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Norris Weather Records (USC00406619)

Record envelope, standing records and threshold days for Norris (USC00406619), Tennessee, United States, with 92 years of record.

Key Facts for Norris

  • Norris (USC00406619) is a weather station in Tennessee, United States at 36.21 latitude and -84.06 longitude, 338 m (1,110 ft) above sea level.
  • The station reports from 1935 to 2026, 92 years of record.
  • 1,464 records set at Norris still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Norris tied a daily record high minimum temperature of 19.4 C (66.9 F) on 13 September 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Tennessee, United States, 36.21 latitude, -84.06 longitude.
  • Elevation: 338 m (1,110 ft).
  • Period of record: 1935 to 2026, 92 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

9 days at or beyond a record
Daily record high and record low at Norris, with 2026 drawn through them The band shows the record high and record low for each calendar day at Norris. The lines show the 2026 daily maximum and minimum. 9 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Norris. The lines show the 2026 daily maximum and minimum. 9 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Norris, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan24.4 C (75.9 F)-28.3 C (-18.9 F)16.1 C (61.0 F)-15.6 C (3.9 F)
Feb26.7 C (80.1 F)-27.2 C (-17.0 F)21.1 C (70.0 F)-15.0 C (5.0 F)
Mar30.6 C (87.1 F)-19.4 C (-2.9 F)29.4 C (84.9 F)-4.4 C (24.1 F)
Apr33.3 C (91.9 F)-7.2 C (19.0 F)30.6 C (87.1 F)-4.4 C (24.1 F)
May34.4 C (93.9 F)-6.7 C (19.9 F)31.1 C (88.0 F)1.7 C (35.1 F)
Jun40.0 C (104.0 F)1.7 C (35.1 F)31.1 C (88.0 F)10.0 C (50.0 F)
Jul40.6 C (105.1 F)5.0 C (41.0 F)33.3 C (91.9 F)13.9 C (57.0 F)
Aug37.8 C (100.0 F)5.6 C (42.1 F)31.7 C (89.1 F)13.3 C (55.9 F)
Sep38.9 C (102.0 F)-1.1 C (30.0 F)32.2 C (90.0 F)7.2 C (45.0 F)
Oct33.9 C (93.0 F)-7.2 C (19.0 F)28.3 C (82.9 F)7.2 C (45.0 F)
Nov31.1 C (88.0 F)-14.4 C (6.1 F)n/an/a
Dec23.9 C (75.0 F)-21.1 C (-6.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Norris by the year they were set 1,464 records at Norris still stand. 1936 holds the most, with 56. 02040601935: 371936: 561937: 301938: 191939: 211940: 311944: 41945: 201946: 211947: 271948: 171953: 71954: 441955: 381956: 161957: 431958: 131959: 181960: 281961: 311962: 251963: 331964: 181965: 161966: 141967: 281968: 121969: 101970: 241971: 141972: 191973: 111974: 221975: 131976: 141977: 241978: 81979: 51980: 171981: 81982: 191983: 171984: 151985: 231986: 211987: 111988: 201989: 271990: 71991: 211992: 91993: 141994: 41995: 121996: 251997: 161998: 141999: 102000: 152001: 92002: 162003: 72004: 82005: 42006: 42007: 182008: 92009: 92010: 92011: 152012: 142013: 62014: 132015: 222016: 102017: 142018: 272019: 232020: 202021: 62022: 102023: 102024: 92025: 82026: 81935194719601969197819871996200520142023
1,464 records at Norris still stand. 1936 holds the most, with 56.
Standing records at Norris by the year they were set
Year setStanding records
193537
193656
193730
193819
193921
194031
19444
194520
194621
194727
194817
19537
195444
195538
195616
195743
195813
195918
196028
196131
196225
196333
196418
196516
196614
196728
196812
196910
197024
197114
197219
197311
197422
197513
197614
197724
19788
19795
198017
19818
198219
198317
198415
198523
198621
198711
198820
198927
19907
199121
19929
199314
19944
199512
199625
199716
199814
199910
200015
20019
200216
20037
20048
20054
20064
200718
20089
20099
20109
201115
201214
20136
201413
201522
201610
201714
201827
201923
202020
20216
202210
202310
20249
20258
20268

All-Time Record Progression

4 new records
When Norris set new all-time records 4 all-time records were set at Norris between 8 June 1984 and 2 February 1996. Each dot is a new record. Record high minimum temperatureRecord low maximum temperatureRecord low minimum temperatureRecord snow depth8 June 1984: Record high minimum temperature 26.1 C (79.0 F)20 January 1985: Record low maximum temperature -18.9 C (-2.0 F)20 January 1985: Record low minimum temperature -28.3 C (-18.9 F)2 February 1996: Record snow depth 30.5 cm (12.0 in)198519901995
4 all-time records were set at Norris between 8 June 1984 and 2 February 1996. Each dot is a new record.
When Norris set new all-time records
DateKindDetail
1984-06-08Record high minimum temperatureRecord high minimum temperature 26.1 C (79.0 F)
1985-01-20Record low maximum temperatureRecord low maximum temperature -18.9 C (-2.0 F)
1985-01-20Record low minimum temperatureRecord low minimum temperature -28.3 C (-18.9 F)
1996-02-02Record snow depthRecord snow depth 30.5 cm (12.0 in)

