (100.9 F)0.5 C (0.9 F)55 years25 of 100 (Routine)
3 September 2026Red Bluff Muni AP, USdaily low max (Provisional)20.6 C (69.1 F)3.8 C (6.8 F)25 years23 of 100 (Routine)
2 September 2026Red Bluff Muni AP, USdaily low max (Tie, Provisional)22.8 C (73.0 F)tie25 years4 of 100 (Routine)
3 August 2026Red Bluff Muni AP, USdaily high min (Tie)25.6 C (78.1 F)tie1 year2 of 100 (Routine)
12 June 2026Red Bluff Muni AP, USdaily high min (Tie)22.2 C (72.0 F)tie40 years5 of 100 (Routine)
21 April 2026Red Bluff Muni AP, USdaily rain17.5 mm (0.7 in)0.2 mm (0.01 in)125 years20 of 100 (Routine)
28 March 2026Red Bluff Muni AP, USdaily high max29.4 C (84.9 F)0.5 C (0.9 F)57 years27 of 100 (Routine)
22 March 2026Red Bluff Muni AP, USmonthly high min (Tie)15.0 C (59.0 F)tie70 years10 of 100 (Routine)
21 March 2026Red Bluff Muni AP, USdaily high max30.0 C (86.0 F)1.7 C (3.1 F)21 years18 of 100 (Routine)
20 March 2026Red Bluff Muni AP, USdaily high max30.6 C (87.1 F)1.7 C (3.1 F)79 years35 of 100 (Notable)
19 March 2026Red Bluff Muni AP, USdaily high max31.1 C (88.0 F)0.5 C (0.9 F)87 years36 of 100 (Notable)
18 March 2026Red Bluff Muni AP, USdaily high max30.0 C (86.0 F)1.1 C (2.0 F)29 years19 of 100 (Routine)
16 March 2026Red Bluff Muni AP, USdaily high max32.2 C (90.0 F)0.5 C (0.9 F)79 years33 of 100 (Routine)
1 March 2026Red Bluff Muni AP, USdaily high min12.2 C (54.0 F)0.5 C (0.9 F)57 years27 of 100 (Routine)
28 February 2026Red Bluff Muni AP, USmonthly high min13.9 C (57.0 F)0.6 C (1.1 F)58 years37 of 100 (Notable)
25 February 2026Red Bluff Muni AP, USdaily high min (Tie)12.2 C (54.0 F)tie86 years8 of 100 (Routine)
24 February 2026Red Bluff Muni AP, USdaily high min (Tie)11.7 C (53.1 F)tie68 years7 of 100 (Routine)
20 February 2026Red Bluff Muni AP, USdaily low min (Tie)-2.2 C (28.0 F)tie20 years3 of 100 (Routine)
3 January 2026Red Bluff Muni AP, USdaily high min11.1 C (52.0 F)1.7 C (3.1 F)48 years27 of 100 (Routine)
29 November 2025Red Bluff Muni AP, USdaily low max7.2 C (45.0 F)0.6 C (1.1 F)20 years16 of 100 (Routine)

