Built 2026-10-16 (16 October 2026)

Downieville Weather Records (USC00042500)

Record envelope, standing records and threshold days for Downieville (USC00042500), California, United States, with 119 years of record.

Key Facts for Downieville

  • Downieville (USC00042500) is a weather station in California, United States at 39.56 latitude and -120.82 longitude, 889 m (2,915 ft) above sea level.
  • The station reports from 1908 to 2026, 119 years of record.
  • 1,464 records set at Downieville still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Downieville set a daily record precipitation of 42.4 mm (1.7 in) on 4 September 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, 39.56 latitude, -120.82 longitude.
  • Elevation: 889 m (2,915 ft).
  • Period of record: 1908 to 2026, 119 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 Downieville, with 2026 drawn through them The band shows the record high and record low for each calendar day at Downieville. 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 Downieville. 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 Downieville, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan21.7 C (71.1 F)-17.2 C (1.0 F)20.6 C (69.1 F)-5.0 C (23.0 F)
Feb25.6 C (78.1 F)-16.7 C (1.9 F)22.2 C (72.0 F)-3.3 C (26.1 F)
Mar31.7 C (89.1 F)-12.2 C (10.0 F)31.7 C (89.1 F)-2.2 C (28.0 F)
Apr35.6 C (96.1 F)-10.0 C (14.0 F)26.7 C (80.1 F)-0.6 C (30.9 F)
May37.2 C (99.0 F)-3.3 C (26.1 F)31.7 C (89.1 F)1.1 C (34.0 F)
Jun41.7 C (107.1 F)-2.2 C (28.0 F)36.7 C (98.1 F)6.1 C (43.0 F)
Jul41.1 C (106.0 F)1.7 C (35.1 F)35.0 C (95.0 F)7.2 C (45.0 F)
Aug42.8 C (109.0 F)1.1 C (34.0 F)38.9 C (102.0 F)7.2 C (45.0 F)
Sep40.6 C (105.1 F)-3.9 C (25.0 F)n/an/a
Oct36.1 C (97.0 F)-7.2 C (19.0 F)n/an/a
Nov28.9 C (84.0 F)-8.3 C (17.1 F)n/an/a
Dec23.3 C (73.9 F)-17.2 C (1.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Downieville by the year they were set 1,464 records at Downieville still stand. 1929 holds the most, with 62. 0204060801911: 101912: 111913: 241914: 121915: 181916: 291917: 281918: 251919: 291920: 261921: 161922: 171923: 101924: 311925: 201926: 221927: 271928: 231929: 621930: 71946: 171947: 101948: 141949: 241950: 251951: 111952: 101953: 101954: 161955: 221956: 141957: 91958: 51959: 61960: 91961: 151962: 151963: 121964: 101965: 81966: 121967: 101968: 71969: 31970: 111971: 141972: 261973: 81974: 121975: 181976: 151977: 121978: 31981: 181982: 91983: 181984: 171985: 131986: 151987: 211988: 271989: 221990: 171991: 171992: 111993: 91994: 21995: 201996: 181997: 141998: 151999: 142000: 122001: 162002: 92003: 232004: 82005: 32006: 102007: 72008: 102009: 132010: 112011: 122012: 42014: 132015: 182016: 82017: 162018: 72019: 82020: 112021: 132022: 162023: 172024: 142025: 112026: 171911192119461956196619761988199820082019
1,464 records at Downieville still stand. 1929 holds the most, with 62.
Standing records at Downieville by the year they were set
Year setStanding records
191110
191211
191324
191412
191518
191629
191728
191825
191929
192026
192116
192217
192310
192431
192520
192622
192727
192823
192962
19307
194617
194710
194814
194924
195025
195111
195210
195310
195416
195522
195614
19579
19585
19596
19609
196115
196215
196312
196410
19658
196612
196710
19687
19693
197011
197114
197226
19738
197412
197518
197615
197712
19783
198118
19829
198318
198417
198513
198615
198721
198827
198922
199017
199117
199211
19939
19942
199520
199618
199714
199815
199914
200012
200116
20029
200323
20048
20053
200610
20077
200810
200913
201011
201112
20124
201413
201518
20168
201716
20187
20198
202011
202113
202216
202317
202414
202511
202617

All-Time Record Progression

7 new records
When Downieville set new all-time records 7 all-time records were set at Downieville between 23 July 1959 and 12 August 1992. Each dot is a new record. Record high minimum temperatureRecord low maximum temperatureRecord daily precipitationRecord high maximum temperatureRecord daily snowfall23 July 1959: Record high minimum temperature 18.3 C (64.9 F)22 January 1962: Record low maximum temperature -3.9 C (25.0 F)12 October 1962: Record daily precipitation 216.4 mm (8.5 in)1 February 1963: Record daily precipitation 235.7 mm (9.3 in)7 August 1981: Record high maximum temperature 42.8 C (109.0 F)16 February 1990: Record daily snowfall 76.2 cm (30.0 in)12 August 1992: Record high minimum temperature 20.0 C (68.0 F)1960196519701975198019851990
7 all-time records were set at Downieville between 23 July 1959 and 12 August 1992. Each dot is a new record.
When Downieville set new all-time records
DateKindDetail
1959-07-23Record high minimum temperatureRecord high minimum temperature 18.3 C (64.9 F)
1962-01-22Record low maximum temperatureRecord low maximum temperature -3.9 C (25.0 F)
1962-10-12Record daily precipitationRecord daily precipitation 216.4 mm (8.5 in)
1963-02-01Record daily precipitationRecord daily precipitation 235.7 mm (9.3 in)
1981-08-07Record high maximum temperatureRecord high maximum temperature 42.8 C (109.0 F)
1990-02-16Record daily snowfallRecord daily snowfall 76.2 cm (30.0 in)
1992-08-12Record high minimum temperatureRecord high minimum temperature 20.0 C (68.0 F)