Wettest Day of Each Month

Apr: 170.2 mm (6.7 in)
Record daily precipitation for each month at Norris The wettest day on record for each calendar month at Norris. The most was 170.2 mm (6.7 in) on 4 April 1977. 050100150200 Jan: 80.3 mm (3.2 in), 2 January 1937 Jan Feb: 119.9 mm (4.7 in), 16 February 2003 Feb Mar: 119.4 mm (4.7 in), 16 March 1973 Mar Apr: 170.2 mm (6.7 in), 4 April 1977 Apr May: 118.1 mm (4.6 in), 10 May 1995 May Jun: 101.6 mm (4.0 in), 28 June 2026 Jun Jul: 135.6 mm (5.3 in), 6 July 1967 Jul Aug: 115.6 mm (4.6 in), 10 August 1970 Aug Sep: 133.1 mm (5.2 in), 6 September 2011 Sep Oct: 116.1 mm (4.6 in), 29 October 2020 Oct Nov: 147.1 mm (5.8 in), 27 November 1973 Nov Dec: 130.3 mm (5.1 in), 23 December 1990 Dec
The wettest day on record for each calendar month at Norris. The most was 170.2 mm (6.7 in) on 4 April 1977.
Record daily precipitation for each month at Norris
MonthRecord daily precipitation (mm)Date
Jan80.3 mm (3.2 in)2 January 1937
Feb119.9 mm (4.7 in)16 February 2003
Mar119.4 mm (4.7 in)16 March 1973
Apr170.2 mm (6.7 in)4 April 1977
May118.1 mm (4.6 in)10 May 1995
Jun101.6 mm (4.0 in)28 June 2026
Jul135.6 mm (5.3 in)6 July 1967
Aug115.6 mm (4.6 in)10 August 1970
Sep133.1 mm (5.2 in)6 September 2011
Oct116.1 mm (4.6 in)29 October 2020
Nov147.1 mm (5.8 in)27 November 1973
Dec130.3 mm (5.1 in)23 December 1990

Period of Record Coverage

1935 to 2026
Days with data per year at Norris 85 years of record at Norris, 1935 to 2026. 13 years have data for under 90 percent of days and are left out of rankings: 1944, 1945, 1947, 1948, 1953, 1979, 1980, 1981 and others. 1935: 358 of 365 days1936: 366 of 366 days1937: 353 of 365 days1938: 344 of 365 days1939: 337 of 365 days1940: 347 of 366 days1944: 87 of 366 days1945: 281 of 365 days1946: 352 of 365 days1947: 325 of 365 days1948: 296 of 366 days1953: 61 of 365 days1954: 365 of 365 days1955: 363 of 365 days1956: 366 of 366 days1957: 362 of 365 days1958: 361 of 365 days1959: 358 of 365 days1960: 354 of 366 days1961: 348 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 365 of 366 days1965: 364 of 365 days1966: 364 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 336 of 366 days1973: 364 of 365 days1974: 365 of 365 days1975: 333 of 365 days1976: 364 of 366 days1977: 362 of 365 days1978: 332 of 365 days1979: 268 of 365 days1980: 284 of 366 days1981: 225 of 365 days1982: 305 of 365 days1983: 266 of 365 days1984: 244 of 366 days1985: 356 of 365 days1986: 360 of 365 days1987: 335 of 365 days1988: 363 of 366 days1989: 363 of 365 days1990: 359 of 365 days1991: 357 of 365 days1992: 362 of 366 days1993: 359 of 365 days1994: 360 of 365 days1995: 362 of 365 days1996: 360 of 366 days1997: 359 of 365 days1998: 363 of 365 days1999: 365 of 365 days2000: 365 of 366 days2001: 363 of 365 days2002: 364 of 365 days2003: 328 of 365 days2004: 362 of 366 days2005: 330 of 365 days2006: 359 of 365 days2007: 362 of 365 days2008: 365 of 366 days2009: 365 of 365 days2010: 363 of 365 days2011: 362 of 365 days2012: 357 of 366 days2013: 363 of 365 days2014: 358 of 365 days2015: 362 of 365 days2016: 365 of 366 days2017: 365 of 365 days2018: 364 of 365 days2019: 361 of 365 days2020: 365 of 366 days2021: 364 of 365 days2022: 365 of 365 days2023: 364 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 277 of 365 days193519651980199520102025
85 years of record at Norris, 1935 to 2026. 13 years have data for under 90 percent of days and are left out of rankings: 1944, 1945, 1947, 1948, 1953, 1979, 1980, 1981 and others.
Days with data per year at Norris
YearDays with dataShare of yearComplete
193535898%Yes
1936366100%Yes
193735397%Yes
193834494%Yes
193933792%Yes
194034795%Yes
19448724%No
194528177%No
194635296%Yes
194732589%No
194829681%No
19536117%No
1954365100%Yes
195536399%Yes
1956366100%Yes
195736299%Yes
195836199%Yes
195935898%Yes
196035497%Yes
196134895%Yes
1962365100%Yes
1963365100%Yes
1964365100%Yes
1965364100%Yes
1966364100%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
197233692%Yes
1973364100%Yes
1974365100%Yes
197533391%Yes
197636499%Yes
197736299%Yes
197833291%Yes
197926873%No
198028478%No
198122562%No
198230584%No
198326673%No
198424467%No
198535698%Yes
198636099%Yes
198733592%Yes
198836399%Yes
198936399%Yes
199035998%Yes
199135798%Yes
199236299%Yes
199335998%Yes
199436099%Yes
199536299%Yes
199636098%Yes
199735998%Yes
199836399%Yes
1999365100%Yes
2000365100%Yes
200136399%Yes
2002364100%Yes
200332890%No
200436299%Yes
200533090%Yes
200635998%Yes
200736299%Yes
2008365100%Yes
2009365100%Yes
201036399%Yes
201136299%Yes
201235798%Yes
201336399%Yes
201435898%Yes
201536299%Yes
2016365100%Yes
2017365100%Yes
2018364100%Yes
201936199%Yes
2020365100%Yes
2021364100%Yes
2022365100%Yes
2023364100%Yes
2024366100%Yes
2025365100%Yes
202627776%No