Climate Trend

82 complete years, 1935 to 2024
Annual mean temperature at Red Bluff Muni AP as warming stripes, 1935 to 2024 One stripe for each of 82 complete years at Red Bluff Muni AP, 1935 to 2024. Blue stripes are years cooler than the station's own mean of 17.3 C (63.1 F); red stripes are warmer. The coolest year was 1948, at 15.6 C (60.1 F), and the warmest was 2014, at 18.8 C (65.9 F). The strongest colour marks a difference of 1.7 C (3.1 F). 1935: 16.7 C, -0.5 C from the station mean1936: 17.7 C, +0.4 C from the station mean1937: 16.6 C, -0.7 C from the station mean1938: 17.3 C, 0.0 C from the station mean1939: 17.8 C, +0.6 C from the station mean1941: 17.0 C, -0.3 C from the station mean1942: 16.5 C, -0.8 C from the station mean1943: 17.1 C, -0.2 C from the station mean1944: 16.9 C, -0.4 C from the station mean1945: 17.0 C, -0.3 C from the station mean1946: 16.5 C, -0.7 C from the station mean1948: 15.6 C, -1.6 C from the station mean1949: 16.9 C, -0.3 C from the station mean1950: 17.5 C, +0.2 C from the station mean1951: 17.2 C, 0.0 C from the station mean1952: 17.1 C, -0.2 C from the station mean1953: 17.0 C, -0.2 C from the station mean1954: 16.6 C, -0.6 C from the station mean1955: 16.6 C, -0.7 C from the station mean1956: 16.9 C, -0.4 C from the station mean1957: 16.6 C, -0.7 C from the station mean1958: 17.9 C, +0.7 C from the station mean1959: 18.3 C, +1.0 C from the station mean1960: 17.5 C, +0.2 C from the station mean1961: 17.2 C, -0.1 C from the station mean1962: 17.1 C, -0.1 C from the station mean1963: 16.2 C, -1.1 C from the station mean1964: 16.8 C, -0.4 C from the station mean1965: 16.6 C, -0.7 C from the station mean1966: 17.6 C, +0.3 C from the station mean1967: 17.1 C, -0.2 C from the station mean1968: 17.1 C, -0.2 C from the station mean1969: 17.2 C, -0.1 C from the station mean1970: 17.4 C, +0.1 C from the station mean1971: 16.4 C, -0.9 C from the station mean1972: 16.6 C, -0.7 C from the station mean1973: 16.8 C, -0.4 C from the station mean1974: 17.0 C, -0.3 C from the station mean1975: 16.3 C, -1.0 C from the station mean1976: 17.6 C, +0.4 C from the station mean1977: 17.9 C, +0.6 C from the station mean1978: 18.2 C, +0.9 C from the station mean1979: 18.0 C, +0.7 C from the station mean1980: 17.6 C, +0.3 C from the station mean1981: 18.3 C, +1.1 C from the station mean1982: 16.1 C, -1.1 C from the station mean1983: 16.9 C, -0.4 C from the station mean1984: 17.2 C, -0.1 C from the station mean1985: 17.0 C, -0.2 C from the station mean1989: 17.1 C, -0.2 C from the station mean1990: 17.4 C, +0.2 C from the station mean1991: 17.6 C, +0.4 C from the station mean1992: 17.7 C, +0.5 C from the station mean1994: 16.6 C, -0.7 C from the station mean1997: 17.3 C, +0.1 C from the station mean1998: 15.9 C, -1.4 C from the station mean1999: 16.4 C, -0.9 C from the station mean2000: 16.7 C, -0.6 C from the station mean2001: 17.4 C, +0.2 C from the station mean2002: 17.3 C, 0.0 C from the station mean2003: 17.2 C, -0.1 C from the station mean2004: 17.4 C, +0.1 C from the station mean2005: 17.0 C, -0.3 C from the station mean2006: 17.0 C, -0.2 C from the station mean2007: 17.2 C, 0.0 C from the station mean2008: 17.5 C, +0.2 C from the station mean2009: 17.5 C, +0.2 C from the station mean2010: 16.7 C, -0.5 C from the station mean2011: 16.6 C, -0.7 C from the station mean2012: 17.5 C, +0.2 C from the station mean2013: 18.0 C, +0.7 C from the station mean2014: 18.8 C, +1.6 C from the station mean2015: 18.7 C, +1.5 C from the station mean2016: 18.1 C, +0.8 C from the station mean2017: 18.2 C, +0.9 C from the station mean2018: 18.0 C, +0.8 C from the station mean2019: 17.6 C, +0.4 C from the station mean2020: 18.7 C, +1.4 C from the station mean2021: 18.4 C, +1.1 C from the station mean2022: 18.4 C, +1.2 C from the station mean2023: 17.6 C, +0.3 C from the station mean2024: 18.6 C, +1.4 C from the station mean1935194019501960197019801990200020102020
One stripe for each of 82 complete years at Red Bluff Muni AP, 1935 to 2024. Blue stripes are years cooler than the station's own mean of 17.3 C (63.1 F); red stripes are warmer. The coolest year was 1948, at 15.6 C (60.1 F), and the warmest was 2014, at 18.8 C (65.9 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Red Bluff Muni AP as warming stripes, 1935 to 2024
YearAnnual mean temperatureDifference from the station mean
193516.7 C-0.51 C
193617.7 C+0.43 C
193716.6 C-0.66 C
193817.3 C+0.01 C
193917.8 C+0.56 C
194117.0 C-0.26 C
194216.5 C-0.80 C
194317.1 C-0.20 C
194416.9 C-0.38 C
194517.0 C-0.28 C
194616.5 C-0.74 C
194815.6 C-1.63 C
194916.9 C-0.32 C
195017.5 C+0.22 C
195117.2 C-0.04 C
195217.1 C-0.15 C
195317.0 C-0.23 C
195416.6 C-0.63 C
195516.6 C-0.66 C
195616.9 C-0.36 C
195716.6 C-0.65 C
195817.9 C+0.66 C
195918.3 C+1.01 C
196017.5 C+0.21 C
196117.2 C-0.09 C
196217.1 C-0.11 C
196316.2 C-1.07 C
196416.8 C-0.41 C
196516.6 C-0.68 C
196617.6 C+0.35 C
196717.1 C-0.19 C
196817.1 C-0.15 C
196917.2 C-0.05 C
197017.4 C+0.15 C
197116.4 C-0.90 C
197216.6 C-0.69 C
197316.8 C-0.42 C
197417.0 C-0.30 C
197516.3 C-1.00 C
197617.6 C+0.38 C
197717.9 C+0.64 C
197818.2 C+0.92 C
197918.0 C+0.70 C
198017.6 C+0.30 C
198118.3 C+1.06 C
198216.1 C-1.12 C
198316.9 C-0.39 C
198417.2 C-0.07 C
198517.0 C-0.22 C
198917.1 C-0.18 C
199017.4 C+0.16 C
199117.6 C+0.39 C
199217.7 C+0.48 C
199416.6 C-0.65 C
199717.3 C+0.06 C
199815.9 C-1.35 C
199916.4 C-0.90 C
200016.7 C-0.59 C
200117.4 C+0.19 C
200217.3 C+0.05 C
200317.2 C-0.10 C
200417.4 C+0.15 C
200517.0 C-0.29 C
200617.0 C-0.21 C
200717.2 C-0.03 C
200817.5 C+0.25 C
200917.5 C+0.25 C
201016.7 C-0.52 C
201116.6 C-0.68 C
201217.5 C+0.21 C
201318.0 C+0.71 C
201418.8 C+1.57 C
201518.7 C+1.48 C
201618.1 C+0.83 C
201718.2 C+0.93 C
201818.0 C+0.78 C
201917.6 C+0.37 C
202018.7 C+1.45 C
202118.4 C+1.11 C
202218.4 C+1.17 C
202317.6 C+0.30 C
202418.6 C+1.38 C

