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Built 2026-10-14 (14 October 2026)

Clinton Wwtp Weather Records (USC00471667)

Record envelope, standing records and threshold days for Clinton Wwtp (USC00471667), Wisconsin, United States, with 79 years of record.

Key Facts for Clinton Wwtp

  • Clinton Wwtp (USC00471667) is a weather station in Wisconsin, United States at 42.55 latitude and -88.88 longitude, 282 m (924 ft) above sea level.
  • The station reports from 1948 to 2026, 79 years of record.
  • 1,464 records set at Clinton Wwtp still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Clinton Wwtp set a daily record precipitation of 50.8 mm (2.0 in) on 19 September 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, 42.55 latitude, -88.88 longitude.
  • Elevation: 282 m (924 ft).
  • Period of record: 1948 to 2026, 79 years.
  • Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

34 days at or beyond a record
Daily record high and record low at Clinton Wwtp, with 2026 drawn through them The band shows the record high and record low for each calendar day at Clinton Wwtp. 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 Clinton Wwtp. 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 Clinton Wwtp, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan16.1 C (61.0 F)-33.3 C (-27.9 F)14.4 C (57.9 F)-27.8 C (-18.0 F)
Feb22.2 C (72.0 F)-29.4 C (-20.9 F)17.8 C (64.0 F)-20.0 C (-4.0 F)
Mar27.8 C (82.0 F)-27.2 C (-17.0 F)26.7 C (80.1 F)-16.1 C (3.0 F)
Apr32.2 C (90.0 F)-10.0 C (14.0 F)26.7 C (80.1 F)-6.1 C (21.0 F)
May35.6 C (96.1 F)-5.6 C (21.9 F)31.7 C (89.1 F)-3.3 C (26.1 F)
Jun36.7 C (98.1 F)3.3 C (37.9 F)32.8 C (91.0 F)7.2 C (45.0 F)
Jul38.9 C (102.0 F)7.2 C (45.0 F)35.6 C (96.1 F)8.3 C (46.9 F)
Aug35.6 C (96.1 F)3.9 C (39.0 F)30.0 C (86.0 F)8.9 C (48.0 F)
Sep35.0 C (95.0 F)-2.2 C (28.0 F)33.3 C (91.9 F)5.6 C (42.1 F)
Oct31.7 C (89.1 F)-9.4 C (15.1 F)28.3 C (82.9 F)3.9 C (39.0 F)
Nov23.9 C (75.0 F)-20.0 C (-4.0 F)n/an/a
Dec18.9 C (66.0 F)-28.9 C (-20.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Clinton Wwtp by the year they were set 1,464 records at Clinton Wwtp still stand. 2012 holds the most, with 104. 0501001502001: 202002: 662003: 652004: 522005: 782006: 662007: 722008: 562009: 582010: 512011: 422012: 1042013: 622014: 742015: 732016: 422017: 862018: 462019: 202020: 382021: 512022: 492023: 502024: 532025: 452026: 45200120042007201020132016201920222025
1,464 records at Clinton Wwtp still stand. 2012 holds the most, with 104.
Standing records at Clinton Wwtp by the year they were set
Year setStanding records
200120
200266
200365
200452
200578
200666
200772
200856
200958
201051
201142
2012104
201362
201474
201573
201642
201786
201846
201920
202038
202151
202249
202350
202453
202545
202645

