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Arthur 4NW Weather Records (USC00260438)

Record envelope, standing records and threshold days for Arthur 4NW (USC00260438), Nevada, United States, with 117 years of record.

Key Facts for Arthur 4NW

  • Arthur 4NW (USC00260438) is a weather station in Nevada, United States at 40.78 latitude and -115.19 longitude, 1,908 m (6,260 ft) above sea level.
  • The station reports from 1910 to 2026, 117 years of record.
  • 1,464 records set at Arthur 4NW still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Arthur 4NW tied a daily record high maximum temperature of 32.8 C (91.0 F) on 26 August 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Nevada, United States, 40.78 latitude, -115.19 longitude.
  • Elevation: 1,908 m (6,260 ft).
  • Period of record: 1910 to 2026, 117 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

34 days at or beyond a record
Daily record high and record low at Arthur 4NW, with 2026 drawn through them The band shows the record high and record low for each calendar day at Arthur 4NW. The lines show the 2026 daily maximum and minimum. 34 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Arthur 4NW. The lines show the 2026 daily maximum and minimum. 34 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Arthur 4NW, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan17.8 C (64.0 F)-29.4 C (-20.9 F)12.2 C (54.0 F)-14.4 C (6.1 F)
Feb17.2 C (63.0 F)-28.3 C (-18.9 F)14.4 C (57.9 F)-17.2 C (1.0 F)
Mar25.6 C (78.1 F)-21.7 C (-7.1 F)25.6 C (78.1 F)-7.8 C (18.0 F)
Apr28.3 C (82.9 F)-15.0 C (5.0 F)21.7 C (71.1 F)-8.9 C (16.0 F)
May31.7 C (89.1 F)-10.6 C (12.9 F)28.9 C (84.0 F)-7.2 C (19.0 F)
Jun36.1 C (97.0 F)-5.0 C (23.0 F)32.8 C (91.0 F)-2.2 C (28.0 F)
Jul37.2 C (99.0 F)-3.3 C (26.1 F)36.7 C (98.1 F)6.1 C (43.0 F)
Aug36.7 C (98.1 F)-5.6 C (21.9 F)35.6 C (96.1 F)7.2 C (45.0 F)
Sep35.0 C (95.0 F)-8.9 C (16.0 F)n/an/a
Oct31.1 C (88.0 F)-18.9 C (-2.0 F)n/an/a
Nov21.1 C (70.0 F)-27.2 C (-17.0 F)n/an/a
Dec16.7 C (62.1 F)-32.2 C (-26.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Arthur 4NW by the year they were set 1,464 records at Arthur 4NW still stand. 2026 holds the most, with 45. 02040601963: 91964: 411965: 271966: 361967: 171968: 311969: 361970: 291971: 251972: 321973: 171974: 251975: 321976: 121977: 251978: 201979: 141980: 151981: 111982: 221983: 141984: 261985: 331986: 271987: 241988: 301989: 321990: 381991: 241992: 261993: 221994: 281995: 211996: 241997: 141998: 41999: 162000: 272001: 202002: 412003: 242004: 102005: 62006: 132007: 202008: 122009: 72010: 222011: 142012: 212013: 282014: 172015: 372016: 112017: 272018: 172019: 182020: 152021: 302022: 302023: 322024: 142025: 272026: 451963197019771984199119982005201220192026
1,464 records at Arthur 4NW still stand. 2026 holds the most, with 45.
Standing records at Arthur 4NW by the year they were set
Year setStanding records
19639
196441
196527
196636
196717
196831
196936
197029
197125
197232
197317
197425
197532
197612
197725
197820
197914
198015
198111
198222
198314
198426
198533
198627
198724
198830
198932
199038
199124
199226
199322
199428
199521
199624
199714
19984
199916
200027
200120
200241
200324
200410
20056
200613
200720
200812
20097
201022
201114
201221
201328
201417
201537
201611
201727
201817
201918
202015
202130
202230
202332
202414
202527
202645

All-Time Record Progression

3 new records
When Arthur 4NW set new all-time records 3 all-time records were set at Arthur 4NW between 30 July 2000 and 25 October 2010. Each dot is a new record. Record high maximum temperatureRecord daily precipitation30 July 2000: Record high maximum temperature 35.6 C (96.1 F)31 July 2000: Record high maximum temperature 37.2 C (99.0 F)25 October 2010: Record daily precipitation 72.4 mm (2.9 in)200020052010
3 all-time records were set at Arthur 4NW between 30 July 2000 and 25 October 2010. Each dot is a new record.
When Arthur 4NW set new all-time records
DateKindDetail
2000-07-30Record high maximum temperatureRecord high maximum temperature 35.6 C (96.1 F)
2000-07-31Record high maximum temperatureRecord high maximum temperature 37.2 C (99.0 F)
2010-10-25Record daily precipitationRecord daily precipitation 72.4 mm (2.9 in)