Latest Records

20
Latest records at Norris
DateStationRecordValueBeat old record byOld record stoodSignificance
13 September 2026Norris, USdaily high min (Tie, Provisional)19.4 C (66.9 F)tie79 years8 of 100 (Routine)
23 July 2026Norris, USdaily rain82.6 mm (3.3 in)23.4 mm (0.9 in)7 years28 of 100 (Routine)
8 July 2026Norris, USdaily rain34.3 mm (1.4 in)9.4 mm (0.37 in)72 years37 of 100 (Notable)
28 June 2026Norris, USmonthly rain101.6 mm (4.0 in)9.4 mm (0.37 in)27 years34 of 100 (Routine)
30 May 2026Norris, USdaily rain26.7 mm (1.1 in)1.8 mm (0.07 in)13 years14 of 100 (Routine)
25 May 2026Norris, USdaily rain47.8 mm (1.9 in)14.8 mm (0.6 in)28 years28 of 100 (Routine)
1 April 2026Norris, USdaily high max (Tie)29.4 C (84.9 F)tie63 years6 of 100 (Routine)
31 March 2026Norris, USdaily high max29.4 C (84.9 F)0.5 C (0.9 F)63 years27 of 100 (Routine)
30 March 2026Norris, USdaily high max29.4 C (84.9 F)0.5 C (0.9 F)28 years17 of 100 (Routine)
29 March 2026Norris, USdaily high max29.4 C (84.9 F)0.5 C (0.9 F)36 years20 of 100 (Routine)
28 March 2026Norris, USdaily high max (Tie)29.4 C (84.9 F)tie5 years2 of 100 (Routine)
27 March 2026Norris, USdaily high max29.4 C (84.9 F)1.1 C (2.0 F)35 years20 of 100 (Routine)
24 March 2026Norris, USdaily high max29.4 C (84.9 F)2.2 C (4.0 F)87 years38 of 100 (Notable)
23 March 2026Norris, USdaily high max (Tie)29.4 C (84.9 F)tie91 years9 of 100 (Routine)
7 March 2026Norris, USdaily high max27.2 C (81.0 F)1.1 C (2.0 F)69 years30 of 100 (Routine)
26 February 2026Norris, USdaily rain55.9 mm (2.2 in)17.3 mm (0.7 in)91 years47 of 100 (Notable)
2 February 2026Norris, USdaily low max-3.3 C (26.1 F)0.5 C (0.9 F)55 years25 of 100 (Routine)
1 February 2026Norris, USdaily low max-8.3 C (17.1 F)2.7 C (4.9 F)90 years40 of 100 (Notable)
31 January 2026Norris, USdaily snow depth15.2 cm (6.0 in)12.7 cm (5.0 in)55 years57 of 100 (Notable)
31 January 2026Norris, USdaily snowfall15.2 cm (6.0 in)12.7 cm (5.0 in)55 years56 of 100 (Notable)