The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1935 to 2024. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 82 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Red Bluff Muni AP
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.1 C (0.1 to 0.2) per decade0.2 F (0.1 to 0.3) per decade1935 to 202482Rise
Mean daily maximum0.10 C (0.02 to 0.17) per decade0.17 F (0.04 to 0.30) per decade1935 to 202482Rise
Mean daily minimum0.1 C (0.1 to 0.2) per decade0.2 F (0.1 to 0.3) per decade1935 to 202482Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1892 to 2026
Yearly extremes at Red Bluff Muni AP: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)49.4 C (120.9 F)198143.9 C (111.0 F)92
Coldest night (TNn)-10.6 C (12.9 F)1990-3.9 C (25.0 F)92
Wettest day (Rx1day)98.3 mm (3.9 in)190948.3 mm (1.9 in)134
Wettest five days (Rx5day)237.0 mm (9.3 in)199590.4 mm (3.6 in)134
Longest dry spell (CDD)168 days200296 days134

Hottest day (TXx)

Hottest day (TXx) at Red Bluff Muni AP by year The hottest day of the year at Red Bluff Muni AP, 1892 to 2026. The record is 49.4 C (120.9 F) in 1981, marked on the chart; the median year is 43.9 C (111.0 F). 354045501900192019401960198020002020Record: 49.4 C (120.9 F) in 1981
The hottest day of the year at Red Bluff Muni AP, 1892 to 2026. The record is 49.4 C (120.9 F) in 1981, marked on the chart; the median year is 43.9 C (111.0 F).
Hottest day (TXx) at Red Bluff Muni AP by year
YearHottest day (TXx)
1892n/a
1893n/a
1894n/a
1895n/a
1896n/a
1897n/a
1898n/a
1899n/a
1900n/a
1901n/a
1902n/a
1903n/a
1904n/a
1905n/a
1906n/a
1907n/a
1908n/a
1909n/a
1910n/a
1911n/a
1912n/a
1913n/a
1914n/a
1915n/a
1916n/a
1917n/a
1918n/a
1919n/a
1920n/a
1921n/a
1922n/a
1923n/a
1924n/a
1925n/a
1926n/a
1927n/a
1928n/a
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
193437.8 C (100.0 F)
193545.6 C (114.1 F)
193643.3 C (109.9 F)
193743.3 C (109.9 F)
193844.4 C (111.9 F)
193943.3 C (109.9 F)
194042.8 C (109.0 F)
194141.7 C (107.1 F)
194246.1 C (115.0 F)
194343.3 C (109.9 F)
194444.4 C (111.9 F)
194545.6 C (114.1 F)
194646.1 C (115.0 F)
194741.7 C (107.1 F)
194843.3 C (109.9 F)
194942.2 C (108.0 F)
195045.6 C (114.1 F)
195143.3 C (109.9 F)
195243.3 C (109.9 F)
195342.8 C (109.0 F)
195442.8 C (109.0 F)
195543.9 C (111.0 F)
195644.4 C (111.9 F)
195742.8 C (109.0 F)
195842.2 C (108.0 F)
195944.4 C (111.9 F)
196045.6 C (114.1 F)
196145.0 C (113.0 F)
196242.8 C (109.0 F)
196340.6 C (105.1 F)
196443.9 C (111.0 F)
196542.2 C (108.0 F)
196643.3 C (109.9 F)
196743.3 C (109.9 F)
196843.3 C (109.9 F)
196943.3 C (109.9 F)
197044.4 C (111.9 F)
197147.8 C (118.0 F)
197248.3 C (118.9 F)
197343.9 C (111.0 F)
197443.3 C (109.9 F)
197545.6 C (114.1 F)
197643.9 C (111.0 F)
197745.0 C (113.0 F)
197848.3 C (118.9 F)
197944.4 C (111.9 F)
198044.4 C (111.9 F)
198149.4 C (120.9 F)
198242.8 C (109.0 F)
198342.8 C (109.0 F)
198445.0 C (113.0 F)
198543.3 C (109.9 F)
198643.3 C (109.9 F)
198847.8 C (118.0 F)
198943.9 C (111.0 F)
199047.8 C (118.0 F)
199145.6 C (114.1 F)
199243.3 C (109.9 F)
199343.9 C (111.0 F)
199442.8 C (109.0 F)
199543.3 C (109.9 F)
199645.0 C (113.0 F)
199742.8 C (109.0 F)
199844.4 C (111.9 F)
199946.1 C (115.0 F)
200043.9 C (111.0 F)
200142.8 C (109.0 F)
200245.6 C (114.1 F)
200346.1 C (115.0 F)
200441.7 C (107.1 F)
200545.0 C (113.0 F)
200647.2 C (117.0 F)
200743.9 C (111.0 F)
200845.0 C (113.0 F)
200944.4 C (111.9 F)
201043.9 C (111.0 F)
201143.3 C (109.9 F)
201244.4 C (111.9 F)
201346.7 C (116.1 F)
201444.4 C (111.9 F)
201545.0 C (113.0 F)
201643.3 C (109.9 F)
201745.6 C (114.1 F)
201844.4 C (111.9 F)
201943.3 C (109.9 F)
202045.0 C (113.0 F)
202146.1 C (115.0 F)
202245.6 C (114.1 F)
202345.0 C (113.0 F)
202447.8 C (118.0 F)
202541.1 C (106.0 F)
202642.8 C (109.0 F)