Wettest Day of Each Month

Feb: 235.7 mm (9.3 in)
Record daily precipitation for each month at Downieville The wettest day on record for each calendar month at Downieville. The most was 235.7 mm (9.3 in) on 1 February 1963. 0100200300 Jan: 176.5 mm (6.9 in), 3 January 1916 Jan Feb: 235.7 mm (9.3 in), 1 February 1963 Feb Mar: 148.3 mm (5.8 in), 30 March 1940 Mar Apr: 101.6 mm (4.0 in), 1 April 1927 Apr May: 102.1 mm (4.0 in), 19 May 1957 May Jun: 52.6 mm (2.1 in), 28 June 1991 Jun Jul: 55.9 mm (2.2 in), 9 July 1974 Jul Aug: 39.1 mm (1.5 in), 15 August 1976 Aug Sep: 79.2 mm (3.1 in), 19 September 1959 Sep Oct: 216.4 mm (8.5 in), 12 October 1962 Oct Nov: 146.8 mm (5.8 in), 15 November 2017 Nov Dec: 191.3 mm (7.5 in), 22 December 1964 Dec
The wettest day on record for each calendar month at Downieville. The most was 235.7 mm (9.3 in) on 1 February 1963.
Record daily precipitation for each month at Downieville
MonthRecord daily precipitation (mm)Date
Jan176.5 mm (6.9 in)3 January 1916
Feb235.7 mm (9.3 in)1 February 1963
Mar148.3 mm (5.8 in)30 March 1940
Apr101.6 mm (4.0 in)1 April 1927
May102.1 mm (4.0 in)19 May 1957
Jun52.6 mm (2.1 in)28 June 1991
Jul55.9 mm (2.2 in)9 July 1974
Aug39.1 mm (1.5 in)15 August 1976
Sep79.2 mm (3.1 in)19 September 1959
Oct216.4 mm (8.5 in)12 October 1962
Nov146.8 mm (5.8 in)15 November 2017
Dec191.3 mm (7.5 in)22 December 1964

Period of Record Coverage

1911 to 2026
Days with data per year at Downieville 99 years of record at Downieville, 1911 to 2026. 22 years have data for under 90 percent of days and are left out of rankings: 1911, 1930, 1946, 1951, 1952, 1965, 1966, 1967 and others. 1911: 210 of 365 days1912: 366 of 366 days1913: 364 of 365 days1914: 363 of 365 days1915: 364 of 365 days1916: 366 of 366 days1917: 365 of 365 days1918: 365 of 365 days1919: 365 of 365 days1920: 366 of 366 days1921: 365 of 365 days1922: 365 of 365 days1923: 365 of 365 days1924: 366 of 366 days1925: 365 of 365 days1926: 365 of 365 days1927: 364 of 365 days1928: 366 of 366 days1929: 365 of 365 days1930: 135 of 365 days1946: 259 of 365 days1947: 360 of 365 days1948: 362 of 366 days1949: 353 of 365 days1950: 344 of 365 days1951: 312 of 365 days1952: 328 of 366 days1953: 343 of 365 days1954: 365 of 365 days1955: 359 of 365 days1956: 363 of 366 days1957: 362 of 365 days1958: 354 of 365 days1959: 347 of 365 days1960: 359 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 352 of 366 days1965: 304 of 365 days1966: 304 of 365 days1967: 308 of 365 days1968: 308 of 366 days1969: 309 of 365 days1970: 315 of 365 days1971: 315 of 365 days1972: 358 of 366 days1973: 348 of 365 days1974: 330 of 365 days1975: 319 of 365 days1976: 286 of 366 days1977: 265 of 365 days1978: 208 of 365 days1979: 20 of 365 days1981: 229 of 365 days1982: 260 of 365 days1983: 242 of 365 days1984: 347 of 366 days1985: 352 of 365 days1986: 359 of 365 days1987: 364 of 365 days1988: 366 of 366 days1989: 364 of 365 days1990: 363 of 365 days1991: 363 of 365 days1992: 358 of 366 days1993: 362 of 365 days1994: 362 of 365 days1995: 362 of 365 days1996: 365 of 366 days1997: 363 of 365 days1998: 361 of 365 days1999: 362 of 365 days2000: 362 of 366 days2001: 360 of 365 days2002: 359 of 365 days2003: 361 of 365 days2004: 359 of 366 days2005: 363 of 365 days2006: 365 of 365 days2007: 363 of 365 days2008: 363 of 366 days2009: 361 of 365 days2010: 358 of 365 days2011: 364 of 365 days2012: 304 of 366 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 364 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 364 of 365 days2026: 243 of 365 days192019501965199520102025
99 years of record at Downieville, 1911 to 2026. 22 years have data for under 90 percent of days and are left out of rankings: 1911, 1930, 1946, 1951, 1952, 1965, 1966, 1967 and others.
Days with data per year at Downieville
YearDays with dataShare of yearComplete
191121058%No
1912366100%Yes
1913364100%Yes
191436399%Yes
1915364100%Yes
1916366100%Yes
1917365100%Yes
1918365100%Yes
1919365100%Yes
1920366100%Yes
1921365100%Yes
1922365100%Yes
1923365100%Yes
1924366100%Yes
1925365100%Yes
1926365100%Yes
1927364100%Yes
1928366100%Yes
1929365100%Yes
193013537%No
194625971%No
194736099%Yes
194836299%Yes
194935397%Yes
195034494%Yes
195131285%No
195232890%No
195334394%Yes
1954365100%Yes
195535998%Yes
195636399%Yes
195736299%Yes
195835497%Yes
195934795%Yes
196035998%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
196435296%Yes
196530483%No
196630483%No
196730884%No
196830884%No
196930985%No
197031586%No
197131586%No
197235898%Yes
197334895%Yes
197433090%Yes
197531987%No
197628678%No
197726573%No
197820857%No
1979205%No
198122963%No
198226071%No
198324266%No
198434795%Yes
198535296%Yes
198635998%Yes
1987364100%Yes
1988366100%Yes
1989364100%Yes
199036399%Yes
199136399%Yes
199235898%Yes
199336299%Yes
199436299%Yes
199536299%Yes
1996365100%Yes
199736399%Yes
199836199%Yes
199936299%Yes
200036299%Yes
200136099%Yes
200235998%Yes
200336199%Yes
200435998%Yes
200536399%Yes
2006365100%Yes
200736399%Yes
200836399%Yes
200936199%Yes
201035898%Yes
2011364100%Yes
201230483%No
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
2022364100%Yes
2023365100%Yes
2024366100%Yes
2025364100%Yes
202624367%No