Wettest Day of Each Month

Oct: 72.4 mm (2.9 in)
Record daily precipitation for each month at Arthur 4NW The wettest day on record for each calendar month at Arthur 4NW. The most was 72.4 mm (2.9 in) on 25 October 2010. 020406080 Jan: 53.3 mm (2.1 in), 3 January 2002 Jan Feb: 51.1 mm (2.0 in), 18 February 2019 Feb Mar: 39.9 mm (1.6 in), 8 March 2019 Mar Apr: 47.8 mm (1.9 in), 18 April 2011 Apr May: 53.1 mm (2.1 in), 24 May 2019 May Jun: 52.8 mm (2.1 in), 1 June 1936 Jun Jul: 31.5 mm (1.2 in), 9 July 1970 Jul Aug: 35.3 mm (1.4 in), 8 August 1920 Aug Sep: 37.8 mm (1.5 in), 6 September 1978 Sep Oct: 72.4 mm (2.9 in), 25 October 2010 Oct Nov: 41.4 mm (1.6 in), 21 November 1950 Nov Dec: 68.6 mm (2.7 in), 18 December 1929 Dec
The wettest day on record for each calendar month at Arthur 4NW. The most was 72.4 mm (2.9 in) on 25 October 2010.
Record daily precipitation for each month at Arthur 4NW
MonthRecord daily precipitation (mm)Date
Jan53.3 mm (2.1 in)3 January 2002
Feb51.1 mm (2.0 in)18 February 2019
Mar39.9 mm (1.6 in)8 March 2019
Apr47.8 mm (1.9 in)18 April 2011
May53.1 mm (2.1 in)24 May 2019
Jun52.8 mm (2.1 in)1 June 1936
Jul31.5 mm (1.2 in)9 July 1970
Aug35.3 mm (1.4 in)8 August 1920
Sep37.8 mm (1.5 in)6 September 1978
Oct72.4 mm (2.9 in)25 October 2010
Nov41.4 mm (1.6 in)21 November 1950
Dec68.6 mm (2.7 in)18 December 1929

Period of Record Coverage

1925 to 2026
Days with data per year at Arthur 4NW 65 years of record at Arthur 4NW, 1925 to 2026. 15 years have data for under 90 percent of days and are left out of rankings: 1925, 1963, 1976, 1988, 1998, 2001, 2002, 2004 and others. 1925: 26 of 365 days1963: 160 of 365 days1964: 335 of 366 days1965: 364 of 365 days1966: 357 of 365 days1967: 364 of 365 days1968: 358 of 366 days1969: 349 of 365 days1970: 364 of 365 days1971: 363 of 365 days1972: 360 of 366 days1973: 360 of 365 days1974: 362 of 365 days1975: 334 of 365 days1976: 263 of 366 days1977: 364 of 365 days1978: 365 of 365 days1979: 359 of 365 days1980: 347 of 366 days1981: 346 of 365 days1982: 363 of 365 days1983: 364 of 365 days1984: 365 of 366 days1985: 364 of 365 days1986: 362 of 365 days1987: 365 of 365 days1988: 317 of 366 days1989: 362 of 365 days1990: 365 of 365 days1991: 364 of 365 days1992: 365 of 366 days1993: 364 of 365 days1994: 357 of 365 days1995: 345 of 365 days1996: 355 of 366 days1997: 351 of 365 days1998: 230 of 365 days1999: 346 of 365 days2000: 338 of 366 days2001: 309 of 365 days2002: 221 of 365 days2003: 349 of 365 days2004: 299 of 366 days2005: 301 of 365 days2006: 295 of 365 days2007: 271 of 365 days2008: 276 of 366 days2009: 317 of 365 days2010: 321 of 365 days2011: 365 of 365 days2012: 348 of 366 days2013: 362 of 365 days2014: 364 of 365 days2015: 364 of 365 days2016: 366 of 366 days2017: 364 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 349 of 366 days2021: 365 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 364 of 365 days2026: 243 of 365 days197019801990200020102020
65 years of record at Arthur 4NW, 1925 to 2026. 15 years have data for under 90 percent of days and are left out of rankings: 1925, 1963, 1976, 1988, 1998, 2001, 2002, 2004 and others.
Days with data per year at Arthur 4NW
YearDays with dataShare of yearComplete
1925267%No
196316044%No
196433592%Yes
1965364100%Yes
196635798%Yes
1967364100%Yes
196835898%Yes
196934996%Yes
1970364100%Yes
197136399%Yes
197236098%Yes
197336099%Yes
197436299%Yes
197533492%Yes
197626372%No
1977364100%Yes
1978365100%Yes
197935998%Yes
198034795%Yes
198134695%Yes
198236399%Yes
1983364100%Yes
1984365100%Yes
1985364100%Yes
198636299%Yes
1987365100%Yes
198831787%No
198936299%Yes
1990365100%Yes
1991364100%Yes
1992365100%Yes
1993364100%Yes
199435798%Yes
199534595%Yes
199635597%Yes
199735196%Yes
199823063%No
199934695%Yes
200033892%Yes
200130985%No
200222161%No
200334996%Yes
200429982%No
200530182%No
200629581%No
200727174%No
200827675%No
200931787%No
201032188%No
2011365100%Yes
201234895%Yes
201336299%Yes
2014364100%Yes
2015364100%Yes
2016366100%Yes
2017364100%Yes
2018365100%Yes
2019365100%Yes
202034995%Yes
2021365100%Yes
2022365100%Yes
2023365100%Yes
2024366100%Yes
2025364100%Yes
202624367%No