Coldest night (TNn)

Coldest night (TNn) at Red Bluff Muni AP by year The coldest night of the year at Red Bluff Muni AP, 1892 to 2026. The record is -10.6 C (12.9 F) in 1990, marked on the chart; the median year is -3.9 C (25.0 F). -12.5-10-7.5-5-2.501900192019401960198020002020Record: -10.6 C (12.9 F) in 1990
The coldest night of the year at Red Bluff Muni AP, 1892 to 2026. The record is -10.6 C (12.9 F) in 1990, marked on the chart; the median year is -3.9 C (25.0 F).
Coldest night (TNn) at Red Bluff Muni AP by year
YearColdest night (TNn)
1892n/a
1893n/a
1894n/a
1895n/a
1896n/a
1897n/a
1898n/a
1899n/a
1900n/a
1901n/a
1902n/a
1903n/a
1904n/a
1905n/a
1906n/a
1907n/a
1908n/a
1909n/a
1910n/a
1911n/a
1912n/a
1913n/a
1914n/a
1915n/a
1916n/a
1917n/a
1918n/a
1919n/a
1920n/a
1921n/a
1922n/a
1923n/a
1924n/a
1925n/a
1926n/a
1927n/a
1928n/a
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
1934-0.6 C (30.9 F)
1935-4.4 C (24.1 F)
1936-2.8 C (27.0 F)
1937-8.3 C (17.1 F)
1938-3.9 C (25.0 F)
1939-3.3 C (26.1 F)
1940-5.6 C (21.9 F)
1941-2.2 C (28.0 F)
1942-5.0 C (23.0 F)
1943-6.7 C (19.9 F)
1944-2.2 C (28.0 F)
1945-5.0 C (23.0 F)
1946-3.9 C (25.0 F)
1947-5.0 C (23.0 F)
1948-5.0 C (23.0 F)
1949-5.0 C (23.0 F)
1950-6.1 C (21.0 F)
1951-2.8 C (27.0 F)
1952-3.9 C (25.0 F)
1953-1.1 C (30.0 F)
1954-2.8 C (27.0 F)
1955-3.9 C (25.0 F)
1956-3.9 C (25.0 F)
1957-3.9 C (25.0 F)
1958-2.2 C (28.0 F)
1959-3.9 C (25.0 F)
1960-5.6 C (21.9 F)
1961-3.3 C (26.1 F)
1962-6.1 C (21.0 F)
1963-4.4 C (24.1 F)
1964-2.8 C (27.0 F)
1965-5.6 C (21.9 F)
1966-4.4 C (24.1 F)
1967-5.6 C (21.9 F)
1968-6.7 C (19.9 F)
1969-4.4 C (24.1 F)
1970-5.6 C (21.9 F)
1971-2.8 C (27.0 F)
1972-6.7 C (19.9 F)
1973-5.0 C (23.0 F)
1974-2.8 C (27.0 F)
1975-6.7 C (19.9 F)
1976-4.4 C (24.1 F)
1977-3.3 C (26.1 F)
1978-3.9 C (25.0 F)
1979-2.8 C (27.0 F)
1980-3.9 C (25.0 F)
1981-0.6 C (30.9 F)
1982-3.9 C (25.0 F)
1983-3.9 C (25.0 F)
1984-2.2 C (28.0 F)
1985-4.4 C (24.1 F)
1986-1.1 C (30.0 F)
1988-5.0 C (23.0 F)
1989-6.1 C (21.0 F)
1990-10.6 C (12.9 F)
1991-6.1 C (21.0 F)
1992-4.4 C (24.1 F)
1993-3.9 C (25.0 F)
1994-3.9 C (25.0 F)
1995-0.6 C (30.9 F)
1996-3.3 C (26.1 F)
1997-6.1 C (21.0 F)
1998-6.1 C (21.0 F)
1999-3.3 C (26.1 F)
2000-2.8 C (27.0 F)
2001-2.2 C (28.0 F)
2002-3.9 C (25.0 F)
2003-3.9 C (25.0 F)
2004-2.2 C (28.0 F)
2005-2.2 C (28.0 F)
2006-3.9 C (25.0 F)
2007-6.7 C (19.9 F)
2008-3.9 C (25.0 F)
2009-7.2 C (19.0 F)
2010-2.8 C (27.0 F)
2011-4.4 C (24.1 F)
2012-7.8 C (18.0 F)
2013-5.5 C (22.1 F)
2014-2.1 C (28.2 F)
2015-3.2 C (26.2 F)
2016-3.2 C (26.2 F)
2017-3.2 C (26.2 F)
2018-3.2 C (26.2 F)
2019-1.6 C (29.1 F)
2020-2.1 C (28.2 F)
2021-3.2 C (26.2 F)
2022-3.2 C (26.2 F)
2023-2.1 C (28.2 F)
2024-1.0 C (30.2 F)
2025-3.2 C (26.2 F)
2026-2.2 C (28.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Red Bluff Muni AP by year The wettest day of the year at Red Bluff Muni AP, 1892 to 2026. The record is 98.3 mm (3.9 in) in 1909, marked on the chart; the median year is 48.3 mm (1.9 in). 204060801001900192019401960198020002020Record: 98.3 mm (3.9 in) in 1909