Latest Records

20
Latest records at Downieville
DateStationRecordValueBeat old record byOld record stoodSignificance
4 September 2026Downieville, USdaily rain (Provisional)42.4 mm (1.7 in)29.2 mm (1.1 in)85 years58 of 100 (Notable)
26 August 2026Downieville, USdaily high min (Tie, Provisional)13.9 C (57.0 F)tie59 years6 of 100 (Routine)
19 July 2026Downieville, USdaily high min19.4 C (66.9 F)2.2 C (4.0 F)100 years47 of 100 (Notable)
18 July 2026Downieville, USall-time high min (Tie)20.0 C (68.0 F)tie33 years10 of 100 (Routine)
11 July 2026Downieville, USdaily high min15.6 C (60.1 F)0.6 C (1.1 F)0 years12 of 100 (Routine)
18 June 2026Downieville, USdaily high min16.7 C (62.1 F)1.7 C (3.1 F)8 years17 of 100 (Routine)
17 June 2026Downieville, USdaily high min15.0 C (59.0 F)0.6 C (1.1 F)40 years24 of 100 (Routine)
16 June 2026Downieville, USdaily high min (Tie)13.3 C (55.9 F)tie37 years5 of 100 (Routine)
15 June 2026Downieville, USdaily high min12.8 C (55.0 F)0.6 C (1.1 F)61 years30 of 100 (Routine)
13 June 2026Downieville, USdaily high min (Tie)12.8 C (55.0 F)tie108 years10 of 100 (Routine)
22 May 2026Downieville, USdaily rain21.3 mm (0.8 in)12.2 mm (0.5 in)11 years20 of 100 (Routine)
11 May 2026Downieville, USdaily high max (Tie)31.7 C (89.1 F)tie29 years4 of 100 (Routine)
9 May 2026Downieville, USdaily high max31.1 C (88.0 F)0.5 C (0.9 F)101 years40 of 100 (Notable)
2 May 2026Downieville, USdaily high min8.3 C (46.9 F)0.5 C (0.9 F)96 years39 of 100 (Notable)
11 April 2026Downieville, USdaily rain63.0 mm (2.5 in)23.1 mm (0.9 in)108 years53 of 100 (Notable)
30 March 2026Downieville, USdaily high min7.8 C (46.0 F)0.6 C (1.1 F)33 years22 of 100 (Routine)
27 March 2026Downieville, USdaily high max26.7 C (80.1 F)1.1 C (2.0 F)40 years23 of 100 (Routine)
20 March 2026Downieville, USmonthly high max31.7 C (89.1 F)1.1 C (2.0 F)0 years21 of 100 (Routine)
19 March 2026Downieville, USmonthly high max30.6 C (87.1 F)1.2 C (2.2 F)100 years51 of 100 (Notable)
18 March 2026Downieville, USmonthly high max (Tie)29.4 C (84.9 F)tie100 years12 of 100 (Routine)