All-Time Record Progression

7 new records
When Clinton Wwtp set new all-time records 7 all-time records were set at Clinton Wwtp between 5 August 1998 and 19 June 2018. Each dot is a new record. Record daily precipitationRecord snow depthRecord daily snowfall5 August 1998: Record daily precipitation 132.1 mm (5.2 in)29 December 2000: Record snow depth 40.6 cm (16.0 in)31 December 2000: Record snow depth 45.7 cm (18.0 in)7 February 2008: Record daily snowfall 35.6 cm (14.0 in)11 February 2018: Record snow depth 48.3 cm (19.0 in)12 February 2018: Record snow depth 53.3 cm (21.0 in)19 June 2018: Record daily precipitation 138.4 mm (5.4 in)2000200520102015
7 all-time records were set at Clinton Wwtp between 5 August 1998 and 19 June 2018. Each dot is a new record.
When Clinton Wwtp set new all-time records
DateKindDetail
1998-08-05Record daily precipitationRecord daily precipitation 132.1 mm (5.2 in)
2000-12-29Record snow depthRecord snow depth 40.6 cm (16.0 in)
2000-12-31Record snow depthRecord snow depth 45.7 cm (18.0 in)
2008-02-07Record daily snowfallRecord daily snowfall 35.6 cm (14.0 in)
2018-02-11Record snow depthRecord snow depth 48.3 cm (19.0 in)
2018-02-12Record snow depthRecord snow depth 53.3 cm (21.0 in)
2018-06-19Record daily precipitationRecord daily precipitation 138.4 mm (5.4 in)

Wettest Day of Each Month

Jun: 138.4 mm (5.4 in)
Record daily precipitation for each month at Clinton Wwtp The wettest day on record for each calendar month at Clinton Wwtp. The most was 138.4 mm (5.4 in) on 19 June 2018. 050100150 Jan: 73.2 mm (2.9 in), 24 January 1950 Jan Feb: 38.1 mm (1.5 in), 22 February 1981 Feb Mar: 100.3 mm (3.9 in), 12 March 2006 Mar Apr: 111.5 mm (4.4 in), 21 April 1973 Apr May: 72.1 mm (2.8 in), 19 May 1959 May Jun: 138.4 mm (5.4 in), 19 June 2018 Jun Jul: 81.3 mm (3.2 in), 11 July 2008 Jul Aug: 132.1 mm (5.2 in), 5 August 1998 Aug Sep: 83.8 mm (3.3 in), 13 September 1961 Sep Oct: 73.7 mm (2.9 in), 5 October 1991 Oct Nov: 69.9 mm (2.8 in), 16 November 1961 Nov Dec: 52.6 mm (2.1 in), 9 December 2003 Dec
The wettest day on record for each calendar month at Clinton Wwtp. The most was 138.4 mm (5.4 in) on 19 June 2018.
Record daily precipitation for each month at Clinton Wwtp
MonthRecord daily precipitation (mm)Date
Jan73.2 mm (2.9 in)24 January 1950
Feb38.1 mm (1.5 in)22 February 1981
Mar100.3 mm (3.9 in)12 March 2006
Apr111.5 mm (4.4 in)21 April 1973
May72.1 mm (2.8 in)19 May 1959
Jun138.4 mm (5.4 in)19 June 2018
Jul81.3 mm (3.2 in)11 July 2008
Aug132.1 mm (5.2 in)5 August 1998
Sep83.8 mm (3.3 in)13 September 1961
Oct73.7 mm (2.9 in)5 October 1991
Nov69.9 mm (2.8 in)16 November 1961
Dec52.6 mm (2.1 in)9 December 2003

Period of Record Coverage

2001 to 2026
Days with data per year at Clinton Wwtp 26 years of record at Clinton Wwtp, 2001 to 2026. 4 years have data for under 90 percent of days and are left out of rankings: 2001, 2018, 2019, 2026. 2001: 120 of 365 days2002: 364 of 365 days2003: 363 of 365 days2004: 362 of 366 days2005: 362 of 365 days2006: 363 of 365 days2007: 365 of 365 days2008: 360 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 364 of 365 days2012: 366 of 366 days2013: 364 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 361 of 366 days2017: 361 of 365 days2018: 217 of 365 days2019: 93 of 365 days2020: 349 of 366 days2021: 352 of 365 days2022: 364 of 365 days2023: 362 of 365 days2024: 363 of 366 days2025: 365 of 365 days2026: 283 of 365 days20052010201520202025
26 years of record at Clinton Wwtp, 2001 to 2026. 4 years have data for under 90 percent of days and are left out of rankings: 2001, 2018, 2019, 2026.
Days with data per year at Clinton Wwtp
YearDays with dataShare of yearComplete
200112033%No
2002364100%Yes
200336399%Yes
200436299%Yes
200536299%Yes
200636399%Yes
2007365100%Yes
200836098%Yes
2009365100%Yes
2010365100%Yes
2011364100%Yes
2012366100%Yes
2013364100%Yes
2014365100%Yes
2015365100%Yes
201636199%Yes
201736199%Yes
201821759%No
20199325%No
202034995%Yes
202135296%Yes
2022364100%Yes
202336299%Yes
202436399%Yes
2025365100%Yes
202628378%No

