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W Allis Weather Records (USC00479046)

Record envelope, standing records and threshold days for W Allis (USC00479046), Wisconsin, United States, with 76 years of record.

Key Facts for W Allis

  • W Allis (USC00479046) is a weather station in Wisconsin, United States at 43.00 latitude and -88.02 longitude, 236 m (773 ft) above sea level.
  • The station reports from 1951 to 2026, 76 years of record.
  • 1,464 records set at W Allis still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • W Allis set a daily record high maximum temperature of 31.7 C (89.1 F) on 13 October 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Wisconsin, United States, 43.00 latitude, -88.02 longitude.
  • Elevation: 236 m (773 ft).
  • Period of record: 1951 to 2026, 76 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

18 days at or beyond a record
Daily record high and record low at W Allis, with 2026 drawn through them The band shows the record high and record low for each calendar day at W Allis. The lines show the 2026 daily maximum and minimum. 18 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 W Allis. The lines show the 2026 daily maximum and minimum. 18 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at W Allis, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan14.4 C (57.9 F)-32.2 C (-26.0 F)14.4 C (57.9 F)-26.7 C (-16.1 F)
Feb22.8 C (73.0 F)-26.1 C (-15.0 F)17.8 C (64.0 F)-15.0 C (5.0 F)
Mar27.8 C (82.0 F)-24.4 C (-11.9 F)26.7 C (80.1 F)-13.3 C (8.1 F)
Apr33.3 C (91.9 F)-10.6 C (12.9 F)28.3 C (82.9 F)-5.0 C (23.0 F)
May35.0 C (95.0 F)-3.3 C (26.1 F)31.7 C (89.1 F)-1.1 C (30.0 F)
Jun38.9 C (102.0 F)2.2 C (36.0 F)34.4 C (93.9 F)8.3 C (46.9 F)
Jul40.0 C (104.0 F)3.3 C (37.9 F)40.0 C (104.0 F)12.2 C (54.0 F)
Aug38.3 C (100.9 F)5.0 C (41.0 F)31.1 C (88.0 F)10.6 C (51.1 F)
Sep37.2 C (99.0 F)0.0 C (32.0 F)32.8 C (91.0 F)7.2 C (45.0 F)
Oct32.8 C (91.0 F)-6.7 C (19.9 F)31.7 C (89.1 F)4.4 C (39.9 F)
Nov23.9 C (75.0 F)-21.1 C (-6.0 F)n/an/a
Dec21.1 C (70.0 F)-29.4 C (-20.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at W Allis by the year they were set 1,464 records at W Allis still stand. 1963 holds the most, with 53. 02040601951: 181952: 291953: 331954: 241955: 381956: 251957: 221958: 291959: 311960: 271961: 171962: 421963: 531964: 431965: 501966: 361967: 301968: 371969: 261970: 221971: 281972: 311973: 271974: 311975: 261976: 321977: 321978: 171979: 311980: 211981: 231982: 281983: 371984: 211985: 321986: 251987: 251999: 132000: 272001: 232002: 302003: 222004: 182005: 232006: 222007: 312008: 162009: 272010: 282023: 152024: 262025: 262026: 18195119571963196919751981198720042010
1,464 records at W Allis still stand. 1963 holds the most, with 53.
Standing records at W Allis by the year they were set
Year setStanding records
195118
195229
195333
195424
195538
195625
195722
195829
195931
196027
196117
196242
196353
196443
196550
196636
196730
196837
196926
197022
197128
197231
197327
197431
197526
197632
197732
197817
197931
198021
198123
198228
198337
198421
198532
198625
198725
199913
200027
200123
200230
200322
200418
200523
200622
200731
200816
200927
201028
202315
202426
202526
202618