Climate Trend

79 complete years, 1912 to 2025
Annual mean temperature at Downieville as warming stripes, 1912 to 2025 One stripe for each of 79 complete years at Downieville, 1912 to 2025. Blue stripes are years cooler than the station's own mean of 11.5 C (52.7 F); red stripes are warmer. The coolest year was 1955, at 9.8 C (49.6 F), and the warmest was 2015, at 13.0 C (55.5 F). The strongest colour marks a difference of 1.8 C (3.2 F). 1912: 10.7 C, -0.8 C from the station mean1913: 11.1 C, -0.3 C from the station mean1914: 11.9 C, +0.4 C from the station mean1915: 11.5 C, 0.0 C from the station mean1916: 10.6 C, -0.9 C from the station mean1917: 11.5 C, 0.0 C from the station mean1918: 11.8 C, +0.3 C from the station mean1919: 11.4 C, -0.1 C from the station mean1920: 10.9 C, -0.5 C from the station mean1921: 11.7 C, +0.2 C from the station mean1922: 10.9 C, -0.6 C from the station mean1923: 11.2 C, -0.3 C from the station mean1924: 11.6 C, +0.1 C from the station mean1925: 11.4 C, -0.1 C from the station mean1926: 12.1 C, +0.6 C from the station mean1927: 10.4 C, -1.1 C from the station mean1928: 11.0 C, -0.4 C from the station mean1929: 10.9 C, -0.5 C from the station mean1947: 11.1 C, -0.4 C from the station mean1948: 9.9 C, -1.6 C from the station mean1949: 10.0 C, -1.4 C from the station mean1950: 11.0 C, -0.5 C from the station mean1951: 10.7 C, -0.8 C from the station mean1952: 10.3 C, -1.2 C from the station mean1953: 10.7 C, -0.8 C from the station mean1954: 10.7 C, -0.8 C from the station mean1955: 9.8 C, -1.7 C from the station mean1956: 10.3 C, -1.2 C from the station mean1957: 10.1 C, -1.4 C from the station mean1958: 11.4 C, -0.1 C from the station mean1959: 11.6 C, +0.1 C from the station mean1960: 11.0 C, -0.5 C from the station mean1961: 11.0 C, -0.5 C from the station mean1962: 10.9 C, -0.6 C from the station mean1963: 10.6 C, -0.9 C from the station mean1964: 10.6 C, -0.9 C from the station mean1966: 11.3 C, -0.2 C from the station mean1972: 10.4 C, -1.1 C from the station mean1973: 11.0 C, -0.5 C from the station mean1984: 12.2 C, +0.7 C from the station mean1985: 11.8 C, +0.3 C from the station mean1986: 12.4 C, +0.9 C from the station mean1987: 12.3 C, +0.8 C from the station mean1988: 12.5 C, +1.0 C from the station mean1989: 11.4 C, -0.1 C from the station mean1990: 11.3 C, -0.2 C from the station mean1991: 11.7 C, +0.2 C from the station mean1992: 12.4 C, +0.9 C from the station mean1993: 11.2 C, -0.3 C from the station mean1994: 11.6 C, +0.1 C from the station mean1995: 12.1 C, +0.6 C from the station mean1996: 12.4 C, +0.9 C from the station mean1997: 12.4 C, +0.9 C from the station mean1998: 10.9 C, -0.6 C from the station mean1999: 12.0 C, +0.5 C from the station mean2000: 12.1 C, +0.6 C from the station mean2001: 12.7 C, +1.2 C from the station mean2002: 12.3 C, +0.8 C from the station mean2003: 12.5 C, +1.0 C from the station mean2004: 12.2 C, +0.7 C from the station mean2005: 11.9 C, +0.4 C from the station mean2006: 11.8 C, +0.3 C from the station mean2007: 12.0 C, +0.5 C from the station mean2008: 11.6 C, +0.1 C from the station mean2009: 11.9 C, +0.4 C from the station mean2010: 11.2 C, -0.2 C from the station mean2011: 10.7 C, -0.8 C from the station mean2014: 13.0 C, +1.5 C from the station mean2015: 13.0 C, +1.6 C from the station mean2016: 12.1 C, +0.6 C from the station mean2017: 12.3 C, +0.8 C from the station mean2018: 12.4 C, +0.9 C from the station mean2019: 11.4 C, -0.1 C from the station mean2020: 12.5 C, +1.1 C from the station mean2021: 12.4 C, +0.9 C from the station mean2022: 12.0 C, +0.5 C from the station mean2023: 11.2 C, -0.3 C from the station mean2024: 12.3 C, +0.8 C from the station mean2025: 12.6 C, +1.2 C from the station mean191219201930194019501960197019801990200020102020
One stripe for each of 79 complete years at Downieville, 1912 to 2025. Blue stripes are years cooler than the station's own mean of 11.5 C (52.7 F); red stripes are warmer. The coolest year was 1955, at 9.8 C (49.6 F), and the warmest was 2015, at 13.0 C (55.5 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Downieville as warming stripes, 1912 to 2025
YearAnnual mean temperatureDifference from the station mean
191210.7 C-0.82 C
191311.1 C-0.35 C
191411.9 C+0.36 C
191511.5 C+0.04 C
191610.6 C-0.86 C
191711.5 C+0.02 C
191811.8 C+0.33 C
191911.4 C-0.13 C
192010.9 C-0.55 C
192111.7 C+0.22 C
192210.9 C-0.56 C
192311.2 C-0.33 C
192411.6 C+0.09 C
192511.4 C-0.08 C
192612.1 C+0.56 C
192710.4 C-1.06 C
192811.0 C-0.45 C
192910.9 C-0.55 C
194711.1 C-0.40 C
19489.9 C-1.60 C
194910.0 C-1.45 C
195011.0 C-0.54 C
195110.7 C-0.76 C
195210.3 C-1.24 C
195310.7 C-0.78 C
195410.7 C-0.80 C
19559.8 C-1.74 C
195610.3 C-1.20 C
195710.1 C-1.36 C
195811.4 C-0.06 C
195911.6 C+0.14 C
196011.0 C-0.53 C
196111.0 C-0.48 C
196210.9 C-0.62 C
196310.6 C-0.87 C
196410.6 C-0.89 C
196611.3 C-0.21 C
197210.4 C-1.06 C
197311.0 C-0.53 C
198412.2 C+0.67 C
198511.8 C+0.27 C
198612.4 C+0.86 C
198712.3 C+0.84 C
198812.5 C+0.96 C
198911.4 C-0.13 C
199011.3 C-0.16 C
199111.7 C+0.23 C
199212.4 C+0.86 C
199311.2 C-0.29 C
199411.6 C+0.14 C
199512.1 C+0.62 C
199612.4 C+0.90 C
199712.4 C+0.94 C
199810.9 C-0.56 C
199912.0 C+0.51 C
200012.1 C+0.57 C
200112.7 C+1.16 C
200212.3 C+0.76 C
200312.5 C+1.02 C
200412.2 C+0.70 C
200511.9 C+0.37 C
200611.8 C+0.31 C
200712.0 C+0.53 C
200811.6 C+0.12 C
200911.9 C+0.38 C
201011.2 C-0.25 C
201110.7 C-0.76 C
201413.0 C+1.47 C
201513.0 C+1.55 C
201612.1 C+0.64 C
201712.3 C+0.79 C
201812.4 C+0.87 C
201911.4 C-0.12 C
202012.5 C+1.05 C
202112.4 C+0.86 C
202212.0 C+0.47 C
202311.2 C-0.26 C
202412.3 C+0.83 C
202512.6 C+1.15 C