Latest Records

20
Latest records at Clinton Wwtp
DateStationRecordValueBeat old record byOld record stoodSignificance
19 September 2026Clinton Wwtp, USdaily rain (Provisional)50.8 mm (2.0 in)8.9 mm (0.35 in)28 years21 of 100 (Routine)
15 April 2026Clinton Wwtp, USdaily rain34.3 mm (1.4 in)8.9 mm (0.35 in)32 years24 of 100 (Routine)
4 April 2026Clinton Wwtp, USdaily rain20.8 mm (0.8 in)5.1 mm (0.20 in)8 years13 of 100 (Routine)
16 March 2026Clinton Wwtp, USdaily snowfall20.3 cm (8.0 in)10.6 cm (4.2 in)65 years46 of 100 (Notable)
16 March 2026Clinton Wwtp, USdaily rain30.7 mm (1.2 in)9.9 mm (0.39 in)9 years20 of 100 (Routine)
16 March 2026Clinton Wwtp, USdaily snow depth (Tie)20.3 cm (8.0 in)tie65 years6 of 100 (Routine)
11 March 2026Clinton Wwtp, USdaily rain28.7 mm (1.1 in)8.9 mm (0.35 in)64 years36 of 100 (Notable)
9 January 2026Clinton Wwtp, USdaily rain8.1 mm (0.32 in)2.3 mm (0.09 in)42 years20 of 100 (Routine)
3 December 2025Clinton Wwtp, USdaily snow depth20.3 cm (8.0 in)5.1 cm (2.0 in)34 years23 of 100 (Routine)
2 December 2025Clinton Wwtp, USdaily snow depth22.9 cm (9.0 in)15.3 cm (6.0 in)72 years48 of 100 (Notable)
1 December 2025Clinton Wwtp, USdaily snow depth17.8 cm (7.0 in)7.6 cm (3.0 in)56 years33 of 100 (Routine)
30 November 2025Clinton Wwtp, USmonthly snow depth (Tie)20.3 cm (8.0 in)tie10 years5 of 100 (Routine)
6 July 2025Clinton Wwtp, USdaily rain37.6 mm (1.5 in)6.1 mm (0.24 in)3 years11 of 100 (Routine)
4 July 2025Clinton Wwtp, USdaily rain55.9 mm (2.2 in)29.2 mm (1.1 in)30 years37 of 100 (Notable)
18 June 2025Clinton Wwtp, USdaily rain78.7 mm (3.1 in)24.3 mm (1.0 in)27 years31 of 100 (Routine)
4 June 2025Clinton Wwtp, USdaily rain49.5 mm (1.9 in)21.1 mm (0.8 in)23 years27 of 100 (Routine)
15 February 2025Clinton Wwtp, USdaily snowfall10.2 cm (4.0 in)2.6 cm (1.0 in)61 years30 of 100 (Routine)
13 February 2025Clinton Wwtp, USdaily snowfall (Tie)12.7 cm (5.0 in)tie75 years7 of 100 (Routine)
22 November 2024Clinton Wwtp, USdaily snowfall (Tie)5.1 cm (2.0 in)tie9 years2 of 100 (Routine)
19 November 2024Clinton Wwtp, USdaily rain21.1 mm (0.8 in)4.1 mm (0.16 in)41 years20 of 100 (Routine)