Latest Records

20
Latest records at Arthur 4NW
DateStationRecordValueBeat old record byOld record stoodSignificance
26 August 2026Arthur 4NW, USdaily high max (Tie, Provisional)32.8 C (91.0 F)tie56 years6 of 100 (Routine)
21 August 2026Arthur 4NW, USdaily high max (Provisional)35.0 C (95.0 F)1.1 C (2.0 F)16 years18 of 100 (Routine)
20 August 2026Arthur 4NW, USdaily high max (Provisional)35.6 C (96.1 F)2.8 C (5.0 F)0 years18 of 100 (Routine)
20 August 2026Arthur 4NW, USdaily high min (Tie, Provisional)13.9 C (57.0 F)tie39 years4 of 100 (Routine)
19 August 2026Arthur 4NW, USdaily high max (Provisional)33.3 C (91.9 F)0.5 C (0.9 F)5 years12 of 100 (Routine)
13 August 2026Arthur 4NW, USdaily low max18.9 C (66.0 F)1.1 C (2.0 F)48 years27 of 100 (Routine)
8 August 2026Arthur 4NW, USdaily high max35.0 C (95.0 F)2.2 C (4.0 F)36 years26 of 100 (Routine)
7 August 2026Arthur 4NW, USdaily high max35.6 C (96.1 F)1.7 C (3.1 F)13 years19 of 100 (Routine)
6 August 2026Arthur 4NW, USdaily high max34.4 C (93.9 F)1.6 C (2.9 F)32 years23 of 100 (Routine)
27 July 2026Arthur 4NW, USdaily high max (Tie)33.9 C (93.0 F)tie32 years4 of 100 (Routine)
26 July 2026Arthur 4NW, USdaily high min17.8 C (64.0 F)3.4 C (6.1 F)36 years28 of 100 (Routine)
25 July 2026Arthur 4NW, USdaily high max35.0 C (95.0 F)1.1 C (2.0 F)32 years22 of 100 (Routine)
24 July 2026Arthur 4NW, USdaily high max34.4 C (93.9 F)0.5 C (0.9 F)20 years17 of 100 (Routine)
20 July 2026Arthur 4NW, USdaily high min18.9 C (66.0 F)3.3 C (5.9 F)36 years27 of 100 (Routine)
19 July 2026Arthur 4NW, USdaily high max34.4 C (93.9 F)0.5 C (0.9 F)57 years28 of 100 (Routine)
15 July 2026Arthur 4NW, USdaily high min (Tie)15.6 C (60.1 F)tie19 years2 of 100 (Routine)
14 July 2026Arthur 4NW, USdaily high min17.2 C (63.0 F)1.1 C (2.0 F)36 years19 of 100 (Routine)
13 July 2026Arthur 4NW, USdaily high max35.0 C (95.0 F)1.1 C (2.0 F)24 years20 of 100 (Routine)
12 July 2026Arthur 4NW, USdaily high max36.1 C (97.0 F)1.1 C (2.0 F)13 years17 of 100 (Routine)
29 June 2026Arthur 4NW, USdaily low min (Tie)0.6 C (33.1 F)tie56 years5 of 100 (Routine)