All-Time Record Progression

5 new records
When W Allis set new all-time records 5 all-time records were set at W Allis between 20 January 1985 and 15 July 2026. Each dot is a new record. Record low minimum temperatureRecord daily precipitationRecord high maximum temperature20 January 1985: Record low minimum temperature -32.2 C (-26.0 F)10 July 2006: Record daily precipitation 93.7 mm (3.7 in)8 June 2008: Record daily precipitation 115.6 mm (4.6 in)10 August 2025: Record daily precipitation 222.5 mm (8.8 in)15 July 2026: Record high maximum temperature 40.0 C (104.0 F)1990200020102020
5 all-time records were set at W Allis between 20 January 1985 and 15 July 2026. Each dot is a new record.
When W Allis set new all-time records
DateKindDetail
1985-01-20Record low minimum temperatureRecord low minimum temperature -32.2 C (-26.0 F)
2006-07-10Record daily precipitationRecord daily precipitation 93.7 mm (3.7 in)
2008-06-08Record daily precipitationRecord daily precipitation 115.6 mm (4.6 in)
2025-08-10Record daily precipitationRecord daily precipitation 222.5 mm (8.8 in)
2026-07-15Record high maximum temperatureRecord high maximum temperature 40.0 C (104.0 F)

Wettest Day of Each Month

Aug: 222.5 mm (8.8 in)
Record daily precipitation for each month at W Allis The wettest day on record for each calendar month at W Allis. The most was 222.5 mm (8.8 in) on 10 August 2025. 0100200300 Jan: 57.7 mm (2.3 in), 13 January 2024 Jan Feb: 78.2 mm (3.1 in), 5 February 1986 Feb Mar: 49.5 mm (1.9 in), 16 March 2026 Mar Apr: 89.4 mm (3.5 in), 21 April 1973 Apr May: 59.9 mm (2.4 in), 22 May 2004 May Jun: 115.6 mm (4.6 in), 8 June 2008 Jun Jul: 93.7 mm (3.7 in), 10 July 2006 Jul Aug: 222.5 mm (8.8 in), 10 August 2025 Aug Sep: 78.7 mm (3.1 in), 12 September 2000 Sep Oct: 71.1 mm (2.8 in), 21 October 1965 Oct Nov: 49.5 mm (1.9 in), 1 November 1985 Nov Dec: 65.0 mm (2.6 in), 2 December 1982 Dec
The wettest day on record for each calendar month at W Allis. The most was 222.5 mm (8.8 in) on 10 August 2025.
Record daily precipitation for each month at W Allis
MonthRecord daily precipitation (mm)Date
Jan57.7 mm (2.3 in)13 January 2024
Feb78.2 mm (3.1 in)5 February 1986
Mar49.5 mm (1.9 in)16 March 2026
Apr89.4 mm (3.5 in)21 April 1973
May59.9 mm (2.4 in)22 May 2004
Jun115.6 mm (4.6 in)8 June 2008
Jul93.7 mm (3.7 in)10 July 2006
Aug222.5 mm (8.8 in)10 August 2025
Sep78.7 mm (3.1 in)12 September 2000
Oct71.1 mm (2.8 in)21 October 1965
Nov49.5 mm (1.9 in)1 November 1985
Dec65.0 mm (2.6 in)2 December 1982