Climate Trend

22 complete years, 2002 to 2025
Annual mean temperature at Clinton Wwtp as warming stripes, 2002 to 2025 One stripe for each of 22 complete years at Clinton Wwtp, 2002 to 2025. Blue stripes are years cooler than the station's own mean of 8.5 C (47.3 F); red stripes are warmer. The coolest year was 2014, at 6.3 C (43.3 F), and the warmest was 2012, at 10.3 C (50.6 F). The strongest colour marks a difference of 2.3 C (4.1 F). 2002: 8.9 C, +0.4 C from the station mean2003: 7.9 C, -0.6 C from the station mean2004: 8.4 C, -0.1 C from the station mean2005: 9.0 C, +0.5 C from the station mean2006: 9.4 C, +0.9 C from the station mean2007: 8.6 C, +0.1 C from the station mean2008: 7.2 C, -1.3 C from the station mean2009: 7.5 C, -1.0 C from the station mean2010: 8.9 C, +0.4 C from the station mean2011: 8.5 C, -0.1 C from the station mean2012: 10.3 C, +1.8 C from the station mean2013: 7.3 C, -1.2 C from the station mean2014: 6.3 C, -2.3 C from the station mean2015: 8.4 C, -0.1 C from the station mean2016: 9.5 C, +1.0 C from the station mean2017: 9.0 C, +0.5 C from the station mean2020: 8.7 C, +0.2 C from the station mean2021: 8.7 C, +0.2 C from the station mean2022: 7.3 C, -1.2 C from the station mean2023: 9.1 C, +0.6 C from the station mean2024: 9.5 C, +1.0 C from the station mean2025: 8.9 C, +0.3 C from the station mean200220042006200820102012201420162018202020222024
One stripe for each of 22 complete years at Clinton Wwtp, 2002 to 2025. Blue stripes are years cooler than the station's own mean of 8.5 C (47.3 F); red stripes are warmer. The coolest year was 2014, at 6.3 C (43.3 F), and the warmest was 2012, at 10.3 C (50.6 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Clinton Wwtp as warming stripes, 2002 to 2025
YearAnnual mean temperatureDifference from the station mean
20028.9 C+0.41 C
20037.9 C-0.61 C
20048.4 C-0.10 C
20059.0 C+0.51 C
20069.4 C+0.89 C
20078.6 C+0.10 C
20087.2 C-1.29 C
20097.5 C-1.04 C
20108.9 C+0.41 C
20118.5 C-0.07 C
201210.3 C+1.80 C
20137.3 C-1.18 C
20146.3 C-2.26 C
20158.4 C-0.15 C
20169.5 C+0.99 C
20179.0 C+0.51 C
20208.7 C+0.22 C
20218.7 C+0.17 C
20227.3 C-1.23 C
20239.1 C+0.55 C
20249.5 C+1.01 C
20258.9 C+0.34 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1948 to 2026
Yearly extremes at Clinton Wwtp: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.9 C (102.0 F)201234.2 C (93.5 F)26
Coldest night (TNn)-33.3 C (-27.9 F)2009-27.5 C (-17.5 F)26
Wettest day (Rx1day)138.4 mm (5.4 in)201861.0 mm (2.4 in)79
Wettest five days (Rx5day)256.0 mm (10.1 in)201394.0 mm (3.7 in)79
Longest dry spell (CDD)41 days199521 days79

Hottest day (TXx)

Hottest day (TXx) at Clinton Wwtp by year The hottest day of the year at Clinton Wwtp, 1948 to 2026. The record is 38.9 C (102.0 F) in 2012, marked on the chart; the median year is 34.2 C (93.5 F). 27.53032.53537.5401960198020002020Record: 38.9 C (102.0 F) in 2012
The hottest day of the year at Clinton Wwtp, 1948 to 2026. The record is 38.9 C (102.0 F) in 2012, marked on the chart; the median year is 34.2 C (93.5 F).
Hottest day (TXx) at Clinton Wwtp by year
YearHottest day (TXx)
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
1962n/a
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a
1968n/a
1969n/a
1970n/a
1971n/a
1972n/a
1973n/a
1974n/a
1975n/a
1976n/a
1977n/a
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
200130.6 C (87.1 F)
200235.0 C (95.0 F)
200335.6 C (96.1 F)
200431.7 C (89.1 F)
200535.0 C (95.0 F)
200633.9 C (93.0 F)
200732.2 C (90.0 F)
200832.2 C (90.0 F)
200935.0 C (95.0 F)
201034.4 C (93.9 F)
201135.6 C (96.1 F)
201238.9 C (102.0 F)
201335.6 C (96.1 F)
201431.1 C (88.0 F)
201532.2 C (90.0 F)
201632.8 C (91.0 F)
201735.0 C (95.0 F)
201833.3 C (91.9 F)
201928.9 C (84.0 F)
202032.8 C (91.0 F)
202134.4 C (93.9 F)
202235.6 C (96.1 F)
202334.4 C (93.9 F)
202433.3 C (91.9 F)
202533.9 C (93.0 F)
202635.6 C (96.1 F)