The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1912 to 2025. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 79 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Downieville
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 decade1912 to 202579Rise
Mean daily maximum0.01 C (-0.05 to 0.08) per decade0.03 F (-0.09 to 0.14) per decade1912 to 202579Not clearly different from zero
Mean daily minimum0.2 C (0.2 to 0.3) per decade0.4 F (0.3 to 0.5) per decade1912 to 202579Rise

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

1908 to 2026
Yearly extremes at Downieville: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)42.8 C (109.0 F)198138.3 C (100.9 F)99
Coldest night (TNn)-17.2 C (1.0 F)1913-9.4 C (15.1 F)99
Wettest day (Rx1day)235.7 mm (9.3 in)1963102.9 mm (4.1 in)111
Wettest five days (Rx5day)603.8 mm (23.8 in)1962230.9 mm (9.1 in)111
Longest dry spell (CDD)169 days200271 days111

Hottest day (TXx)

Hottest day (TXx) at Downieville by year The hottest day of the year at Downieville, 1908 to 2026. The record is 42.8 C (109.0 F) in 1981, marked on the chart; the median year is 38.3 C (100.9 F). 1020304050192019401960198020002020Record: 42.8 C (109.0 F) in 1981
The hottest day of the year at Downieville, 1908 to 2026. The record is 42.8 C (109.0 F) in 1981, marked on the chart; the median year is 38.3 C (100.9 F).
Hottest day (TXx) at Downieville by year
YearHottest day (TXx)
1908n/a
1909n/a
1910n/a
191139.4 C (102.9 F)
191237.8 C (100.0 F)
191338.9 C (102.0 F)
191439.4 C (102.9 F)
191540.0 C (104.0 F)
191638.9 C (102.0 F)
191737.2 C (99.0 F)
191840.0 C (104.0 F)
191938.9 C (102.0 F)
192040.6 C (105.1 F)
192137.2 C (99.0 F)
192240.0 C (104.0 F)
192339.4 C (102.9 F)
192438.3 C (100.9 F)
192539.4 C (102.9 F)
192639.4 C (102.9 F)
192736.7 C (98.1 F)
192838.9 C (102.0 F)
192939.4 C (102.9 F)
193027.2 C (81.0 F)
1938n/a
1939n/a
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
194640.6 C (105.1 F)
194735.6 C (96.1 F)
194836.7 C (98.1 F)
194936.1 C (97.0 F)
195040.6 C (105.1 F)
195137.8 C (100.0 F)
195237.2 C (99.0 F)
195337.2 C (99.0 F)
195436.1 C (97.0 F)
195538.3 C (100.9 F)
195638.3 C (100.9 F)
195736.7 C (98.1 F)
195837.8 C (100.0 F)
195939.4 C (102.9 F)
196038.9 C (102.0 F)
196140.6 C (105.1 F)
196236.7 C (98.1 F)
196335.0 C (95.0 F)
196435.6 C (96.1 F)
196535.0 C (95.0 F)
196635.6 C (96.1 F)
196736.1 C (97.0 F)
196836.7 C (98.1 F)
196936.7 C (98.1 F)
197037.8 C (100.0 F)
197140.0 C (104.0 F)
197240.6 C (105.1 F)
197338.3 C (100.9 F)
197439.4 C (102.9 F)
197540.0 C (104.0 F)
197636.7 C (98.1 F)
197738.9 C (102.0 F)
197836.1 C (97.0 F)
197912.2 C (54.0 F)
198142.8 C (109.0 F)
198235.0 C (95.0 F)
198336.7 C (98.1 F)
198438.9 C (102.0 F)
198537.8 C (100.0 F)
198636.7 C (98.1 F)
198739.4 C (102.9 F)
198841.1 C (106.0 F)
198936.7 C (98.1 F)
199040.6 C (105.1 F)
199138.3 C (100.9 F)
199238.3 C (100.9 F)
199337.8 C (100.0 F)
199437.8 C (100.0 F)
199536.7 C (98.1 F)
199638.9 C (102.0 F)
199740.0 C (104.0 F)
199840.0 C (104.0 F)
199937.8 C (100.0 F)
200038.9 C (102.0 F)
200137.8 C (100.0 F)
200240.6 C (105.1 F)
200340.0 C (104.0 F)
200437.8 C (100.0 F)
200537.8 C (100.0 F)
200641.7 C (107.1 F)
200738.3 C (100.9 F)
200840.6 C (105.1 F)
200936.7 C (98.1 F)
201038.3 C (100.9 F)
201135.0 C (95.0 F)
201238.3 C (100.9 F)
2013n/a
201438.3 C (100.9 F)
201537.8 C (100.0 F)
201638.9 C (102.0 F)
201739.4 C (102.9 F)
201838.3 C (100.9 F)
201936.1 C (97.0 F)
202039.4 C (102.9 F)
202139.4 C (102.9 F)
202240.0 C (104.0 F)
202338.9 C (102.0 F)
202440.6 C (105.1 F)
202537.2 C (99.0 F)
202638.9 C (102.0 F)

Coldest night (TNn)