Climate Trend

66 complete years, 1935 to 2025
Annual mean temperature at Norris as warming stripes, 1935 to 2025 One stripe for each of 66 complete years at Norris, 1935 to 2025. Blue stripes are years cooler than the station's own mean of 13.6 C (56.5 F); red stripes are warmer. The coolest year was 1996, at 12.3 C (54.1 F), and the warmest was 1957, at 15.0 C (58.9 F). The strongest colour marks a difference of 1.4 C (2.5 F). 1935: 14.4 C, +0.7 C from the station mean1936: 14.4 C, +0.8 C from the station mean1937: 13.7 C, 0.0 C from the station mean1938: 14.7 C, +1.1 C from the station mean1939: 14.7 C, +1.0 C from the station mean1940: 12.8 C, -0.8 C from the station mean1946: 14.9 C, +1.3 C from the station mean1954: 14.9 C, +1.3 C from the station mean1955: 13.6 C, 0.0 C from the station mean1956: 14.0 C, +0.4 C from the station mean1957: 15.0 C, +1.3 C from the station mean1958: 12.6 C, -1.0 C from the station mean1959: 13.7 C, +0.1 C from the station mean1960: 12.9 C, -0.7 C from the station mean1961: 13.1 C, -0.5 C from the station mean1962: 13.5 C, -0.2 C from the station mean1963: 12.8 C, -0.8 C from the station mean1964: 14.3 C, +0.7 C from the station mean1965: 14.3 C, +0.7 C from the station mean1966: 13.5 C, -0.1 C from the station mean1967: 13.7 C, +0.1 C from the station mean1968: 13.3 C, -0.3 C from the station mean1969: 13.1 C, -0.5 C from the station mean1970: 14.2 C, +0.6 C from the station mean1971: 14.4 C, +0.8 C from the station mean1973: 14.5 C, +0.9 C from the station mean1974: 14.6 C, +1.0 C from the station mean1976: 13.0 C, -0.6 C from the station mean1977: 13.7 C, +0.1 C from the station mean1985: 12.4 C, -1.2 C from the station mean1986: 14.0 C, +0.4 C from the station mean1988: 12.5 C, -1.1 C from the station mean1989: 12.7 C, -0.9 C from the station mean1990: 14.2 C, +0.5 C from the station mean1991: 14.1 C, +0.5 C from the station mean1992: 12.8 C, -0.8 C from the station mean1993: 13.1 C, -0.5 C from the station mean1994: 13.1 C, -0.5 C from the station mean1995: 12.9 C, -0.8 C from the station mean1996: 12.3 C, -1.4 C from the station mean1997: 13.0 C, -0.6 C from the station mean1998: 14.4 C, +0.8 C from the station mean1999: 13.6 C, 0.0 C from the station mean2000: 13.2 C, -0.4 C from the station mean2001: 13.3 C, -0.4 C from the station mean2002: 13.7 C, +0.1 C from the station mean2004: 13.6 C, 0.0 C from the station mean2006: 13.6 C, -0.1 C from the station mean2007: 14.1 C, +0.5 C from the station mean2008: 13.0 C, -0.7 C from the station mean2009: 13.0 C, -0.7 C from the station mean2010: 12.9 C, -0.7 C from the station mean2011: 13.7 C, 0.0 C from the station mean2012: 14.8 C, +1.2 C from the station mean2013: 13.0 C, -0.6 C from the station mean2014: 12.9 C, -0.7 C from the station mean2015: 13.9 C, +0.3 C from the station mean2017: 14.2 C, +0.6 C from the station mean2018: 13.7 C, +0.1 C from the station mean2019: 14.1 C, +0.5 C from the station mean2020: 13.5 C, -0.1 C from the station mean2021: 13.3 C, -0.3 C from the station mean2022: 13.0 C, -0.6 C from the station mean2023: 13.8 C, +0.1 C from the station mean2024: 14.0 C, +0.4 C from the station mean2025: 13.7 C, 0.0 C from the station mean1935194019501960197019801990200020102020
One stripe for each of 66 complete years at Norris, 1935 to 2025. Blue stripes are years cooler than the station's own mean of 13.6 C (56.5 F); red stripes are warmer. The coolest year was 1996, at 12.3 C (54.1 F), and the warmest was 1957, at 15.0 C (58.9 F). The strongest colour marks a difference of 1.4 C (2.5 F).
Annual mean temperature at Norris as warming stripes, 1935 to 2025
YearAnnual mean temperatureDifference from the station mean
193514.4 C+0.75 C
193614.4 C+0.80 C
193713.7 C+0.04 C
193814.7 C+1.06 C
193914.7 C+1.03 C
194012.8 C-0.78 C
194614.9 C+1.30 C
195414.9 C+1.26 C
195513.6 C-0.03 C
195614.0 C+0.39 C
195715.0 C+1.35 C
195812.6 C-1.02 C
195913.7 C+0.12 C
196012.9 C-0.68 C
196113.1 C-0.54 C
196213.5 C-0.17 C
196312.8 C-0.79 C
196414.3 C+0.66 C
196514.3 C+0.68 C
196613.5 C-0.11 C
196713.7 C+0.06 C
196813.3 C-0.28 C
196913.1 C-0.54 C
197014.2 C+0.58 C
197114.4 C+0.79 C
197314.5 C+0.87 C
197414.6 C+0.98 C
197613.0 C-0.63 C
197713.7 C+0.08 C
198512.4 C-1.19 C
198614.0 C+0.38 C
198812.5 C-1.08 C
198912.7 C-0.89 C
199014.2 C+0.55 C
199114.1 C+0.50 C
199212.8 C-0.82 C
199313.1 C-0.49 C
199413.1 C-0.51 C
199512.9 C-0.76 C
199612.3 C-1.35 C
199713.0 C-0.63 C
199814.4 C+0.79 C
199913.6 C+0.01 C
200013.2 C-0.40 C
200113.3 C-0.37 C
200213.7 C+0.12 C
200413.6 C-0.03 C
200613.6 C-0.06 C
200714.1 C+0.50 C
200813.0 C-0.65 C
200913.0 C-0.67 C
201012.9 C-0.71 C
201113.7 C+0.05 C
201214.8 C+1.16 C
201313.0 C-0.64 C
201412.9 C-0.70 C
201513.9 C+0.26 C
201714.2 C+0.56 C
201813.7 C+0.06 C
201914.1 C+0.48 C
202013.5 C-0.14 C
202113.3 C-0.31 C
202213.0 C-0.63 C
202313.8 C+0.14 C
202414.0 C+0.36 C
202513.7 C+0.03 C