Coldest night (TNn)

Coldest night (TNn) at Clinton Wwtp by year The coldest night of the year at Clinton Wwtp, 1948 to 2026. The record is -33.3 C (-27.9 F) in 2009, marked on the chart; the median year is -27.5 C (-17.5 F). -35-30-25-20-151960198020002020Record: -33.3 C (-27.9 F) in 2009
The coldest night of the year at Clinton Wwtp, 1948 to 2026. The record is -33.3 C (-27.9 F) in 2009, marked on the chart; the median year is -27.5 C (-17.5 F).
Coldest night (TNn) at Clinton Wwtp by year
YearColdest night (TNn)
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
1962n/a
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a
1968n/a
1969n/a
1970n/a
1971n/a
1972n/a
1973n/a
1974n/a
1975n/a
1976n/a
1977n/a
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001-16.7 C (1.9 F)
2002-27.2 C (-17.0 F)
2003-23.9 C (-11.0 F)
2004-25.0 C (-13.0 F)
2005-24.4 C (-11.9 F)
2006-24.4 C (-11.9 F)
2007-28.9 C (-20.0 F)
2008-26.1 C (-15.0 F)
2009-33.3 C (-27.9 F)
2010-23.3 C (-9.9 F)
2011-27.8 C (-18.0 F)
2012-21.7 C (-7.1 F)
2013-26.1 C (-15.0 F)
2014-29.4 C (-20.9 F)
2015-27.2 C (-17.0 F)
2016-28.9 C (-20.0 F)
2017-27.2 C (-17.0 F)
2018-28.3 C (-18.9 F)
2019-20.0 C (-4.0 F)
2020-28.9 C (-20.0 F)
2021-29.4 C (-20.9 F)
2022-30.6 C (-23.1 F)
2023-27.8 C (-18.0 F)
2024-27.8 C (-18.0 F)
2025-27.8 C (-18.0 F)
2026-27.8 C (-18.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Clinton Wwtp by year The wettest day of the year at Clinton Wwtp, 1948 to 2026. The record is 138.4 mm (5.4 in) in 2018, marked on the chart; the median year is 61.0 mm (2.4 in). 0501001501960198020002020Record: 138.4 mm (5.4 in) in 2018
The wettest day of the year at Clinton Wwtp, 1948 to 2026. The record is 138.4 mm (5.4 in) in 2018, marked on the chart; the median year is 61.0 mm (2.4 in).
Wettest day (Rx1day) at Clinton Wwtp by year
YearWettest day (Rx1day)
194858.9 mm (2.3 in)
194933.0 mm (1.3 in)
195073.2 mm (2.9 in)
195159.7 mm (2.4 in)
195273.9 mm (2.9 in)
195343.2 mm (1.7 in)
195454.9 mm (2.2 in)
195558.4 mm (2.3 in)
195643.9 mm (1.7 in)
195738.1 mm (1.5 in)
195857.2 mm (2.3 in)
195972.1 mm (2.8 in)
196053.8 mm (2.1 in)
196183.8 mm (3.3 in)
196273.7 mm (2.9 in)
196353.6 mm (2.1 in)
196457.7 mm (2.3 in)
196545.2 mm (1.8 in)
196641.4 mm (1.6 in)
196763.8 mm (2.5 in)
196841.1 mm (1.6 in)
196940.4 mm (1.6 in)
197071.4 mm (2.8 in)
197169.3 mm (2.7 in)
197275.4 mm (3.0 in)
1973111.5 mm (4.4 in)
197443.7 mm (1.7 in)
197587.1 mm (3.4 in)
197637.3 mm (1.5 in)
197743.9 mm (1.7 in)
197867.6 mm (2.7 in)
1979119.1 mm (4.7 in)
198078.7 mm (3.1 in)
198188.9 mm (3.5 in)
198267.6 mm (2.7 in)
198332.5 mm (1.3 in)
198466.0 mm (2.6 in)
198561.0 mm (2.4 in)
198675.2 mm (3.0 in)
198755.4 mm (2.2 in)
198837.1 mm (1.5 in)
198957.9 mm (2.3 in)
199050.0 mm (2.0 in)
199173.7 mm (2.9 in)
199264.8 mm (2.6 in)
199399.6 mm (3.9 in)
199444.7 mm (1.8 in)
199557.2 mm (2.3 in)