Period of Record Coverage

1951 to 2026
Days with data per year at W Allis 53 years of record at W Allis, 1951 to 2026. 4 years have data for under 90 percent of days and are left out of rankings: 1951, 1987, 2023, 2026. 1951: 92 of 365 days1952: 365 of 366 days1953: 365 of 365 days1954: 365 of 365 days1955: 365 of 365 days1956: 365 of 366 days1957: 365 of 365 days1958: 365 of 365 days1959: 365 of 365 days1960: 366 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 355 of 366 days1965: 365 of 365 days1966: 363 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 364 of 365 days1970: 364 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 364 of 365 days1975: 362 of 365 days1976: 366 of 366 days1977: 361 of 365 days1978: 364 of 365 days1979: 363 of 365 days1980: 364 of 366 days1981: 362 of 365 days1982: 356 of 365 days1983: 361 of 365 days1984: 356 of 366 days1985: 358 of 365 days1986: 364 of 365 days1987: 297 of 365 days1999: 332 of 365 days2000: 335 of 366 days2001: 365 of 365 days2002: 363 of 365 days2003: 363 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 364 of 365 days2008: 366 of 366 days2009: 363 of 365 days2010: 340 of 365 days2023: 238 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 287 of 365 days19601970198020002010
53 years of record at W Allis, 1951 to 2026. 4 years have data for under 90 percent of days and are left out of rankings: 1951, 1987, 2023, 2026.
Days with data per year at W Allis
YearDays with dataShare of yearComplete
19519225%No
1952365100%Yes
1953365100%Yes
1954365100%Yes
1955365100%Yes
1956365100%Yes
1957365100%Yes
1958365100%Yes
1959365100%Yes
1960366100%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
196435597%Yes
1965365100%Yes
196636399%Yes
1967365100%Yes
1968366100%Yes
1969364100%Yes
1970364100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974364100%Yes
197536299%Yes
1976366100%Yes
197736199%Yes
1978364100%Yes
197936399%Yes
198036499%Yes
198136299%Yes
198235698%Yes
198336199%Yes
198435697%Yes
198535898%Yes
1986364100%Yes
198729781%No
199933291%Yes
200033592%Yes
2001365100%Yes
200236399%Yes
200336399%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007364100%Yes
2008366100%Yes
200936399%Yes
201034093%Yes
202323865%No
2024366100%Yes
2025365100%Yes
202628779%No

Latest Records

20
Latest records at W Allis
DateStationRecordValueBeat old record byOld record stoodSignificance
13 October 2026W Allis, USdaily high max (Provisional)31.7 C (89.1 F)0.6 C (1.1 F)51 years23 of 100 (Routine)
1 October 2026W Allis, USdaily rain (Provisional)20.8 mm (0.8 in)2.0 mm (0.08 in)52 years20 of 100 (Routine)
20 September 2026W Allis, USdaily rain (Provisional)35.1 mm (1.4 in)7.7 mm (0.30 in)53 years29 of 100 (Routine)
19 September 2026W Allis, USdaily rain (Provisional)29.2 mm (1.1 in)3.3 mm (0.13 in)24 years16 of 100 (Routine)
2 August 2026W Allis, USdaily low max (Tie)21.1 C (70.0 F)tie60 years6 of 100 (Routine)
1 August 2026W Allis, USdaily rain63.8 mm (2.5 in)10.0 mm (0.4 in)72 years33 of 100 (Routine)
28 July 2026W Allis, USdaily rain36.6 mm (1.4 in)25.4 mm (1.0 in)64 years44 of 100 (Notable)
27 July 2026W Allis, USdaily high min24.4 C (75.9 F)1.6 C (2.9 F)23 years18 of 100 (Routine)
23 July 2026W Allis, USdaily low min (Tie)13.3 C (55.9 F)tie44 years5 of 100 (Routine)
18 July 2026W Allis, USdaily high max (Tie)36.1 C (97.0 F)tie60 years6 of 100 (Routine)
16 July 2026W Allis, USdaily high max37.2 C (99.0 F)1.1 C (2.0 F)20 years15 of 100 (Routine)
15 July 2026W Allis, USall-time high max40.0 C (104.0 F)1.1 C (2.0 F)73 years50 of 100 (Notable)
30 June 2026W Allis, USdaily high min (Tie)25.6 C (78.1 F)tie56 years5 of 100 (Routine)
14 May 2026W Allis, USdaily low min (Tie)3.3 C (37.9 F)tie67 years6 of 100 (Routine)
12 May 2026W Allis, USdaily low min (Tie)0.6 C (33.1 F)tie55 years5 of 100 (Routine)
2 May 2026W Allis, USdaily low min-1.1 C (30.0 F)1.1 C (2.0 F)64 years28 of 100 (Routine)
2 May 2026W Allis, USdaily low max (Tie)7.2 C (45.0 F)tie72 years7 of 100 (Routine)
24 April 2026W Allis, USdaily high min (Tie)13.3 C (55.9 F)tie65 years6 of 100 (Routine)
20 April 2026W Allis, USdaily low min-2.2 C (28.0 F)0.5 C (0.9 F)72 years29 of 100 (Routine)
18 April 2026W Allis, USdaily rain42.4 mm (1.7 in)25.1 mm (1.0 in)48 years44 of 100 (Notable)