The annual mean temperature here has fallen by 0.07 C (0.01 to 0.13) per decade over 1935 to 2025. In Fahrenheit: 0.12 F (0.01 to 0.24) per decade. The slope is a straight line fitted to 66 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Norris
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.07 C (-0.13 to -0.01) per decade-0.12 F (-0.24 to -0.01) per decade1935 to 202566Fall
Mean daily maximum-0.09 C (-0.17 to -0.01) per decade-0.16 F (-0.30 to -0.03) per decade1935 to 202566Fall
Mean daily minimum-0.05 C (-0.12 to 0.02) per decade-0.09 F (-0.21 to 0.04) per decade1935 to 202566Not clearly different from zero

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

1935 to 2026
Yearly extremes at Norris: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)40.6 C (105.1 F)196434.4 C (93.9 F)85
Coldest night (TNn)-28.3 C (-18.9 F)1985-16.1 C (3.0 F)85
Wettest day (Rx1day)170.2 mm (6.7 in)197770.6 mm (2.8 in)81
Wettest five days (Rx5day)264.0 mm (10.4 in)1973121.2 mm (4.8 in)81
Longest dry spell (CDD)43 days199817 days81

Hottest day (TXx)

Hottest day (TXx) at Norris by year The hottest day of the year at Norris, 1935 to 2026. The record is 40.6 C (105.1 F) in 1964, marked on the chart; the median year is 34.4 C (93.9 F). 20253035404519401960198020002020Record: 40.6 C (105.1 F) in 1964
The hottest day of the year at Norris, 1935 to 2026. The record is 40.6 C (105.1 F) in 1964, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Norris by year
YearHottest day (TXx)
193537.8 C (100.0 F)
193640.0 C (104.0 F)
193735.6 C (96.1 F)
193833.9 C (93.0 F)
193936.1 C (97.0 F)
194035.0 C (95.0 F)
194424.4 C (75.9 F)
194535.0 C (95.0 F)
194633.3 C (91.9 F)
194736.1 C (97.0 F)
194838.9 C (102.0 F)
195322.2 C (72.0 F)
195438.9 C (102.0 F)
195534.4 C (93.9 F)
195635.6 C (96.1 F)
195737.8 C (100.0 F)
195833.3 C (91.9 F)
195935.6 C (96.1 F)
196034.4 C (93.9 F)
196134.4 C (93.9 F)
196235.6 C (96.1 F)
196333.9 C (93.0 F)
196440.6 C (105.1 F)
196535.6 C (96.1 F)
196637.8 C (100.0 F)
196734.4 C (93.9 F)
196836.7 C (98.1 F)
196935.6 C (96.1 F)
197035.6 C (96.1 F)
197135.0 C (95.0 F)
197235.0 C (95.0 F)
197335.0 C (95.0 F)
197436.1 C (97.0 F)
197538.9 C (102.0 F)
197634.4 C (93.9 F)
197736.7 C (98.1 F)
197836.7 C (98.1 F)
197931.1 C (88.0 F)
198038.9 C (102.0 F)
198132.2 C (90.0 F)
198232.8 C (91.0 F)
198336.1 C (97.0 F)
198433.9 C (93.0 F)
198533.3 C (91.9 F)
198635.6 C (96.1 F)
198735.6 C (96.1 F)
198837.8 C (100.0 F)
198932.8 C (91.0 F)
199036.7 C (98.1 F)
199133.3 C (91.9 F)
199233.3 C (91.9 F)
199335.6 C (96.1 F)
199431.7 C (89.1 F)
199534.4 C (93.9 F)
199633.3 C (91.9 F)
199734.4 C (93.9 F)
199835.0 C (95.0 F)
199935.0 C (95.0 F)
200033.3 C (91.9 F)
200133.3 C (91.9 F)
200234.4 C (93.9 F)
200332.8 C (91.0 F)
200432.2 C (90.0 F)
200532.8 C (91.0 F)
200633.9 C (93.0 F)
200737.2 C (99.0 F)
200834.4 C (93.9 F)
200932.8 C (91.0 F)
201033.9 C (93.0 F)
201134.4 C (93.9 F)
201239.4 C (102.9 F)
201332.8 C (91.0 F)
201432.2 C (90.0 F)
201534.4 C (93.9 F)
201636.1 C (97.0 F)
201733.3 C (91.9 F)
201833.3 C (91.9 F)
201933.9 C (93.0 F)
202034.4 C (93.9 F)
202132.2 C (90.0 F)
202233.9 C (93.0 F)
202332.8 C (91.0 F)
202433.9 C (93.0 F)
202533.3 C (91.9 F)
202633.3 C (91.9 F)