Coldest night (TNn) at Downieville by year The coldest night of the year at Downieville, 1908 to 2026. The record is -17.2 C (1.0 F) in 1913, marked on the chart; the median year is -9.4 C (15.1 F). -20-15-10-50192019401960198020002020Record: -17.2 C (1.0 F) in 1913
The coldest night of the year at Downieville, 1908 to 2026. The record is -17.2 C (1.0 F) in 1913, marked on the chart; the median year is -9.4 C (15.1 F).
Coldest night (TNn) at Downieville by year
YearColdest night (TNn)
1908n/a
1909n/a
1910n/a
1911-13.3 C (8.1 F)
1912-12.8 C (9.0 F)
1913-17.2 C (1.0 F)
1914-10.6 C (12.9 F)
1915-11.1 C (12.0 F)
1916-14.4 C (6.1 F)
1917-11.7 C (10.9 F)
1918-8.9 C (16.0 F)
1919-10.6 C (12.9 F)
1920-7.8 C (18.0 F)
1921-8.3 C (17.1 F)
1922-13.9 C (7.0 F)
1923-12.8 C (9.0 F)
1924-16.1 C (3.0 F)
1925-7.8 C (18.0 F)
1926-10.0 C (14.0 F)
1927-10.0 C (14.0 F)
1928-12.2 C (10.0 F)
1929-11.7 C (10.9 F)
1930-16.1 C (3.0 F)
1938n/a
1939n/a
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946-7.2 C (19.0 F)
1947-10.6 C (12.9 F)
1948-10.6 C (12.9 F)
1949-16.7 C (1.9 F)
1950-16.7 C (1.9 F)
1951-11.1 C (12.0 F)
1952-10.0 C (14.0 F)
1953-6.7 C (19.9 F)
1954-7.8 C (18.0 F)
1955-11.7 C (10.9 F)
1956-10.6 C (12.9 F)
1957-12.2 C (10.0 F)
1958-7.2 C (19.0 F)
1959-8.9 C (16.0 F)
1960-11.7 C (10.9 F)
1961-10.0 C (14.0 F)
1962-12.2 C (10.0 F)
1963-8.9 C (16.0 F)
1964-6.1 C (21.0 F)
1965-12.2 C (10.0 F)
1966-10.0 C (14.0 F)
1967-7.2 C (19.0 F)
1968-10.6 C (12.9 F)
1969-12.2 C (10.0 F)
1970-11.1 C (12.0 F)
1971-12.2 C (10.0 F)
1972-17.2 C (1.0 F)
1973-11.7 C (10.9 F)
1974-9.4 C (15.1 F)
1975-11.1 C (12.0 F)
1976-8.3 C (17.1 F)
1977-7.8 C (18.0 F)
1978-8.9 C (16.0 F)
1979-11.1 C (12.0 F)
1981-8.3 C (17.1 F)
1982-8.3 C (17.1 F)
1983-5.6 C (21.9 F)
1984-9.4 C (15.1 F)
1985-8.3 C (17.1 F)
1986-5.0 C (23.0 F)
1987-8.3 C (17.1 F)
1988-11.7 C (10.9 F)
1989-16.1 C (3.0 F)
1990-16.1 C (3.0 F)
1991-7.2 C (19.0 F)
1992-8.3 C (17.1 F)
1993-10.0 C (14.0 F)
1994-6.7 C (19.9 F)
1995-4.4 C (24.1 F)
1996-8.3 C (17.1 F)
1997-9.4 C (15.1 F)
1998-11.1 C (12.0 F)
1999-6.1 C (21.0 F)
2000-5.6 C (21.9 F)
2001-6.7 C (19.9 F)
2002-9.4 C (15.1 F)
2003-5.6 C (21.9 F)
2004-7.2 C (19.0 F)
2005-4.4 C (24.1 F)
2006-6.7 C (19.9 F)
2007-8.9 C (16.0 F)
2008-10.6 C (12.9 F)
2009-13.3 C (8.1 F)
2010-7.2 C (19.0 F)
2011-8.9 C (16.0 F)
2012-9.4 C (15.1 F)
2013n/a
2014-6.7 C (19.9 F)
2015-7.2 C (19.0 F)
2016-7.2 C (19.0 F)
2017-7.2 C (19.0 F)
2018-9.4 C (15.1 F)
2019-7.8 C (18.0 F)
2020-6.1 C (21.0 F)
2021-6.1 C (21.0 F)
2022-8.3 C (17.1 F)
2023-7.2 C (19.0 F)
2024-7.2 C (19.0 F)
2025-5.6 C (21.9 F)
2026-5.0 C (23.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Downieville by year The wettest day of the year at Downieville, 1908 to 2026. The record is 235.7 mm (9.3 in) in 1963, marked on the chart; the median year is 102.9 mm (4.1 in). 050100150200250192019401960198020002020Record: 235.7 mm (9.3 in) in 1963
The wettest day of the year at Downieville, 1908 to 2026. The record is 235.7 mm (9.3 in) in 1963, marked on the chart; the median year is 102.9 mm (4.1 in).
Wettest day (Rx1day) at Downieville by year
YearWettest day (Rx1day)
190849.5 mm (1.9 in)
1909135.6 mm (5.3 in)
191064.8 mm (2.6 in)
1911103.9 mm (4.1 in)
191278.7 mm (3.1 in)
1913189.7 mm (7.5 in)
191498.3 mm (3.9 in)
1915137.2 mm (5.4 in)
1916176.5 mm (6.9 in)
1917135.1 mm (5.3 in)
191877.0 mm (3.0 in)
1919105.4 mm (4.1 in)
192082.6 mm (3.3 in)
192191.4 mm (3.6 in)
1922115.1 mm (4.5 in)
192371.9 mm (2.8 in)
192481.8 mm (3.2 in)
192583.8 mm (3.3 in)
1926135.9 mm (5.4 in)
1927108.0 mm (4.3 in)
192896.5 mm (3.8 in)
1929154.7 mm (6.1 in)
193086.1 mm (3.4 in)
193837.1 mm (1.5 in)
193951.1 mm (2.0 in)
1940170.4 mm (6.7 in)
1941142.7 mm (5.6 in)
1942143.5 mm (5.6 in)
1943161.5 mm (6.4 in)
1944114.8 mm (4.5 in)
1945138.2 mm (5.4 in)
1946131.6 mm (5.2 in)
194788.9 mm (3.5 in)
194878.7 mm (3.1 in)
1949125.7 mm (4.9 in)
1950113.5 mm (4.5 in)
1951107.2 mm (4.2 in)
1952109.0 mm (4.3 in)
1953116.1 mm (4.6 in)
1954126.2 mm (5.0 in)
1955148.1 mm (5.8 in)
195672.4 mm (2.9 in)
1957102.1 mm (4.0 in)
1958135.1 mm (5.3 in)
195999.1 mm (3.9 in)
1960165.1 mm (6.5 in)
196192.5 mm (3.6 in)
1962216.4 mm (8.5 in)
1963235.7 mm (9.3 in)
1964191.3 mm (7.5 in)
1965101.1 mm (4.0 in)
196679.5 mm (3.1 in)
196789.2 mm (3.5 in)
196878.7 mm (3.1 in)
1969132.6 mm (5.2 in)
197085.9 mm (3.4 in)
1971104.6 mm (4.1 in)
197271.1 mm (2.8 in)
197396.5 mm (3.8 in)
1974100.3 mm (3.9 in)
197552.6 mm (2.1 in)
197639.1 mm (1.5 in)
197791.4 mm (3.6 in)
197891.4 mm (3.6 in)
197963.5 mm (2.5 in)
1981105.4 mm (4.1 in)
1982134.1 mm (5.3 in)
198395.5 mm (3.8 in)
198477.2 mm (3.0 in)
1985115.1 mm (4.5 in)
1986176.3 mm (6.9 in)
198794.7 mm (3.7 in)
1988135.4 mm (5.3 in)
198995.5 mm (3.8 in)
199062.2 mm (2.4 in)
1991147.6 mm (5.8 in)
199289.4 mm (3.5 in)
1993140.7 mm (5.5 in)
1994102.9 mm (4.1 in)
1995184.4 mm (7.3 in)
1996101.9 mm (4.0 in)
1997165.9 mm (6.5 in)
199886.6 mm (3.4 in)
1999113.0 mm (4.4 in)
2000103.1 mm (4.1 in)
200171.9 mm (2.8 in)
2002102.1 mm (4.0 in)
200390.9 mm (3.6 in)
200483.3 mm (3.3 in)
2005175.5 mm (6.9 in)
200689.9 mm (3.5 in)
200768.1 mm (2.7 in)
2008102.9 mm (4.1 in)
2009110.5 mm (4.4 in)
201097.3 mm (3.8 in)
201180.0 mm (3.1 in)
2012116.6 mm (4.6 in)