Climate Trend

45 complete years, 1952 to 2025
Annual mean temperature at W Allis as warming stripes, 1952 to 2025 One stripe for each of 45 complete years at W Allis, 1952 to 2025. Blue stripes are years cooler than the station's own mean of 9.1 C (48.4 F); red stripes are warmer. The coolest year was 1972, at 7.8 C (46.0 F), and the warmest was 2024, at 11.3 C (52.3 F). The strongest colour marks a difference of 2.2 C (4.0 F). 1952: 9.5 C, +0.4 C from the station mean1953: 10.2 C, +1.1 C from the station mean1954: 9.7 C, +0.6 C from the station mean1955: 9.7 C, +0.6 C from the station mean1956: 9.2 C, +0.1 C from the station mean1957: 8.8 C, -0.3 C from the station mean1958: 8.6 C, -0.5 C from the station mean1959: 8.9 C, -0.2 C from the station mean1960: 8.5 C, -0.6 C from the station mean1961: 9.0 C, -0.1 C from the station mean1962: 8.0 C, -1.1 C from the station mean1963: 8.1 C, -1.0 C from the station mean1965: 8.6 C, -0.5 C from the station mean1966: 8.5 C, -0.6 C from the station mean1967: 8.2 C, -0.9 C from the station mean1968: 9.2 C, +0.1 C from the station mean1969: 8.6 C, -0.5 C from the station mean1970: 9.0 C, -0.1 C from the station mean1971: 9.1 C, 0.0 C from the station mean1972: 7.8 C, -1.3 C from the station mean1973: 10.3 C, +1.2 C from the station mean1974: 9.2 C, +0.1 C from the station mean1975: 9.6 C, +0.5 C from the station mean1976: 8.5 C, -0.6 C from the station mean1977: 8.9 C, -0.2 C from the station mean1978: 8.2 C, -0.9 C from the station mean1979: 8.2 C, -0.9 C from the station mean1980: 9.0 C, -0.1 C from the station mean1981: 9.5 C, +0.4 C from the station mean1982: 8.9 C, -0.2 C from the station mean1983: 9.8 C, +0.7 C from the station mean1984: 9.5 C, +0.4 C from the station mean1985: 8.7 C, -0.4 C from the station mean1986: 8.8 C, -0.3 C from the station mean2001: 10.0 C, +0.9 C from the station mean2002: 9.7 C, +0.6 C from the station mean2003: 9.1 C, 0.0 C from the station mean2004: 9.3 C, +0.2 C from the station mean2005: 9.9 C, +0.8 C from the station mean2006: 10.1 C, +1.0 C from the station mean2007: 9.6 C, +0.5 C from the station mean2008: 8.2 C, -0.9 C from the station mean2009: 8.6 C, -0.5 C from the station mean2024: 11.3 C, +2.2 C from the station mean2025: 9.4 C, +0.3 C from the station mean19521960197019801990200020102020
One stripe for each of 45 complete years at W Allis, 1952 to 2025. Blue stripes are years cooler than the station's own mean of 9.1 C (48.4 F); red stripes are warmer. The coolest year was 1972, at 7.8 C (46.0 F), and the warmest was 2024, at 11.3 C (52.3 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at W Allis as warming stripes, 1952 to 2025
YearAnnual mean temperatureDifference from the station mean
19529.5 C+0.36 C
195310.2 C+1.14 C
19549.7 C+0.64 C
19559.7 C+0.58 C
19569.2 C+0.12 C
19578.8 C-0.34 C
19588.6 C-0.47 C
19598.9 C-0.20 C
19608.5 C-0.59 C
19619.0 C-0.15 C
19628.0 C-1.12 C
19638.1 C-0.96 C
19658.6 C-0.50 C
19668.5 C-0.58 C
19678.2 C-0.93 C
19689.2 C+0.14 C
19698.6 C-0.55 C
19709.0 C-0.06 C
19719.1 C-0.04 C
19727.8 C-1.31 C
197310.3 C+1.15 C
19749.2 C+0.12 C
19759.6 C+0.45 C
19768.5 C-0.57 C
19778.9 C-0.19 C
19788.2 C-0.86 C
19798.2 C-0.91 C
19809.0 C-0.12 C
19819.5 C+0.40 C
19828.9 C-0.24 C
19839.8 C+0.68 C
19849.5 C+0.38 C
19858.7 C-0.37 C
19868.8 C-0.26 C
200110.0 C+0.92 C
20029.7 C+0.61 C
20039.1 C+0.01 C
20049.3 C+0.23 C
20059.9 C+0.80 C
200610.1 C+0.99 C
20079.6 C+0.48 C
20088.2 C-0.89 C
20098.6 C-0.46 C
202411.3 C+2.19 C
20259.4 C+0.27 C