Coldest night (TNn)

Coldest night (TNn) at Norris by year The coldest night of the year at Norris, 1935 to 2026. The record is -28.3 C (-18.9 F) in 1985, marked on the chart; the median year is -16.1 C (3.0 F). -30-25-20-15-10-519401960198020002020Record: -28.3 C (-18.9 F) in 1985
The coldest night of the year at Norris, 1935 to 2026. The record is -28.3 C (-18.9 F) in 1985, marked on the chart; the median year is -16.1 C (3.0 F).
Coldest night (TNn) at Norris by year
YearColdest night (TNn)
1935-15.0 C (5.0 F)
1936-18.3 C (-0.9 F)
1937-15.0 C (5.0 F)
1938-13.9 C (7.0 F)
1939-13.9 C (7.0 F)
1940-22.2 C (-8.0 F)
1944-13.9 C (7.0 F)
1945-14.4 C (6.1 F)
1946-13.3 C (8.1 F)
1947-14.4 C (6.1 F)
1948-17.2 C (1.0 F)
1953-17.8 C (0.0 F)
1954-9.4 C (15.1 F)
1955-17.8 C (0.0 F)
1956-11.1 C (12.0 F)
1957-13.9 C (7.0 F)
1958-18.3 C (-0.9 F)
1959-15.6 C (3.9 F)
1960-17.8 C (0.0 F)
1961-18.9 C (-2.0 F)
1962-21.1 C (-6.0 F)
1963-23.3 C (-9.9 F)
1964-15.0 C (5.0 F)
1965-21.7 C (-7.1 F)
1966-25.6 C (-14.1 F)
1967-17.8 C (0.0 F)
1968-16.1 C (3.0 F)
1969-17.8 C (0.0 F)
1970-21.1 C (-6.0 F)
1971-17.8 C (0.0 F)
1972-21.1 C (-6.0 F)
1973-16.1 C (3.0 F)
1974-13.3 C (8.1 F)
1975-17.2 C (1.0 F)
1976-17.8 C (0.0 F)
1977-23.9 C (-11.0 F)
1978-17.8 C (0.0 F)
1979-17.8 C (0.0 F)
1980-19.4 C (-2.9 F)
1981-12.2 C (10.0 F)
1982-23.9 C (-11.0 F)
1983-17.8 C (0.0 F)
1984-16.7 C (1.9 F)
1985-28.3 C (-18.9 F)
1986-19.4 C (-2.9 F)
1987-15.6 C (3.9 F)
1988-15.6 C (3.9 F)
1989-19.4 C (-2.9 F)
1990-10.6 C (12.9 F)
1991-15.6 C (3.9 F)
1992-13.3 C (8.1 F)
1993-16.7 C (1.9 F)
1994-21.1 C (-6.0 F)
1995-17.2 C (1.0 F)
1996-27.2 C (-17.0 F)
1997-15.0 C (5.0 F)
1998-12.2 C (10.0 F)
1999-10.6 C (12.9 F)
2000-13.3 C (8.1 F)
2001-14.4 C (6.1 F)
2002-12.8 C (9.0 F)
2003-16.7 C (1.9 F)
2004-12.8 C (9.0 F)
2005-13.3 C (8.1 F)
2006-11.7 C (10.9 F)
2007-12.8 C (9.0 F)
2008-12.8 C (9.0 F)
2009-16.1 C (3.0 F)
2010-13.9 C (7.0 F)
2011-12.8 C (9.0 F)
2012-8.9 C (16.0 F)
2013-8.9 C (16.0 F)
2014-18.9 C (-2.0 F)
2015-17.2 C (1.0 F)
2016-12.8 C (9.0 F)
2017-13.3 C (8.1 F)
2018-16.1 C (3.0 F)
2019-11.7 C (10.9 F)
2020-16.1 C (3.0 F)
2021-8.3 C (17.1 F)
2022-16.7 C (1.9 F)
2023-8.9 C (16.0 F)
2024-20.6 C (-5.1 F)
2025-16.1 C (3.0 F)
2026-15.6 C (3.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Norris by year The wettest day of the year at Norris, 1935 to 2026. The record is 170.2 mm (6.7 in) in 1977, marked on the chart; the median year is 70.6 mm (2.8 in). 05010015020019401960198020002020Record: 170.2 mm (6.7 in) in 1977
The wettest day of the year at Norris, 1935 to 2026. The record is 170.2 mm (6.7 in) in 1977, marked on the chart; the median year is 70.6 mm (2.8 in).
Wettest day (Rx1day) at Norris by year
YearWettest day (Rx1day)
193561.5 mm (2.4 in)
193696.0 mm (3.8 in)
193780.3 mm (3.2 in)
193854.9 mm (2.2 in)
193982.6 mm (3.3 in)
194039.4 mm (1.6 in)
1944n/a
1945n/a
1946n/a
1947n/a
19480.0 mm (0.00 in)
195339.4 mm (1.6 in)
195473.9 mm (2.9 in)
195569.3 mm (2.7 in)
195654.4 mm (2.1 in)
195761.2 mm (2.4 in)
195847.0 mm (1.9 in)
195955.9 mm (2.2 in)
196049.5 mm (1.9 in)
196164.8 mm (2.6 in)
1962114.8 mm (4.5 in)
1963101.6 mm (4.0 in)
196462.0 mm (2.4 in)
196559.4 mm (2.3 in)
196667.1 mm (2.6 in)
1967135.6 mm (5.3 in)
196851.3 mm (2.0 in)
1969128.3 mm (5.1 in)
1970115.6 mm (4.6 in)
197165.0 mm (2.6 in)
197262.2 mm (2.4 in)
1973147.1 mm (5.8 in)
197464.0 mm (2.5 in)
197572.4 mm (2.9 in)
197652.6 mm (2.1 in)
1977170.2 mm (6.7 in)
197872.4 mm (2.9 in)
197961.0 mm (2.4 in)
198049.5 mm (1.9 in)
198150.8 mm (2.0 in)
198250.8 mm (2.0 in)
198346.7 mm (1.8 in)
198448.3 mm (1.9 in)
198557.7 mm (2.3 in)
198659.4 mm (2.3 in)
198762.7 mm (2.5 in)
198868.3 mm (2.7 in)
198958.4 mm (2.3 in)
1990130.3 mm (5.1 in)
199188.9 mm (3.5 in)
199256.6 mm (2.2 in)
199392.2 mm (3.6 in)
1994104.6 mm (4.1 in)
1995118.1 mm (4.6 in)
199688.1 mm (3.5 in)
1997115.1 mm (4.5 in)
1998153.9 mm (6.1 in)
199992.2 mm (3.6 in)
2000101.1 mm (4.0 in)
200152.1 mm (2.1 in)
200280.8 mm (3.2 in)
2003119.9 mm (4.7 in)
200481.5 mm (3.2 in)
200547.0 mm (1.9 in)
200668.8 mm (2.7 in)
200755.1 mm (2.2 in)
200858.9 mm (2.3 in)
200991.4 mm (3.6 in)
201088.9 mm (3.5 in)