Climate Trend

44 complete years, 1965 to 2025
Annual mean temperature at Arthur 4NW as warming stripes, 1965 to 2025 One stripe for each of 44 complete years at Arthur 4NW, 1965 to 2025. Blue stripes are years cooler than the station's own mean of 6.9 C (44.4 F); red stripes are warmer. The coolest year was 1984, at 5.1 C (41.2 F), and the warmest was 2025, at 8.6 C (47.6 F). The strongest colour marks a difference of 1.8 C (3.2 F). 1965: 6.5 C, -0.4 C from the station mean1966: 6.7 C, -0.2 C from the station mean1967: 6.8 C, -0.1 C from the station mean1968: 7.0 C, +0.1 C from the station mean1970: 6.5 C, -0.4 C from the station mean1971: 6.4 C, -0.5 C from the station mean1972: 6.8 C, -0.1 C from the station mean1973: 6.7 C, -0.2 C from the station mean1974: 7.2 C, +0.3 C from the station mean1977: 6.8 C, -0.1 C from the station mean1978: 6.0 C, -0.9 C from the station mean1979: 6.3 C, -0.6 C from the station mean1980: 7.1 C, +0.2 C from the station mean1982: 5.4 C, -1.5 C from the station mean1983: 6.1 C, -0.8 C from the station mean1984: 5.1 C, -1.8 C from the station mean1985: 5.6 C, -1.2 C from the station mean1986: 7.6 C, +0.7 C from the station mean1987: 7.5 C, +0.6 C from the station mean1989: 7.0 C, +0.1 C from the station mean1990: 7.1 C, +0.2 C from the station mean1991: 7.0 C, +0.1 C from the station mean1992: 7.7 C, +0.8 C from the station mean1993: 5.2 C, -1.7 C from the station mean1994: 7.0 C, +0.1 C from the station mean1995: 6.9 C, 0.0 C from the station mean1996: 7.2 C, +0.3 C from the station mean1997: 6.8 C, -0.1 C from the station mean1999: 7.2 C, +0.3 C from the station mean2000: 7.5 C, +0.6 C from the station mean2003: 8.0 C, +1.1 C from the station mean2011: 6.1 C, -0.7 C from the station mean2013: 6.7 C, -0.2 C from the station mean2014: 7.9 C, +1.0 C from the station mean2015: 8.3 C, +1.4 C from the station mean2016: 7.4 C, +0.5 C from the station mean2017: 7.6 C, +0.7 C from the station mean2018: 7.6 C, +0.7 C from the station mean2019: 6.0 C, -0.9 C from the station mean2021: 7.7 C, +0.9 C from the station mean2022: 6.9 C, +0.1 C from the station mean2023: 5.6 C, -1.2 C from the station mean2024: 8.0 C, +1.1 C from the station mean2025: 8.6 C, +1.8 C from the station mean1965197019801990200020102020
One stripe for each of 44 complete years at Arthur 4NW, 1965 to 2025. Blue stripes are years cooler than the station's own mean of 6.9 C (44.4 F); red stripes are warmer. The coolest year was 1984, at 5.1 C (41.2 F), and the warmest was 2025, at 8.6 C (47.6 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Arthur 4NW as warming stripes, 1965 to 2025
YearAnnual mean temperatureDifference from the station mean
19656.5 C-0.40 C
19666.7 C-0.20 C
19676.8 C-0.07 C
19687.0 C+0.10 C
19706.5 C-0.39 C
19716.4 C-0.47 C
19726.8 C-0.05 C
19736.7 C-0.21 C
19747.2 C+0.33 C
19776.8 C-0.06 C
19786.0 C-0.93 C
19796.3 C-0.61 C
19807.1 C+0.17 C
19825.4 C-1.53 C
19836.1 C-0.80 C
19845.1 C-1.76 C
19855.6 C-1.24 C
19867.6 C+0.73 C
19877.5 C+0.57 C
19897.0 C+0.09 C
19907.1 C+0.21 C
19917.0 C+0.14 C
19927.7 C+0.77 C
19935.2 C-1.65 C
19947.0 C+0.12 C
19956.9 C+0.04 C
19967.2 C+0.27 C
19976.8 C-0.09 C
19997.2 C+0.35 C
20007.5 C+0.62 C
20038.0 C+1.10 C
20116.1 C-0.74 C
20136.7 C-0.22 C
20147.9 C+1.00 C
20158.3 C+1.38 C
20167.4 C+0.50 C
20177.6 C+0.70 C
20187.6 C+0.70 C
20196.0 C-0.92 C
20217.7 C+0.86 C
20226.9 C+0.06 C
20235.6 C-1.24 C
20248.0 C+1.09 C
20258.6 C+1.76 C

The annual mean temperature here has risen by 0.16 C (0.04 to 0.29) per decade over 1965 to 2025. In Fahrenheit: 0.3 F (0.1 to 0.5) per decade. The slope is a straight line fitted to 44 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Arthur 4NW
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.16 C (0.04 to 0.29) per decade0.3 F (0.1 to 0.5) per decade1965 to 202544Rise
Mean daily maximum0.14 C (-0.02 to 0.31) per decade0.25 F (-0.04 to 0.55) per decade1965 to 202544Not clearly different from zero
Mean daily minimum0.2 C (0.1 to 0.3) per decade0.3 F (0.1 to 0.6) per decade1965 to 202544Rise

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

1910 to 2026
Yearly extremes at Arthur 4NW: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)37.2 C (99.0 F)200033.3 C (91.9 F)65
Coldest night (TNn)-32.2 C (-26.0 F)1990-22.8 C (-9.0 F)64
Wettest day (Rx1day)72.4 mm (2.9 in)201025.7 mm (1.0 in)116
Wettest five days (Rx5day)103.3 mm (4.1 in)196444.1 mm (1.7 in)116
Longest dry spell (CDD)92 days191142 days116

Hottest day (TXx)