The annual mean temperature here has risen by 0.12 C (0.02 to 0.22) per decade over 1952 to 2025. In Fahrenheit: 0.21 F (0.03 to 0.40) per decade. The slope is a straight line fitted to 45 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at W Allis
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.12 C (0.02 to 0.22) per decade0.21 F (0.03 to 0.40) per decade1952 to 202545Rise
Mean daily maximum0.3 C (0.1 to 0.4) per decade0.5 F (0.3 to 0.7) per decade1952 to 202545Rise
Mean daily minimum-0.02 C (-0.14 to 0.11) per decade-0.03 F (-0.26 to 0.20) per decade1952 to 202545Not 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

1951 to 2026
Yearly extremes at W Allis: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)40.0 C (104.0 F)202636.1 C (97.0 F)53
Coldest night (TNn)-32.2 C (-26.0 F)1985-23.3 C (-9.9 F)53
Wettest day (Rx1day)222.5 mm (8.8 in)202557.4 mm (2.3 in)53
Wettest five days (Rx5day)237.7 mm (9.4 in)202597.2 mm (3.8 in)53
Longest dry spell (CDD)49 days196919 days53

Hottest day (TXx)

Hottest day (TXx) at W Allis by year The hottest day of the year at W Allis, 1951 to 2026. The record is 40.0 C (104.0 F) in 2026, marked on the chart; the median year is 36.1 C (97.0 F). 253035401960198020002020Record: 40.0 C (104.0 F) in 2026
The hottest day of the year at W Allis, 1951 to 2026. The record is 40.0 C (104.0 F) in 2026, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at W Allis by year
YearHottest day (TXx)
195127.8 C (82.0 F)
195236.1 C (97.0 F)
195338.9 C (102.0 F)
195436.1 C (97.0 F)
195537.8 C (100.0 F)
195636.7 C (98.1 F)
195735.0 C (95.0 F)
195835.6 C (96.1 F)
195936.1 C (97.0 F)
196035.0 C (95.0 F)
196135.6 C (96.1 F)
196233.9 C (93.0 F)
196337.2 C (99.0 F)
196437.2 C (99.0 F)
196538.9 C (102.0 F)
196638.3 C (100.9 F)
196733.9 C (93.0 F)
196836.1 C (97.0 F)
196933.9 C (93.0 F)
197036.1 C (97.0 F)
197136.1 C (97.0 F)
197236.1 C (97.0 F)
197336.7 C (98.1 F)
197436.7 C (98.1 F)
197535.0 C (95.0 F)
197638.3 C (100.9 F)
197738.3 C (100.9 F)
197835.0 C (95.0 F)
197934.4 C (93.9 F)
198037.8 C (100.0 F)
198135.0 C (95.0 F)
198235.0 C (95.0 F)
198338.3 C (100.9 F)
198436.1 C (97.0 F)
198535.6 C (96.1 F)
198635.0 C (95.0 F)
198736.1 C (97.0 F)
199937.8 C (100.0 F)
200035.0 C (95.0 F)
200137.8 C (100.0 F)
200238.3 C (100.9 F)
200336.7 C (98.1 F)
200433.9 C (93.0 F)
200536.7 C (98.1 F)
200637.2 C (99.0 F)
200734.4 C (93.9 F)
200833.3 C (91.9 F)
200936.7 C (98.1 F)
201036.1 C (97.0 F)
202337.8 C (100.0 F)
202435.6 C (96.1 F)
202535.6 C (96.1 F)
202640.0 C (104.0 F)

Coldest night (TNn)