2011133.1 mm (5.2 in)
2012132.8 mm (5.2 in)
201374.2 mm (2.9 in)
201470.1 mm (2.8 in)
2015114.0 mm (4.5 in)
201688.9 mm (3.5 in)
201770.6 mm (2.8 in)
201892.7 mm (3.6 in)
2019100.3 mm (3.9 in)
2020116.1 mm (4.6 in)
202186.4 mm (3.4 in)
202281.3 mm (3.2 in)
202364.5 mm (2.5 in)
202461.0 mm (2.4 in)
202590.2 mm (3.6 in)
2026101.6 mm (4.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Norris by year The wettest five days of the year at Norris, 1935 to 2026. The record is 264.0 mm (10.4 in) in 1973, marked on the chart; the median year is 121.2 mm (4.8 in). 010020030019401960198020002020Record: 264.0 mm (10.4 in) in 1973
The wettest five days of the year at Norris, 1935 to 2026. The record is 264.0 mm (10.4 in) in 1973, marked on the chart; the median year is 121.2 mm (4.8 in).
Wettest five days (Rx5day) at Norris by year
YearWettest five days (Rx5day)
193597.9 mm (3.9 in)
1936116.9 mm (4.6 in)
1937134.1 mm (5.3 in)
193875.9 mm (3.0 in)
1939114.8 mm (4.5 in)
194066.1 mm (2.6 in)
1944n/a
1945n/a
1946n/a
1947n/a
19480.0 mm (0.00 in)
195373.7 mm (2.9 in)
1954115.0 mm (4.5 in)
1955119.6 mm (4.7 in)
1956149.4 mm (5.9 in)
1957198.8 mm (7.8 in)
1958119.9 mm (4.7 in)
195989.9 mm (3.5 in)
1960131.5 mm (5.2 in)
1961139.2 mm (5.5 in)
1962154.7 mm (6.1 in)
1963114.3 mm (4.5 in)
1964121.4 mm (4.8 in)
1965121.2 mm (4.8 in)
1966101.7 mm (4.0 in)
1967195.3 mm (7.7 in)
196869.7 mm (2.7 in)
1969161.6 mm (6.4 in)
1970222.6 mm (8.8 in)
1971103.9 mm (4.1 in)
1972123.4 mm (4.9 in)
1973264.0 mm (10.4 in)
1974114.0 mm (4.5 in)
1975180.1 mm (7.1 in)
197677.5 mm (3.1 in)
1977224.3 mm (8.8 in)
197894.3 mm (3.7 in)
1979102.6 mm (4.0 in)
1980135.9 mm (5.4 in)
198174.5 mm (2.9 in)
198291.5 mm (3.6 in)
198373.9 mm (2.9 in)
1984105.4 mm (4.1 in)
198576.4 mm (3.0 in)
198689.4 mm (3.5 in)
198769.1 mm (2.7 in)
198886.9 mm (3.4 in)
1989119.1 mm (4.7 in)
1990172.5 mm (6.8 in)
1991183.5 mm (7.2 in)
199266.3 mm (2.6 in)
1993136.0 mm (5.4 in)
1994189.0 mm (7.4 in)
1995149.8 mm (5.9 in)
199698.0 mm (3.9 in)
1997141.3 mm (5.6 in)
1998249.9 mm (9.8 in)
1999185.1 mm (7.3 in)
2000122.9 mm (4.8 in)
2001118.9 mm (4.7 in)
2002154.2 mm (6.1 in)
2003189.5 mm (7.5 in)
2004104.4 mm (4.1 in)
200565.4 mm (2.6 in)
200695.2 mm (3.7 in)
200793.2 mm (3.7 in)
2008121.6 mm (4.8 in)
2009121.9 mm (4.8 in)
2010173.5 mm (6.8 in)
2011101.1 mm (4.0 in)
2012137.1 mm (5.4 in)
2013125.0 mm (4.9 in)
2014113.3 mm (4.5 in)
2015124.1 mm (4.9 in)
2016143.7 mm (5.7 in)
2017164.5 mm (6.5 in)
2018132.0 mm (5.2 in)
2019190.2 mm (7.5 in)
2020146.4 mm (5.8 in)
2021127.0 mm (5.0 in)
2022134.6 mm (5.3 in)
202394.5 mm (3.7 in)
2024112.6 mm (4.4 in)
2025115.1 mm (4.5 in)
2026131.9 mm (5.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Norris by year The longest dry spell of the year at Norris, 1935 to 2026. The record is 43 days in 1998, marked on the chart; the median year is 17 days. 0102030405019401960198020002020Record: 43 days in 1998
The longest dry spell of the year at Norris, 1935 to 2026. The record is 43 days in 1998, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Norris by year
YearLongest dry spell (CDD)
193514 days
193620 days
193714 days
193834 days
193918 days
194014 days
1944n/a
1945n/a
1946n/a
1947n/a
194830 days
195320 days
195429 days
195517 days
195619 days
195713 days
195826 days
195918 days
196016 days
196115 days
196219 days
196332 days
196419 days
196516 days
196612 days
196717 days
196826 days
196913 days
197023 days
197112 days
197210 days
197326 days
197423 days
197512 days
197613 days
197718 days
197828 days
197915 days
198017 days
198120 days
198221 days
198319 days
198422 days
198518 days
198617 days
198720 days
198815 days
198919 days
199013 days
199116 days
199219 days
199317 days
199415 days
199515 days
199614 days
199719 days
199843 days
199921 days
200041 days
200142 days
200218 days
200313 days
200415 days
200515 days
200613 days
200722 days
200818 days
200911 days
201014 days
20117 days
201213 days
20139 days
201416 days
201516 days
201621 days
201713 days
201818 days
201919 days
202021 days
202117 days
202216 days
202311 days
202413 days
202514 days
202619 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