Hottest day (TXx) at Arthur 4NW by year The hottest day of the year at Arthur 4NW, 1910 to 2026. The record is 37.2 C (99.0 F) in 2000, marked on the chart; the median year is 33.3 C (91.9 F). 25303540192019401960198020002020Record: 37.2 C (99.0 F) in 2000
The hottest day of the year at Arthur 4NW, 1910 to 2026. The record is 37.2 C (99.0 F) in 2000, marked on the chart; the median year is 33.3 C (91.9 F).
Hottest day (TXx) at Arthur 4NW by year
YearHottest day (TXx)
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
192526.7 C (80.1 F)
1926n/a
1927n/a
1928n/a
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
1934n/a
1935n/a
1936n/a
1937n/a
1938n/a
1939n/a
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
196333.3 C (91.9 F)
196433.3 C (91.9 F)
196532.2 C (90.0 F)
196633.9 C (93.0 F)
196733.3 C (91.9 F)
196833.9 C (93.0 F)
196935.0 C (95.0 F)
197032.8 C (91.0 F)
197133.3 C (91.9 F)
197234.4 C (93.9 F)
197334.4 C (93.9 F)
197433.3 C (91.9 F)
197533.3 C (91.9 F)
197631.7 C (89.1 F)
197732.8 C (91.0 F)
197832.8 C (91.0 F)
197931.7 C (89.1 F)
198032.2 C (90.0 F)
198132.2 C (90.0 F)
198231.7 C (89.1 F)
198332.2 C (90.0 F)
198430.6 C (87.1 F)
198533.3 C (91.9 F)
198631.1 C (88.0 F)
198731.7 C (89.1 F)
198833.3 C (91.9 F)
198932.8 C (91.0 F)
199032.8 C (91.0 F)
199132.2 C (90.0 F)
199233.9 C (93.0 F)
199333.3 C (91.9 F)
199435.0 C (95.0 F)
199535.0 C (95.0 F)
199634.4 C (93.9 F)
199731.1 C (88.0 F)
199833.9 C (93.0 F)
199931.7 C (89.1 F)
200037.2 C (99.0 F)
200135.0 C (95.0 F)
200233.9 C (93.0 F)
200336.7 C (98.1 F)
200432.2 C (90.0 F)
200533.9 C (93.0 F)
200633.9 C (93.0 F)
200735.6 C (96.1 F)
200832.2 C (90.0 F)
200933.9 C (93.0 F)
201033.3 C (91.9 F)
201131.7 C (89.1 F)
201235.0 C (95.0 F)
201336.1 C (97.0 F)
201435.6 C (96.1 F)
201535.0 C (95.0 F)
201634.4 C (93.9 F)
201733.3 C (91.9 F)
201834.4 C (93.9 F)
201932.2 C (90.0 F)
202035.6 C (96.1 F)
202135.0 C (95.0 F)
202235.0 C (95.0 F)
202333.9 C (93.0 F)
202435.0 C (95.0 F)
202533.9 C (93.0 F)
202636.7 C (98.1 F)

Coldest night (TNn)