Coldest night (TNn) at W Allis by year The coldest night of the year at W Allis, 1951 to 2026. The record is -32.2 C (-26.0 F) in 1985, marked on the chart; the median year is -23.3 C (-9.9 F). -40-30-20-101960198020002020Record: -32.2 C (-26.0 F) in 1985
The coldest night of the year at W Allis, 1951 to 2026. The record is -32.2 C (-26.0 F) in 1985, marked on the chart; the median year is -23.3 C (-9.9 F).
Coldest night (TNn) at W Allis by year
YearColdest night (TNn)
1951-22.8 C (-9.0 F)
1952-23.3 C (-9.9 F)
1953-20.6 C (-5.1 F)
1954-25.0 C (-13.0 F)
1955-23.9 C (-11.0 F)
1956-18.9 C (-2.0 F)
1957-22.2 C (-8.0 F)
1958-23.3 C (-9.9 F)
1959-24.4 C (-11.9 F)
1960-21.1 C (-6.0 F)
1961-22.8 C (-9.0 F)
1962-24.4 C (-11.9 F)
1963-31.1 C (-24.0 F)
1964-20.0 C (-4.0 F)
1965-27.2 C (-17.0 F)
1966-30.6 C (-23.1 F)
1967-28.3 C (-18.9 F)
1968-24.4 C (-11.9 F)
1969-23.3 C (-9.9 F)
1970-23.9 C (-11.0 F)
1971-23.9 C (-11.0 F)
1972-29.4 C (-20.9 F)
1973-22.2 C (-8.0 F)
1974-24.4 C (-11.9 F)
1975-23.3 C (-9.9 F)
1976-24.4 C (-11.9 F)
1977-28.3 C (-18.9 F)
1978-22.2 C (-8.0 F)
1979-26.7 C (-16.1 F)
1980-20.6 C (-5.1 F)
1981-21.7 C (-7.1 F)
1982-30.6 C (-23.1 F)
1983-29.4 C (-20.9 F)
1984-27.2 C (-17.0 F)
1985-32.2 C (-26.0 F)
1986-22.2 C (-8.0 F)
1987-22.8 C (-9.0 F)
1999-18.9 C (-2.0 F)
2000-21.7 C (-7.1 F)
2001-18.3 C (-0.9 F)
2002-22.2 C (-8.0 F)
2003-22.8 C (-9.0 F)
2004-25.0 C (-13.0 F)
2005-20.0 C (-4.0 F)
2006-26.1 C (-15.0 F)
2007-25.0 C (-13.0 F)
2008-22.2 C (-8.0 F)
2009-24.4 C (-11.9 F)
2010-17.8 C (0.0 F)
2023-10.6 C (12.9 F)
2024-21.7 C (-7.1 F)
2025-23.9 C (-11.0 F)
2026-26.7 C (-16.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at W Allis by year The wettest day of the year at W Allis, 1951 to 2026. The record is 222.5 mm (8.8 in) in 2025, marked on the chart; the median year is 57.4 mm (2.3 in). 0501001502002501960198020002020Record: 222.5 mm (8.8 in) in 2025
The wettest day of the year at W Allis, 1951 to 2026. The record is 222.5 mm (8.8 in) in 2025, marked on the chart; the median year is 57.4 mm (2.3 in).
Wettest day (Rx1day) at W Allis by year
YearWettest day (Rx1day)
195128.7 mm (1.1 in)
195269.9 mm (2.8 in)
195353.8 mm (2.1 in)
195469.9 mm (2.8 in)
195542.9 mm (1.7 in)
195652.8 mm (2.1 in)
195746.0 mm (1.8 in)
195842.7 mm (1.7 in)
195972.6 mm (2.9 in)
196070.4 mm (2.8 in)
196172.4 mm (2.9 in)
196248.8 mm (1.9 in)
196326.2 mm (1.0 in)
196461.7 mm (2.4 in)
196571.1 mm (2.8 in)
196632.0 mm (1.3 in)
196756.1 mm (2.2 in)
196859.2 mm (2.3 in)
196955.6 mm (2.2 in)
197044.7 mm (1.8 in)
197148.8 mm (1.9 in)
197256.6 mm (2.2 in)
197389.4 mm (3.5 in)
197439.4 mm (1.6 in)
197551.1 mm (2.0 in)
197657.9 mm (2.3 in)
197755.4 mm (2.2 in)
197857.4 mm (2.3 in)
197950.0 mm (2.0 in)
198048.0 mm (1.9 in)
198143.4 mm (1.7 in)
198265.0 mm (2.6 in)
198386.4 mm (3.4 in)
198447.2 mm (1.9 in)
198549.5 mm (1.9 in)
198678.2 mm (3.1 in)
198748.3 mm (1.9 in)
199987.4 mm (3.4 in)
200081.8 mm (3.2 in)
200157.4 mm (2.3 in)
200280.5 mm (3.2 in)
200342.9 mm (1.7 in)
200465.5 mm (2.6 in)