66 years with a frost

Across 66 years with a frost, the median last spring frost at Norris falls on 21 April and the median first autumn frost on 23 October, which leaves a median of 186 days between them.

In 1993 to 2025 the median growing season was 187 days. That is 2 days more than in 1935 to 1985.

Fitted over all years, the growing season changes by 0.0 days per decade at this station.

Frost dates and growing season at Norris
MeasureMedian, all yearsEarliest period (1935 to 1985)Recent period (1993 to 2025)Recent against earliestFitted trend
Last spring frost21 April18 April21 April3 days later+0.2 days per decade
First autumn frost23 October21 October24 October3 days later+0.1 days per decade
Growing days186 days185 days187 days2 days more0.0 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

72 years, 1936 to 2025

A day with at least 75.9 mm (3.0 in) of rain is expected about once in 2 years. A day with at least 185.1 mm (7.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Norris: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years75.9 mm (3.0 in)
5 years101.8 mm (4.0 in)
10 years120.2 mm (4.7 in)
25 years145.0 mm (5.7 in)
50 years164.6 mm (6.5 in)
100 years185.1 mm (7.3 in)Longer than the 72 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, 72 years of values from 1936 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: 170.2 mm (6.7 in) in 1977; 153.9 mm (6.1 in) in 1998; 147.1 mm (5.8 in) in 1973.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2010 to 2025 against 1961 to 1990

Over 2010 to 2025, Norris had a mean temperature of 13.6 C (56.5 F) and 1,467.7 mm (57.8 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Valley Head (United States, 230 km away), Copperhill (United States, 139 km away) and Waynesboro (United States, 349 km away).

Climate twins of Norris: stations whose 1961 to 1990 climate is closest to its 2010 to 2025 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
Valley HeadUnited States230 km (143 mi)13.7 C (56.7 F)1,479.8 mm (58.3 in)0.49
CopperhillUnited States139 km (86 mi)13.7 C (56.7 F)1,507.9 mm (59.4 in)0.51
WaynesboroUnited States349 km (217 mi)13.7 C (56.7 F)1,456.4 mm (57.3 in)0.64

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 Norris standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Norris 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).