Coldest night (TNn) at Arthur 4NW by year The coldest night of the year at Arthur 4NW, 1910 to 2026. The record is -32.2 C (-26.0 F) in 1990, marked on the chart; the median year is -22.8 C (-9.0 F). -35-30-25-20-15192019401960198020002020Record: -32.2 C (-26.0 F) in 1990
The coldest night of the year at Arthur 4NW, 1910 to 2026. The record is -32.2 C (-26.0 F) in 1990, marked on the chart; the median year is -22.8 C (-9.0 F).
Coldest night (TNn) at Arthur 4NW by year
YearColdest night (TNn)
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
1934n/a
1935n/a
1936n/a
1937n/a
1938n/a
1939n/a
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1963-21.1 C (-6.0 F)
1964-27.2 C (-17.0 F)
1965-26.1 C (-15.0 F)
1966-23.3 C (-9.9 F)
1967-20.6 C (-5.1 F)
1968-22.8 C (-9.0 F)
1969-21.1 C (-6.0 F)
1970-26.1 C (-15.0 F)
1971-24.4 C (-11.9 F)
1972-27.8 C (-18.0 F)
1973-20.0 C (-4.0 F)
1974-22.8 C (-9.0 F)
1975-23.3 C (-9.9 F)
1976-19.4 C (-2.9 F)
1977-23.3 C (-9.9 F)
1978-23.9 C (-11.0 F)
1979-28.9 C (-20.0 F)
1980-25.6 C (-14.1 F)
1981-16.1 C (3.0 F)
1982-26.7 C (-16.1 F)
1983-23.9 C (-11.0 F)
1984-27.2 C (-17.0 F)
1985-23.9 C (-11.0 F)
1986-19.4 C (-2.9 F)
1987-22.2 C (-8.0 F)
1988-26.7 C (-16.1 F)
1989-28.3 C (-18.9 F)
1990-32.2 C (-26.0 F)
1991-19.4 C (-2.9 F)
1992-21.1 C (-6.0 F)
1993-26.1 C (-15.0 F)
1994-21.1 C (-6.0 F)
1995-22.8 C (-9.0 F)
1996-22.2 C (-8.0 F)
1997-24.4 C (-11.9 F)
1998-21.7 C (-7.1 F)
1999-20.0 C (-4.0 F)
2000-17.8 C (0.0 F)
2001-23.9 C (-11.0 F)
2002-27.8 C (-18.0 F)
2003-17.8 C (0.0 F)
2004-21.1 C (-6.0 F)
2005-17.8 C (0.0 F)
2006-21.1 C (-6.0 F)
2007-22.2 C (-8.0 F)
2008-21.7 C (-7.1 F)
2009-22.8 C (-9.0 F)
2010-26.7 C (-16.1 F)
2011-24.4 C (-11.9 F)
2012-23.9 C (-11.0 F)
2013-23.3 C (-9.9 F)
2014-26.7 C (-16.1 F)
2015-28.9 C (-20.0 F)
2016-22.8 C (-9.0 F)
2017-29.4 C (-20.9 F)
2018-21.7 C (-7.1 F)
2019-21.1 C (-6.0 F)
2020-17.8 C (0.0 F)
2021-19.4 C (-2.9 F)
2022-25.6 C (-14.1 F)
2023-27.2 C (-17.0 F)
2024-17.2 C (1.0 F)
2025-17.8 C (0.0 F)
2026-17.2 C (1.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Arthur 4NW by year The wettest day of the year at Arthur 4NW, 1910 to 2026. The record is 72.4 mm (2.9 in) in 2010, marked on the chart; the median year is 25.7 mm (1.0 in). 020406080192019401960198020002020Record: 72.4 mm (2.9 in) in 2010
The wettest day of the year at Arthur 4NW, 1910 to 2026. The record is 72.4 mm (2.9 in) in 2010, marked on the chart; the median year is 25.7 mm (1.0 in).
Wettest day (Rx1day) at Arthur 4NW by year
YearWettest day (Rx1day)
191025.4 mm (1.0 in)
191129.0 mm (1.1 in)
191233.0 mm (1.3 in)
191326.4 mm (1.0 in)
191425.4 mm (1.0 in)
191520.3 mm (0.8 in)
191623.6 mm (0.9 in)
191735.3 mm (1.4 in)
191817.0 mm (0.7 in)
191927.9 mm (1.1 in)
192035.3 mm (1.4 in)
192122.6 mm (0.9 in)
192228.4 mm (1.1 in)
192318.3 mm (0.7 in)
192418.8 mm (0.7 in)
192524.9 mm (1.0 in)
192625.4 mm (1.0 in)
192722.9 mm (0.9 in)
192823.6 mm (0.9 in)
192968.6 mm (2.7 in)
193032.5 mm (1.3 in)
193122.6 mm (0.9 in)
193221.3 mm (0.8 in)
193324.9 mm (1.0 in)
193424.9 mm (1.0 in)
193519.3 mm (0.8 in)
193652.8 mm (2.1 in)
193725.4 mm (1.0 in)
193822.4 mm (0.9 in)
193915.5 mm (0.6 in)
194019.8 mm (0.8 in)
194135.6 mm (1.4 in)
194210.2 mm (0.4 in)
194327.4 mm (1.1 in)
194436.8 mm (1.4 in)
194519.1 mm (0.8 in)
194635.1 mm (1.4 in)
194727.9 mm (1.1 in)
194832.3 mm (1.3 in)
194922.6 mm (0.9 in)
195041.4 mm (1.6 in)
195129.2 mm (1.1 in)
195220.3 mm (0.8 in)
195333.5 mm (1.3 in)
195415.7 mm (0.6 in)
195530.5 mm (1.2 in)
195622.9 mm (0.9 in)
195721.6 mm (0.9 in)
195822.9 mm (0.9 in)
195926.7 mm (1.1 in)
196016.0 mm (0.6 in)
196113.7 mm (0.5 in)
196320.3 mm (0.8 in)
196457.7 mm (2.3 in)
196531.8 mm (1.3 in)
196623.1 mm (0.9 in)
196726.4 mm (1.0 in)
196829.2 mm (1.1 in)
196933.3 mm (1.3 in)
197031.5 mm (1.2 in)
197145.7 mm (1.8 in)
197226.4 mm (1.0 in)
197318.5 mm (0.7 in)
197418.8 mm (0.7 in)
197527.7 mm (1.1 in)
197619.1 mm (0.8 in)
197725.9 mm (1.0 in)
197837.8 mm (1.5 in)
197942.2 mm (1.7 in)
198032.0 mm (1.3 in)
198120.1 mm (0.8 in)
198230.5 mm (1.2 in)
198326.9 mm (1.1 in)
198430.5 mm (1.2 in)
198521.3 mm (0.8 in)
198638.9 mm (1.5 in)
198718.0 mm (0.7 in)
198817.3 mm (0.7 in)
198916.8 mm (0.7 in)
199021.1 mm (0.8 in)
199117.5 mm (0.7 in)
199224.6 mm (1.0 in)
199325.4 mm (1.0 in)
199437.1 mm (1.5 in)
199535.8 mm (1.4 in)
199649.5 mm (1.9 in)
199721.6 mm (0.9 in)
199818.5 mm (0.7 in)
199926.7 mm (1.1 in)
200038.1 mm (1.5 in)
200125.1 mm (1.0 in)
200253.3 mm (2.1 in)
200316.8 mm (0.7 in)
200424.6 mm (1.0 in)
200522.1 mm (0.9 in)
200632.0 mm (1.3 in)
200720.8 mm (0.8 in)
200829.2 mm (1.1 in)
200922.9 mm (0.9 in)
201072.4 mm (2.9 in)
201147.8 mm (1.9 in)
201218.3 mm (0.7 in)
201322.6 mm (0.9 in)
201433.8 mm (1.3 in)
201539.1 mm (1.5 in)
201637.3 mm (1.5 in)
201733.0 mm (1.3 in)
201821.6 mm (0.9 in)
201953.1 mm (2.1 in)
202038.1 mm (1.5 in)
202120.3 mm (0.8 in)
202250.8 mm (2.0 in)
202329.2 mm (1.1 in)
202418.3 mm (0.7 in)
202532.5 mm (1.3 in)