199653.6 mm (2.1 in)
199761.0 mm (2.4 in)
1998132.1 mm (5.2 in)
199973.7 mm (2.9 in)
200063.0 mm (2.5 in)
200194.0 mm (3.7 in)
200252.3 mm (2.1 in)
200361.2 mm (2.4 in)
200446.7 mm (1.8 in)
200569.3 mm (2.7 in)
2006100.3 mm (3.9 in)
200796.3 mm (3.8 in)
200881.3 mm (3.2 in)
200952.1 mm (2.1 in)
201066.8 mm (2.6 in)
201148.3 mm (1.9 in)
201271.6 mm (2.8 in)
2013117.9 mm (4.6 in)
201449.8 mm (2.0 in)
201560.5 mm (2.4 in)
201636.3 mm (1.4 in)
201765.8 mm (2.6 in)
2018138.4 mm (5.4 in)
201980.0 mm (3.1 in)
202042.7 mm (1.7 in)
202135.6 mm (1.4 in)
202260.5 mm (2.4 in)
202368.6 mm (2.7 in)
202468.6 mm (2.7 in)
202596.5 mm (3.8 in)
202652.1 mm (2.1 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Clinton Wwtp by year The wettest five days of the year at Clinton Wwtp, 1948 to 2026. The record is 256.0 mm (10.1 in) in 2013, marked on the chart; the median year is 94.0 mm (3.7 in). 01002003001960198020002020Record: 256.0 mm (10.1 in) in 2013
The wettest five days of the year at Clinton Wwtp, 1948 to 2026. The record is 256.0 mm (10.1 in) in 2013, marked on the chart; the median year is 94.0 mm (3.7 in).
Wettest five days (Rx5day) at Clinton Wwtp by year
YearWettest five days (Rx5day)
194858.9 mm (2.3 in)
194953.3 mm (2.1 in)
195088.0 mm (3.5 in)
195177.2 mm (3.0 in)
195288.1 mm (3.5 in)
195366.5 mm (2.6 in)
1954112.8 mm (4.4 in)
195567.1 mm (2.6 in)
195666.2 mm (2.6 in)
195782.5 mm (3.2 in)
195894.5 mm (3.7 in)
1959107.4 mm (4.2 in)
1960107.7 mm (4.2 in)
1961167.9 mm (6.6 in)
196281.4 mm (3.2 in)
196366.1 mm (2.6 in)
196463.2 mm (2.5 in)
196575.2 mm (3.0 in)
196667.0 mm (2.6 in)
1967103.0 mm (4.1 in)
196884.5 mm (3.3 in)
196981.3 mm (3.2 in)
1970133.6 mm (5.3 in)
197184.0 mm (3.3 in)
1972118.0 mm (4.6 in)
1973126.0 mm (5.0 in)
197465.5 mm (2.6 in)
1975120.2 mm (4.7 in)
197690.7 mm (3.6 in)
197773.4 mm (2.9 in)
1978117.6 mm (4.6 in)
1979145.2 mm (5.7 in)
198099.0 mm (3.9 in)
1981111.0 mm (4.4 in)
198297.8 mm (3.9 in)
198365.0 mm (2.6 in)
198471.9 mm (2.8 in)
198577.7 mm (3.1 in)
1986128.5 mm (5.1 in)
198794.4 mm (3.7 in)
198850.2 mm (2.0 in)
198998.8 mm (3.9 in)
199067.0 mm (2.6 in)
199181.4 mm (3.2 in)
1992120.1 mm (4.7 in)
1993128.3 mm (5.1 in)
199459.4 mm (2.3 in)
199566.9 mm (2.6 in)
199692.7 mm (3.6 in)
199792.2 mm (3.6 in)
1998180.0 mm (7.1 in)
1999101.0 mm (4.0 in)
2000128.3 mm (5.1 in)
2001105.7 mm (4.2 in)
200288.6 mm (3.5 in)
2003104.6 mm (4.1 in)
200479.1 mm (3.1 in)
200588.9 mm (3.5 in)
2006143.4 mm (5.6 in)
2007194.1 mm (7.6 in)
2008142.7 mm (5.6 in)
200984.7 mm (3.3 in)
2010108.5 mm (4.3 in)
201194.0 mm (3.7 in)
201271.6 mm (2.8 in)
2013256.0 mm (10.1 in)
201491.8 mm (3.6 in)
2015135.0 mm (5.3 in)
201649.1 mm (1.9 in)
2017100.1 mm (3.9 in)
2018178.6 mm (7.0 in)
2019181.8 mm (7.2 in)
202096.6 mm (3.8 in)
202158.7 mm (2.3 in)
2022103.1 mm (4.1 in)
202379.5 mm (3.1 in)
2024107.0 mm (4.2 in)