201341.4 mm (1.6 in)
201486.9 mm (3.4 in)
2015111.5 mm (4.4 in)
2016105.7 mm (4.2 in)
2017146.8 mm (5.8 in)
201889.9 mm (3.5 in)
2019143.0 mm (5.6 in)
202085.1 mm (3.4 in)
2021180.1 mm (7.1 in)
2022120.4 mm (4.7 in)
202388.1 mm (3.5 in)
2024132.6 mm (5.2 in)
2025111.8 mm (4.4 in)
202663.0 mm (2.5 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Downieville by year The wettest five days of the year at Downieville, 1908 to 2026. The record is 603.8 mm (23.8 in) in 1962, marked on the chart; the median year is 230.9 mm (9.1 in). 0200400600800192019401960198020002020Record: 603.8 mm (23.8 in) in 1962
The wettest five days of the year at Downieville, 1908 to 2026. The record is 603.8 mm (23.8 in) in 1962, marked on the chart; the median year is 230.9 mm (9.1 in).
Wettest five days (Rx5day) at Downieville by year
YearWettest five days (Rx5day)
1908106.4 mm (4.2 in)
1909379.0 mm (14.9 in)
1910177.5 mm (7.0 in)
1911331.0 mm (13.0 in)
1912128.3 mm (5.1 in)
1913268.2 mm (10.6 in)
1914381.2 mm (15.0 in)
1915271.3 mm (10.7 in)
1916235.8 mm (9.3 in)
1917369.0 mm (14.5 in)
1918161.8 mm (6.4 in)
1919302.5 mm (11.9 in)
1920205.1 mm (8.1 in)
1921249.4 mm (9.8 in)
1922242.9 mm (9.6 in)
1923149.7 mm (5.9 in)
1924135.6 mm (5.3 in)
1925197.5 mm (7.8 in)
1926321.3 mm (12.6 in)
1927273.8 mm (10.8 in)
1928371.0 mm (14.6 in)
1929464.8 mm (18.3 in)
1930173.5 mm (6.8 in)
193892.2 mm (3.6 in)
193977.0 mm (3.0 in)
1940408.9 mm (16.1 in)
1941234.3 mm (9.2 in)
1942293.4 mm (11.6 in)
1943418.2 mm (16.5 in)
1944200.6 mm (7.9 in)
1945326.3 mm (12.8 in)
1946317.1 mm (12.5 in)
1947161.3 mm (6.4 in)
1948146.6 mm (5.8 in)
1949195.1 mm (7.7 in)
1950377.2 mm (14.9 in)
1951266.0 mm (10.5 in)
1952323.7 mm (12.7 in)
1953213.1 mm (8.4 in)
1954199.7 mm (7.9 in)
1955559.1 mm (22.0 in)
1956215.1 mm (8.5 in)
1957252.7 mm (9.9 in)
1958288.3 mm (11.4 in)
1959238.0 mm (9.4 in)
1960270.7 mm (10.7 in)
1961193.0 mm (7.6 in)
1962603.8 mm (23.8 in)
1963473.1 mm (18.6 in)
1964230.9 mm (9.1 in)
1965232.4 mm (9.1 in)
1966150.7 mm (5.9 in)
1967166.9 mm (6.6 in)
1968169.0 mm (6.7 in)
1969125.8 mm (5.0 in)
1970242.0 mm (9.5 in)
1971188.4 mm (7.4 in)
1972158.0 mm (6.2 in)
1973213.4 mm (8.4 in)
1974177.7 mm (7.0 in)
1975128.0 mm (5.0 in)
197662.0 mm (2.4 in)
1977122.0 mm (4.8 in)
1978192.2 mm (7.6 in)
197976.2 mm (3.0 in)
1981252.8 mm (10.0 in)
1982273.3 mm (10.8 in)
1983277.8 mm (10.9 in)
1984170.7 mm (6.7 in)
1985151.2 mm (6.0 in)
1986555.7 mm (21.9 in)
1987195.3 mm (7.7 in)
1988256.1 mm (10.1 in)
1989228.3 mm (9.0 in)
1990143.5 mm (5.6 in)
1991398.2 mm (15.7 in)
1992204.4 mm (8.0 in)
1993207.7 mm (8.2 in)
1994192.3 mm (7.6 in)
1995421.5 mm (16.6 in)
1996325.7 mm (12.8 in)
1997475.8 mm (18.7 in)
1998229.4 mm (9.0 in)
1999264.6 mm (10.4 in)
2000239.8 mm (9.4 in)
2001185.0 mm (7.3 in)
2002348.6 mm (13.7 in)
2003151.1 mm (5.9 in)
2004189.5 mm (7.5 in)
2005337.6 mm (13.3 in)
2006310.7 mm (12.2 in)
2007209.9 mm (8.3 in)
2008210.1 mm (8.3 in)
2009208.6 mm (8.2 in)
2010226.1 mm (8.9 in)
2011178.6 mm (7.0 in)
2012337.0 mm (13.3 in)
201372.7 mm (2.9 in)
2014216.1 mm (8.5 in)
2015202.4 mm (8.0 in)
2016245.4 mm (9.7 in)
2017484.4 mm (19.1 in)
2018191.5 mm (7.5 in)
2019273.3 mm (10.8 in)
2020162.8 mm (6.4 in)
2021357.4 mm (14.1 in)
2022283.2 mm (11.1 in)
2023244.8 mm (9.6 in)
2024327.6 mm (12.9 in)
2025333.5 mm (13.1 in)
2026165.6 mm (6.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Downieville by year The longest dry spell of the year at Downieville, 1908 to 2026. The record is 169 days in 2002, marked on the chart; the median year is 71 days. 050100150200192019401960198020002020Record: 169 days in 2002
The longest dry spell of the year at Downieville, 1908 to 2026. The record is 169 days in 2002, marked on the chart; the median year is 71 days.
Longest dry spell (CDD) at Downieville by year
YearLongest dry spell (CDD)
190827 days
1909100 days
191091 days
1911109 days
191271 days
191333 days
191499 days
191592 days
191656 days
191768 days
1918125 days
1919115 days
192055 days
192193 days
1922109 days
192366 days
1924143 days
192544 days
192670 days
192776 days
192893 days
1929111 days
193028 days
193827 days
193931 days
194095 days
194136 days
194270 days
194399 days
194496 days
1945105 days
194659 days
194792 days
194848 days
194988 days
195062 days
1951139 days
195262 days
195379 days
195470 days
195593 days
195657 days
195799 days
195840 days
195964 days
196078 days
196165 days
196249 days
196381 days
196475 days
196553 days
1966103 days
196772 days
196870 days
196992 days
197067 days
197164 days
197285 days
197392 days
197464 days
197533 days
197664 days
197754 days
197848 days
197914 days
198192 days
198213 days
198347 days
198476 days
198548 days
1986128 days
198785 days
198898 days
198961 days
199039 days
199168 days
199292 days
199369 days
199497 days
1995122 days
199646 days
199750 days
199883 days
199967 days
200084 days
200189 days
2002169 days
200385 days
2004100 days
200599 days
2006112 days
200785 days
2008126 days
200967 days
201064 days
201131 days
20121 day
201332 days
201459 days
201544 days
201696 days
201785 days
2018107 days
201953 days
202080 days
202134 days
202246 days
202347 days
202489 days
202579 days
202668 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