The wettest day of the year at Red Bluff Muni AP, 1892 to 2026. The record is 98.3 mm (3.9 in) in 1909, marked on the chart; the median year is 48.3 mm (1.9 in).
Wettest day (Rx1day) at Red Bluff Muni AP by year
YearWettest day (Rx1day)
189245.5 mm (1.8 in)
189341.4 mm (1.6 in)
189450.8 mm (2.0 in)
189559.9 mm (2.4 in)
189652.3 mm (2.1 in)
189727.4 mm (1.1 in)
189838.1 mm (1.5 in)
189964.3 mm (2.5 in)
190044.7 mm (1.8 in)
190162.5 mm (2.5 in)
190260.7 mm (2.4 in)
190372.1 mm (2.8 in)
190491.9 mm (3.6 in)
190543.7 mm (1.7 in)
190661.0 mm (2.4 in)
190746.7 mm (1.8 in)
190853.3 mm (2.1 in)
190998.3 mm (3.9 in)
191041.7 mm (1.6 in)
191154.4 mm (2.1 in)
191283.6 mm (3.3 in)
191355.9 mm (2.2 in)
191458.2 mm (2.3 in)
191560.2 mm (2.4 in)
191654.4 mm (2.1 in)
191750.8 mm (2.0 in)
191844.7 mm (1.8 in)
191933.0 mm (1.3 in)
192030.7 mm (1.2 in)
192148.8 mm (1.9 in)
192251.8 mm (2.0 in)
192332.5 mm (1.3 in)
192436.3 mm (1.4 in)
192574.7 mm (2.9 in)
192653.6 mm (2.1 in)
192784.6 mm (3.3 in)
192834.8 mm (1.4 in)
192924.9 mm (1.0 in)
193036.6 mm (1.4 in)
193159.7 mm (2.4 in)
193239.6 mm (1.6 in)
193363.5 mm (2.5 in)
193433.0 mm (1.3 in)
193547.2 mm (1.9 in)
193635.6 mm (1.4 in)
193769.1 mm (2.7 in)
193832.5 mm (1.3 in)
193933.3 mm (1.3 in)
194055.9 mm (2.2 in)
194152.8 mm (2.1 in)
194257.7 mm (2.3 in)
194363.5 mm (2.5 in)
194441.7 mm (1.6 in)
194541.9 mm (1.6 in)
194643.2 mm (1.7 in)
194745.0 mm (1.8 in)
194836.8 mm (1.4 in)
194935.1 mm (1.4 in)
195048.3 mm (1.9 in)
195149.3 mm (1.9 in)
195254.6 mm (2.1 in)
195341.9 mm (1.6 in)
195455.6 mm (2.2 in)
195552.6 mm (2.1 in)
195641.7 mm (1.6 in)
195759.4 mm (2.3 in)
195854.4 mm (2.1 in)
195976.7 mm (3.0 in)
196085.6 mm (3.4 in)
196174.4 mm (2.9 in)
196248.3 mm (1.9 in)
196333.0 mm (1.3 in)
196447.0 mm (1.9 in)
196539.6 mm (1.6 in)
196665.0 mm (2.6 in)
196745.0 mm (1.8 in)
196835.1 mm (1.4 in)
196943.2 mm (1.7 in)
197045.7 mm (1.8 in)
197134.3 mm (1.4 in)
197243.9 mm (1.7 in)
197352.1 mm (2.1 in)
197449.8 mm (2.0 in)
197530.2 mm (1.2 in)
197630.7 mm (1.2 in)
197756.4 mm (2.2 in)
197878.2 mm (3.1 in)
197951.3 mm (2.0 in)
198043.7 mm (1.7 in)
198146.7 mm (1.8 in)
198231.8 mm (1.3 in)
198359.2 mm (2.3 in)
198423.4 mm (0.9 in)
198544.2 mm (1.7 in)
198659.7 mm (2.4 in)
198846.5 mm (1.8 in)
198986.6 mm (3.4 in)
199030.7 mm (1.2 in)
199144.7 mm (1.8 in)
199252.3 mm (2.1 in)
199348.3 mm (1.9 in)
199448.3 mm (1.9 in)
199590.2 mm (3.6 in)
199635.8 mm (1.4 in)
199745.0 mm (1.8 in)
199872.1 mm (2.8 in)
199936.6 mm (1.4 in)
200037.8 mm (1.5 in)
200141.7 mm (1.6 in)
200253.8 mm (2.1 in)
200347.0 mm (1.9 in)
200472.4 mm (2.9 in)
200570.4 mm (2.8 in)
200646.0 mm (1.8 in)
200733.3 mm (1.3 in)
200854.4 mm (2.1 in)
200951.8 mm (2.0 in)
201037.3 mm (1.5 in)
201126.7 mm (1.1 in)
201247.0 mm (1.9 in)
201321.3 mm (0.8 in)
201473.2 mm (2.9 in)
201533.3 mm (1.3 in)
201639.4 mm (1.6 in)