200576.7 mm (3.0 in)
200693.7 mm (3.7 in)
200754.1 mm (2.1 in)
2008115.6 mm (4.6 in)
2009112.0 mm (4.4 in)
201078.5 mm (3.1 in)
202386.9 mm (3.4 in)
202457.7 mm (2.3 in)
2025222.5 mm (8.8 in)
202666.3 mm (2.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at W Allis by year The wettest five days of the year at W Allis, 1951 to 2026. The record is 237.7 mm (9.4 in) in 2025, marked on the chart; the median year is 97.2 mm (3.8 in). 01002003001960198020002020Record: 237.7 mm (9.4 in) in 2025
The wettest five days of the year at W Allis, 1951 to 2026. The record is 237.7 mm (9.4 in) in 2025, marked on the chart; the median year is 97.2 mm (3.8 in).
Wettest five days (Rx5day) at W Allis by year
YearWettest five days (Rx5day)
195151.0 mm (2.0 in)
1952125.2 mm (4.9 in)
1953118.8 mm (4.7 in)
1954115.5 mm (4.5 in)
195578.0 mm (3.1 in)
195676.8 mm (3.0 in)
195753.1 mm (2.1 in)
195858.0 mm (2.3 in)
1959106.7 mm (4.2 in)
1960127.1 mm (5.0 in)
1961108.4 mm (4.3 in)
196261.4 mm (2.4 in)
196333.3 mm (1.3 in)
1964108.2 mm (4.3 in)
196597.9 mm (3.9 in)
196658.0 mm (2.3 in)
196799.5 mm (3.9 in)
196881.2 mm (3.2 in)
1969115.0 mm (4.5 in)
197095.3 mm (3.8 in)
197166.0 mm (2.6 in)
1972114.4 mm (4.5 in)
1973104.9 mm (4.1 in)
197470.6 mm (2.8 in)
197585.9 mm (3.4 in)
197680.0 mm (3.1 in)
1977103.0 mm (4.1 in)
1978120.2 mm (4.7 in)
197961.5 mm (2.4 in)
198096.3 mm (3.8 in)
198177.7 mm (3.1 in)
198289.6 mm (3.5 in)
1983112.8 mm (4.4 in)
198474.8 mm (2.9 in)
198572.9 mm (2.9 in)
1986119.4 mm (4.7 in)
198795.9 mm (3.8 in)
1999127.2 mm (5.0 in)
2000103.5 mm (4.1 in)
200164.8 mm (2.6 in)
2002120.1 mm (4.7 in)
200389.8 mm (3.5 in)
200497.4 mm (3.8 in)
2005105.4 mm (4.1 in)
200697.2 mm (3.8 in)
2007136.4 mm (5.4 in)
2008213.9 mm (8.4 in)
2009151.2 mm (6.0 in)
201084.2 mm (3.3 in)
202394.8 mm (3.7 in)
202496.8 mm (3.8 in)
2025237.7 mm (9.4 in)
2026138.2 mm (5.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at W Allis by year The longest dry spell of the year at W Allis, 1951 to 2026. The record is 49 days in 1969, marked on the chart; the median year is 19 days. 10203040501960198020002020Record: 49 days in 1969
The longest dry spell of the year at W Allis, 1951 to 2026. The record is 49 days in 1969, marked on the chart; the median year is 19 days.
Longest dry spell (CDD) at W Allis by year
YearLongest dry spell (CDD)
195110 days
195216 days
195324 days
195419 days
195529 days
195616 days
195725 days
195830 days
195926 days
196026 days
196121 days
196217 days
196316 days
196424 days
196519 days
196620 days
196719 days
196819 days
196949 days
197019 days
197115 days
197219 days
197315 days
197412 days
197518 days
197627 days
197718 days
197822 days
197917 days
198013 days
198127 days
198218 days
198320 days
198421 days
198514 days
198624 days
198729 days
199925 days
200015 days
200119 days
200216 days
200322 days
200416 days
200514 days
200615 days
200725 days
200820 days
200923 days
201021 days
202318 days
202422 days
202524 days
202618 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