202630.2 mm (1.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Arthur 4NW by year The wettest five days of the year at Arthur 4NW, 1910 to 2026. The record is 103.3 mm (4.1 in) in 1964, marked on the chart; the median year is 44.1 mm (1.7 in). 0255075100125192019401960198020002020Record: 103.3 mm (4.1 in) in 1964
The wettest five days of the year at Arthur 4NW, 1910 to 2026. The record is 103.3 mm (4.1 in) in 1964, marked on the chart; the median year is 44.1 mm (1.7 in).
Wettest five days (Rx5day) at Arthur 4NW by year
YearWettest five days (Rx5day)
191025.4 mm (1.0 in)
191135.6 mm (1.4 in)
191263.5 mm (2.5 in)
191344.4 mm (1.7 in)
191438.1 mm (1.5 in)
191548.3 mm (1.9 in)
191646.9 mm (1.8 in)
191750.5 mm (2.0 in)
191837.6 mm (1.5 in)
191948.0 mm (1.9 in)
192044.3 mm (1.7 in)
192154.9 mm (2.2 in)
192239.9 mm (1.6 in)
192337.1 mm (1.5 in)
192443.7 mm (1.7 in)
192556.6 mm (2.2 in)
192633.0 mm (1.3 in)
192745.5 mm (1.8 in)
192851.3 mm (2.0 in)
192968.6 mm (2.7 in)
193058.6 mm (2.3 in)
193141.2 mm (1.6 in)
193253.0 mm (2.1 in)
193371.0 mm (2.8 in)
193444.2 mm (1.7 in)
193533.8 mm (1.3 in)
193684.8 mm (3.3 in)
193740.7 mm (1.6 in)
193840.6 mm (1.6 in)
193942.2 mm (1.7 in)
194060.0 mm (2.4 in)
194146.2 mm (1.8 in)
194226.6 mm (1.0 in)
194373.5 mm (2.9 in)
194474.8 mm (2.9 in)
194535.3 mm (1.4 in)
194652.1 mm (2.1 in)
194728.9 mm (1.1 in)
194835.5 mm (1.4 in)
194941.6 mm (1.6 in)
195095.3 mm (3.8 in)
195141.6 mm (1.6 in)
195251.0 mm (2.0 in)
195342.7 mm (1.7 in)
195416.8 mm (0.7 in)
195553.3 mm (2.1 in)
195657.3 mm (2.3 in)
195760.2 mm (2.4 in)
195827.9 mm (1.1 in)
195942.5 mm (1.7 in)
196027.8 mm (1.1 in)
196114.4 mm (0.6 in)
196330.7 mm (1.2 in)
1964103.3 mm (4.1 in)
196541.5 mm (1.6 in)
196659.8 mm (2.4 in)
196734.9 mm (1.4 in)
196839.9 mm (1.6 in)
196964.0 mm (2.5 in)
197047.3 mm (1.9 in)
197175.0 mm (3.0 in)
197234.5 mm (1.4 in)
197325.9 mm (1.0 in)
197434.0 mm (1.3 in)
197543.9 mm (1.7 in)
197639.4 mm (1.6 in)
197741.6 mm (1.6 in)
197863.9 mm (2.5 in)
197962.8 mm (2.5 in)
198072.4 mm (2.9 in)
198148.1 mm (1.9 in)
198266.6 mm (2.6 in)
198360.4 mm (2.4 in)
198439.7 mm (1.6 in)
198531.9 mm (1.3 in)
198670.1 mm (2.8 in)
198749.0 mm (1.9 in)
198833.5 mm (1.3 in)
198939.7 mm (1.6 in)
199033.6 mm (1.3 in)
199133.0 mm (1.3 in)
199249.0 mm (1.9 in)
199348.3 mm (1.9 in)
199475.5 mm (3.0 in)
199544.9 mm (1.8 in)
199658.4 mm (2.3 in)
199731.6 mm (1.2 in)
199846.8 mm (1.8 in)
199934.8 mm (1.4 in)
200039.6 mm (1.6 in)
200133.5 mm (1.3 in)
200257.9 mm (2.3 in)
200334.1 mm (1.3 in)
200436.8 mm (1.4 in)
200549.0 mm (1.9 in)
200642.2 mm (1.7 in)
200732.2 mm (1.3 in)
200830.5 mm (1.2 in)
200934.1 mm (1.3 in)
201072.4 mm (2.9 in)
201153.6 mm (2.1 in)
201230.0 mm (1.2 in)
201330.0 mm (1.2 in)
201468.9 mm (2.7 in)
201539.1 mm (1.5 in)
201648.7 mm (1.9 in)
201742.4 mm (1.7 in)
201825.4 mm (1.0 in)
201951.1 mm (2.0 in)
202052.1 mm (2.1 in)
202128.7 mm (1.1 in)
202276.5 mm (3.0 in)
202379.3 mm (3.1 in)
202449.7 mm (2.0 in)
202553.3 mm (2.1 in)
202643.7 mm (1.7 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Arthur 4NW by year The longest dry spell of the year at Arthur 4NW, 1910 to 2026. The record is 92 days in 1911, marked on the chart; the median year is 42 days. 020406080100192019401960198020002020Record: 92 days in 1911
The longest dry spell of the year at Arthur 4NW, 1910 to 2026. The record is 92 days in 1911, marked on the chart; the median year is 42 days.
Longest dry spell (CDD) at Arthur 4NW by year
YearLongest dry spell (CDD)
191017 days
191192 days
191234 days
191337 days
191445 days
191580 days
191668 days
191744 days
191842 days
191963 days
192047 days
192173 days
192248 days
192330 days
192460 days
192522 days
192650 days
192724 days
192874 days
192960 days
193048 days
193136 days
193243 days
193351 days
193439 days
193586 days
193646 days
193757 days
193836 days
193923 days
194047 days
194131 days
194277 days
194342 days
194488 days
194516 days
194636 days
194738 days
194844 days
194934 days
195022 days
195150 days
195262 days
195337 days
195488 days
195523 days
195655 days
195741 days
195825 days
195938 days
196013 days
196131 days
196321 days
196457 days
196527 days
196629 days
196732 days
196830 days
196930 days
197018 days
197133 days
197237 days
197326 days
197457 days
197523 days
197647 days
197736 days
197855 days
197938 days
198044 days
198142 days
198226 days
198327 days
198434 days
198535 days
198639 days
198762 days
198844 days
198942 days
199023 days
199142 days
199258 days
199342 days
199459 days
199540 days
199649 days
199727 days
199827 days
199964 days
200068 days
200147 days
200263 days
200340 days
200427 days
200549 days
200642 days
200732 days
200839 days
200929 days
201045 days
201142 days
201229 days
201331 days
201437 days
201537 days
201653 days
201747 days
201853 days
201957 days
202034 days
202135 days
202247 days
202334 days
202443 days
202554 days
202640 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