79 years with a frost

Across 79 years with a frost, the median last spring frost at Downieville falls on 12 May and the median first autumn frost on 13 October, which leaves a median of 155 days between them.

In 1994 to 2025 the median growing season was 172 days. That is 39 days more than in 1912 to 1958.

Fitted over all years, the growing season changes by +4.7 days per decade at this station.

Frost dates and growing season at Downieville
MeasureMedian, all yearsEarliest period (1912 to 1958)Recent period (1994 to 2025)Recent against earliestFitted trend
Last spring frost12 May26 May30 April26 days earlier-2.3 days per decade
First autumn frost13 October4 October24 October20 days later+2.4 days per decade
Growing days155 days133 days172 days39 days more+4.7 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

95 years, 1909 to 2024

A day with at least 107.0 mm (4.2 in) of rain is expected about once in 2 years. A day with at least 236.6 mm (9.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Downieville: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years107.0 mm (4.2 in)
5 years140.2 mm (5.5 in)
10 years162.7 mm (6.4 in)
25 years191.9 mm (7.6 in)
50 years214.1 mm (8.4 in)
100 years236.6 mm (9.3 in)Longer than the 95 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 95 years of values from 1909 to 2024.

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: 235.7 mm (9.3 in) in 1963; 216.4 mm (8.5 in) in 1962; 191.3 mm (7.5 in) in 1964.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Downieville, at 2005. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 2005 ran 0.4 C (0.6 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Downieville, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
2005-0.4-0.6likely5

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.

Download the Data

  • Data for Downieville standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Downieville 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-14).