201759.4 mm (2.3 in)
201858.9 mm (2.3 in)
201948.3 mm (1.9 in)
202020.8 mm (0.8 in)
202154.6 mm (2.1 in)
202230.0 mm (1.2 in)
202352.1 mm (2.1 in)
202464.5 mm (2.5 in)
202552.8 mm (2.1 in)
202629.7 mm (1.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Red Bluff Muni AP by year The wettest five days of the year at Red Bluff Muni AP, 1892 to 2026. The record is 237.0 mm (9.3 in) in 1995, marked on the chart; the median year is 90.4 mm (3.6 in). 01002003001900192019401960198020002020Record: 237.0 mm (9.3 in) in 1995
The wettest five days of the year at Red Bluff Muni AP, 1892 to 2026. The record is 237.0 mm (9.3 in) in 1995, marked on the chart; the median year is 90.4 mm (3.6 in).
Wettest five days (Rx5day) at Red Bluff Muni AP by year
YearWettest five days (Rx5day)
1892164.4 mm (6.5 in)
189372.2 mm (2.8 in)
1894127.5 mm (5.0 in)
189585.5 mm (3.4 in)
189684.6 mm (3.3 in)
189750.7 mm (2.0 in)
189861.8 mm (2.4 in)
189983.1 mm (3.3 in)
1900101.6 mm (4.0 in)
190174.5 mm (2.9 in)
1902141.3 mm (5.6 in)
1903145.0 mm (5.7 in)
1904133.6 mm (5.3 in)
190596.9 mm (3.8 in)
1906141.9 mm (5.6 in)
190756.8 mm (2.2 in)
1908106.5 mm (4.2 in)
1909148.6 mm (5.9 in)
191073.2 mm (2.9 in)
1911128.6 mm (5.1 in)
1912104.7 mm (4.1 in)
1913131.6 mm (5.2 in)
1914133.9 mm (5.3 in)
1915128.0 mm (5.0 in)
191675.7 mm (3.0 in)
191790.5 mm (3.6 in)
191852.3 mm (2.1 in)
191973.2 mm (2.9 in)
192072.6 mm (2.9 in)
1921109.2 mm (4.3 in)
192289.9 mm (3.5 in)
192379.5 mm (3.1 in)
192463.5 mm (2.5 in)
1925137.7 mm (5.4 in)
1926151.7 mm (6.0 in)
1927107.9 mm (4.2 in)
192888.7 mm (3.5 in)
192962.2 mm (2.4 in)
193078.7 mm (3.1 in)
1931112.6 mm (4.4 in)
193267.1 mm (2.6 in)
1933112.0 mm (4.4 in)
1934130.5 mm (5.1 in)
1935108.2 mm (4.3 in)
193674.5 mm (2.9 in)
1937117.8 mm (4.6 in)
193872.0 mm (2.8 in)
193943.9 mm (1.7 in)
1940141.5 mm (5.6 in)
1941123.8 mm (4.9 in)
1942103.7 mm (4.1 in)
1943131.0 mm (5.2 in)
194499.9 mm (3.9 in)
1945105.2 mm (4.1 in)
194676.3 mm (3.0 in)
194760.7 mm (2.4 in)
194867.2 mm (2.6 in)
194992.3 mm (3.6 in)
195092.8 mm (3.7 in)
195168.1 mm (2.7 in)
195282.4 mm (3.2 in)
195387.2 mm (3.4 in)
1954126.7 mm (5.0 in)
195579.6 mm (3.1 in)
195693.7 mm (3.7 in)
195789.6 mm (3.5 in)
195888.9 mm (3.5 in)
1959110.3 mm (4.3 in)
1960112.5 mm (4.4 in)
1961102.6 mm (4.0 in)
196291.3 mm (3.6 in)
196392.7 mm (3.6 in)
196480.2 mm (3.2 in)
196595.8 mm (3.8 in)
196688.7 mm (3.5 in)
1967110.5 mm (4.4 in)
196878.9 mm (3.1 in)
196985.6 mm (3.4 in)
1970125.0 mm (4.9 in)
197164.3 mm (2.5 in)
197279.2 mm (3.1 in)
197395.1 mm (3.7 in)
197484.1 mm (3.3 in)
197559.5 mm (2.3 in)
197644.2 mm (1.7 in)
197778.9 mm (3.1 in)
1978114.3 mm (4.5 in)
1979107.6 mm (4.2 in)
1980136.2 mm (5.4 in)
198193.9 mm (3.7 in)
198259.6 mm (2.3 in)
1983144.3 mm (5.7 in)
198457.0 mm (2.2 in)
1985104.1 mm (4.1 in)
1986156.2 mm (6.1 in)
198874.1 mm (2.9 in)
1989129.8 mm (5.1 in)
199073.3 mm (2.9 in)
199170.6 mm (2.8 in)
1992126.0 mm (5.0 in)
199381.6 mm (3.2 in)