44 years with a frost

Across 44 years with a frost, the median last spring frost at Arthur 4NW falls on 6 June and the median first autumn frost on 13 September, which leaves a median of 97 days between them.

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

Frost dates and growing season at Arthur 4NW
MeasureMedian, all yearsEarliest periodRecent period (1983 to 2025)Recent against earliestFitted trend
Last spring frost6 Junen/a8 Junen/a+0.2 days per decade
First autumn frost13 Septembern/a19 Septembern/a+4.9 days per decade
Growing days97 daysn/a106 daysn/a+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, 1911 to 2025

A day with at least 26.4 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 62.6 mm (2.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Arthur 4NW: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years26.4 mm (1.0 in)
5 years35.1 mm (1.4 in)
10 years41.2 mm (1.6 in)
25 years49.4 mm (1.9 in)
50 years55.9 mm (2.2 in)
100 years62.6 mm (2.5 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 1911 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: 68.6 mm (2.7 in) in 1929; 57.7 mm (2.3 in) in 1964; 53.1 mm (2.1 in) in 2019.

Station Changes

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

Climate Twins

2000 to 2025 against 1961 to 1990

Over 2000 to 2025, Arthur 4NW had a mean temperature of 7.3 C (45.2 F) and 335.6 mm (13.2 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Archer (United States, 884 km away), Cheyenne (United States, 872 km away) and Ely AP (United States, 168 km away).

Climate twins of Arthur 4NW: stations whose 1961 to 1990 climate is closest to its 2000 to 2025 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
ArcherUnited States884 km (549 mi)7.6 C (45.6 F)405.8 mm (16.0 in)0.66
CheyenneUnited States872 km (542 mi)7.6 C (45.7 F)366.3 mm (14.4 in)0.66
Ely APUnited States168 km (104 mi)7.0 C (44.6 F)257.9 mm (10.2 in)0.70

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 Arthur 4NW standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Arthur 4NW 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).