2025175.5 mm (6.9 in)
2026128.1 mm (5.0 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Clinton Wwtp by year The longest dry spell of the year at Clinton Wwtp, 1948 to 2026. The record is 41 days in 1995, marked on the chart; the median year is 21 days. 10203040501960198020002020Record: 41 days in 1995
The longest dry spell of the year at Clinton Wwtp, 1948 to 2026. The record is 41 days in 1995, marked on the chart; the median year is 21 days.
Longest dry spell (CDD) at Clinton Wwtp by year
YearLongest dry spell (CDD)
194820 days
194920 days
195030 days
195114 days
195230 days
195324 days
195419 days
195519 days
195625 days
195723 days
195832 days
195923 days
196014 days
196124 days
196217 days
196322 days
196423 days
196519 days
196626 days
196719 days
196819 days
196924 days
197018 days
197123 days
197217 days
197314 days
197414 days
197517 days
197626 days
197733 days
197829 days
197926 days
198018 days
198131 days
198224 days
198315 days
198421 days
198514 days
198624 days
198723 days
198838 days
198921 days
199015 days
199128 days
199215 days
199320 days
199422 days
199541 days
199617 days
199715 days
199821 days
199926 days
200019 days
200128 days
200224 days
200327 days
200422 days
200517 days
200616 days
200725 days
200815 days
200926 days
201028 days
201118 days
201231 days
201316 days
201415 days
201523 days
201620 days
201721 days
201819 days
201927 days
202021 days
202121 days
202220 days
202313 days
202429 days
202522 days
202628 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

22 years with a frost

Across 22 years with a frost, the median last spring frost at Clinton Wwtp falls on 6 May and the median first autumn frost on 10 October, which leaves a median of 151 days between them.

Frost dates and growing season at Clinton Wwtp
MeasureMedian, all yearsEarliest periodRecent period (2002 to 2025)Recent against earliestFitted trend
Last spring frost6 Mayn/a6 Mayn/an/a
First autumn frost10 Octobern/a10 Octobern/an/a
Growing days151 daysn/a151 daysn/an/a

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

74 years, 1950 to 2025

A day with at least 61.7 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 141.3 mm (5.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Clinton Wwtp: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years61.7 mm (2.4 in)
5 years81.6 mm (3.2 in)
10 years95.3 mm (3.8 in)
25 years113.3 mm (4.5 in)
50 years127.1 mm (5.0 in)
100 years141.3 mm (5.6 in)Longer than the 74 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, 74 years of values from 1950 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: 138.4 mm (5.4 in) in 2018; 132.1 mm (5.2 in) in 1998; 119.1 mm (4.7 in) in 1979.

Download the Data

  • Data for Clinton Wwtp standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Clinton Wwtp 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-13).