199478.3 mm (3.1 in)
1995237.0 mm (9.3 in)
199677.3 mm (3.0 in)
199793.2 mm (3.7 in)
1998134.0 mm (5.3 in)
199956.0 mm (2.2 in)
200086.5 mm (3.4 in)
200167.5 mm (2.7 in)
2002122.0 mm (4.8 in)
200385.1 mm (3.4 in)
2004149.0 mm (5.9 in)
200592.9 mm (3.7 in)
200674.5 mm (2.9 in)
200794.0 mm (3.7 in)
200895.0 mm (3.7 in)
2009146.4 mm (5.8 in)
201094.7 mm (3.7 in)
201160.9 mm (2.4 in)
2012108.3 mm (4.3 in)
201329.7 mm (1.2 in)
201499.1 mm (3.9 in)
201544.2 mm (1.7 in)
201678.6 mm (3.1 in)
201782.3 mm (3.2 in)
201887.4 mm (3.4 in)
201989.2 mm (3.5 in)
202035.8 mm (1.4 in)
202190.2 mm (3.6 in)
202276.5 mm (3.0 in)
202388.7 mm (3.5 in)
2024139.2 mm (5.5 in)
202596.7 mm (3.8 in)
202674.4 mm (2.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Red Bluff Muni AP by year The longest dry spell of the year at Red Bluff Muni AP, 1892 to 2026. The record is 168 days in 2002, marked on the chart; the median year is 96 days. 0501001502001900192019401960198020002020Record: 168 days in 2002
The longest dry spell of the year at Red Bluff Muni AP, 1892 to 2026. The record is 168 days in 2002, marked on the chart; the median year is 96 days.
Longest dry spell (CDD) at Red Bluff Muni AP by year
YearLongest dry spell (CDD)
1892100 days
1893113 days
189444 days
189531 days
189632 days
1897100 days
189881 days
1899109 days
190046 days
1901118 days
190216 days
1903130 days
190454 days
1905121 days
190673 days
1907123 days
1908147 days
1909100 days
191090 days
191189 days
191248 days
1913127 days
1914105 days
1915150 days
191690 days
1917119 days
191864 days
1919140 days
192070 days
1921119 days
192285 days
192389 days
1924136 days
192565 days
192693 days
1927121 days
1928113 days
1929111 days
1930103 days
193193 days
1932155 days
193388 days
1934115 days
1935107 days
193655 days
193768 days
1938148 days
1939110 days
194064 days
194168 days
194298 days
1943119 days
1944127 days
194587 days
194660 days
1947121 days
194848 days
1949160 days
195051 days
195175 days
195278 days
195382 days
195455 days
195572 days
195690 days
1957122 days
195850 days
1959122 days
1960132 days
196196 days
196255 days
1963103 days
196475 days
1965114 days
1966134 days
1967121 days
196873 days
1969101 days
1970111 days
197194 days
197293 days
1973120 days
1974109 days
197560 days
1976123 days
197799 days
197866 days
1979116 days
198082 days
1981122 days
198274 days
198371 days
198480 days
198560 days
1986111 days
1988147 days
198967 days
199068 days
199193 days
1992112 days
199374 days
1994119 days
1995105 days
199674 days
199776 days
1998133 days
199977 days
200057 days
200188 days
2002168 days
200376 days
2004113 days
2005119 days
2006112 days
200762 days
2008129 days
200985 days
201096 days
201188 days
2012139 days
201387 days
201477 days
2015117 days
2016105 days
201790 days
2018107 days
2019109 days
2020153 days
202192 days
202292 days
202385 days
2024111 days
2025105 days
202696 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