45 years with a frost

Across 45 years with a frost, the median last spring frost at W Allis falls on 24 April and the median first autumn frost on 25 October, which leaves a median of 185 days between them.

Fitted over all years, the growing season changes by -1.2 days per decade at this station.

Frost dates and growing season at W Allis
MeasureMedian, all yearsEarliest periodRecent period (1968 to 2025)Recent against earliestFitted trend
Last spring frost24 Apriln/a24 Apriln/a+0.1 days per decade
First autumn frost25 Octobern/a25 Octobern/a-1.1 days per decade
Growing days185 daysn/a185 daysn/a-1.2 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

49 years, 1952 to 2025

A day with at least 58.2 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 172.4 mm (6.8 in) of rain is expected about once in 100 years.

Rainfall return levels at W Allis: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years58.2 mm (2.3 in)
5 years79.0 mm (3.1 in)
10 years96.0 mm (3.8 in)
25 years122.0 mm (4.8 in)
50 years145.3 mm (5.7 in)Longer than the 49 years of record
100 years172.4 mm (6.8 in)Longer than the 49 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, 49 years of values from 1952 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: 222.5 mm (8.8 in) in 2025; 115.6 mm (4.6 in) in 2008; 112.0 mm (4.4 in) in 2009.

Station Changes

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

Download the Data

  • Data for W Allis standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for W Allis 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-16).