77 years with a frost

Across 77 years with a frost, the median last spring frost at Red Bluff Muni AP falls on 1 March and the median first autumn frost on 27 November, which leaves a median of 277 days between them.

In 1991 to 2024 the median growing season was 285 days. That is 22 days more than in 1935 to 1967.

Fitted over all years, the growing season changes by +3.1 days per decade at this station.

Frost dates and growing season at Red Bluff Muni AP
MeasureMedian, all yearsEarliest period (1935 to 1967)Recent period (1991 to 2024)Recent against earliestFitted trend
Last spring frost1 March10 March27 February11 days earlier-2.3 days per decade
First autumn frost27 November26 November28 November2 days later+0.8 days per decade
Growing days277 days263 days285 days22 days more+3.1 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

125 years, 1892 to 2025

A day with at least 47.7 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 97.3 mm (3.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Red Bluff Muni AP: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years47.7 mm (1.9 in)
5 years61.8 mm (2.4 in)
10 years70.8 mm (2.8 in)
25 years81.8 mm (3.2 in)
50 years89.7 mm (3.5 in)
100 years97.3 mm (3.8 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 125 years of values from 1892 to 2025.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 98.3 mm (3.9 in) in 1909; 91.9 mm (3.6 in) in 1904; 90.2 mm (3.6 in) in 1995.

Station Changes

3 suspected

3 changes were suspected in the annual mean temperature of Red Bluff Muni AP, at 1946, 1976 and 1992. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1946 ran 0.4 C (0.7 F) higher than in the years before (likely change).
  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1976 ran 0.4 C (0.7 F) higher than in the years before (likely change).
  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1992 ran 0.6 C (1.1 F) lower than in the years before (possible change).
Suspected changes in the annual mean temperature at Red Bluff Muni AP, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
1946+0.4+0.7likely5
1976+0.4+0.7likely5
1992-0.6-1.1possible5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Climate Twins

2010 to 2024 against 1961 to 1990

Over 2010 to 2024, Red Bluff Muni AP had a mean temperature of 18.0 C (64.4 F) and 510.5 mm (20.1 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Childs (United States, 1,134 km away), Three Rivers Edison Ph 1 (United States, 506 km away) and Tumacacori Nm (United States, 1,387 km away).

Climate twins of Red Bluff Muni AP: stations whose 1961 to 1990 climate is closest to its 2010 to 2024 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
ChildsUnited States1,134 km (705 mi)18.0 C (64.4 F)486.4 mm (19.1 in)0.74
Three Rivers Edison Ph 1United States506 km (314 mi)17.4 C (63.4 F)613.6 mm (24.2 in)0.78
Tumacacori NmUnited States1,387 km (862 mi)17.9 C (64.2 F)407.6 mm (16.0 in)0.80

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

  • Data for Red Bluff Muni AP standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Red Bluff Muni AP threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-15).