Reedsburg Wwtp Weather Records (USC00477052)

Record envelope, standing records and threshold days for Reedsburg Wwtp (USC00477052), Wisconsin, United States, with 134 years of record.

Key Facts for Reedsburg Wwtp

Reedsburg Wwtp (USC00477052) is a weather station in Wisconsin, United States at 43.52 latitude and -90.00 longitude, 267 m (877 ft) above sea level.
The station reports from 1893 to 2026, 134 years of record.
1,464 records set at Reedsburg Wwtp still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Reedsburg Wwtp set a daily record high minimum temperature of 14.4 C (57.9 F) on 12 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, 43.52 latitude, -90.00 longitude.
Elevation: 267 m (877 ft).
Period of record: 1893 to 2026, 134 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

8 days at or beyond a record

The band shows the record high and record low for each calendar day at Reedsburg Wwtp. The lines show the 2026 daily maximum and minimum. 8 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Reedsburg Wwtp, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	15.6 C (60.1 F)	-41.1 C (-42.0 F)	11.1 C (52.0 F)	-29.4 C (-20.9 F)
Feb	22.2 C (72.0 F)	-40.0 C (-40.0 F)	17.8 C (64.0 F)	-20.6 C (-5.1 F)
Mar	29.4 C (84.9 F)	-36.7 C (-34.1 F)	26.1 C (79.0 F)	-18.3 C (-0.9 F)
Apr	35.0 C (95.0 F)	-16.7 C (1.9 F)	27.2 C (81.0 F)	-6.1 C (21.0 F)
May	34.4 C (93.9 F)	-5.0 C (23.0 F)	31.1 C (88.0 F)	-3.3 C (26.1 F)
Jun	39.4 C (102.9 F)	1.1 C (34.0 F)	32.2 C (90.0 F)	5.6 C (42.1 F)
Jul	40.0 C (104.0 F)	5.0 C (41.0 F)	35.6 C (96.1 F)	8.3 C (46.9 F)
Aug	39.4 C (102.9 F)	1.1 C (34.0 F)	29.4 C (84.9 F)	8.3 C (46.9 F)
Sep	36.7 C (98.1 F)	-4.4 C (24.1 F)	32.2 C (90.0 F)	4.4 C (39.9 F)
Oct	32.8 C (91.0 F)	-12.8 C (9.0 F)	28.3 C (82.9 F)	2.8 C (37.0 F)
Nov	24.4 C (75.9 F)	-24.4 C (-11.9 F)	n/a	n/a
Dec	18.9 C (66.0 F)	-32.8 C (-27.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Reedsburg Wwtp still stand. 2012 holds the most, with 42.

Standing records at Reedsburg Wwtp by the year they were set
Year set	Standing records
1893	22
1894	27
1915	30
1916	26
1917	30
1918	19
1919	25
1944	2
1945	14
1946	18
1947	25
1948	23
1949	13
1950	24
1951	32
1952	21
1953	17
1954	8
1955	17
1956	17
1957	16
1958	18
1959	28
1960	22
1961	10
1962	25
1963	27
1964	30
1965	28
1966	11
1967	22
1968	16
1969	16
1970	11
1971	17
1972	29
1973	12
1974	24
1975	14
1976	19
1977	25
1978	7
1979	13
1980	12
1981	12
1982	18
1983	27
1984	12
1985	21
1986	18
1987	22
1988	36
1989	16
1990	21
1991	18
2001	5
2002	16
2003	13
2004	8
2005	11
2006	15
2007	21
2008	2
2009	13
2010	6
2011	13
2012	42
2013	12
2014	18
2015	15
2016	9
2017	22
2018	15
2019	24
2020	15
2021	14
2022	16
2023	14
2024	9
2025	18
2026	15

All-Time Record Progression

8 new records

8 all-time records were set at Reedsburg Wwtp between 4 January 1971 and 31 January 2019. Each dot is a new record.

When Reedsburg Wwtp set new all-time records
Date	Kind	Detail
1971-01-04	Record daily snowfall	Record daily snowfall 43.2 cm (17.0 in)
1972-01-15	Record low maximum temperature	Record low maximum temperature -23.3 C (-9.9 F)
1975-08-23	Record daily precipitation	Record daily precipitation 96.8 mm (3.8 in)
1980-08-08	Record daily precipitation	Record daily precipitation 118.1 mm (4.6 in)
1988-07-31	Record high maximum temperature	Record high maximum temperature 40.0 C (104.0 F)
2001-08-02	Record daily precipitation	Record daily precipitation 154.2 mm (6.1 in)
2008-02-18	Record snow depth	Record snow depth 76.2 cm (30.0 in)
2019-01-31	Record low maximum temperature	Record low maximum temperature -23.9 C (-11.0 F)

Wettest Day of Each Month

Aug: 154.2 mm (6.1 in)

The wettest day on record for each calendar month at Reedsburg Wwtp. The most was 154.2 mm (6.1 in) on 2 August 2001.

Record daily precipitation for each month at Reedsburg Wwtp
Month	Record daily precipitation (mm)	Date
Jan	47.0 mm (1.9 in)	9 January 2026
Feb	30.5 mm (1.2 in)	21 February 1976
Mar	65.0 mm (2.6 in)	16 March 2016
Apr	67.3 mm (2.6 in)	14 April 2014
May	75.4 mm (3.0 in)	25 May 1950
Jun	135.4 mm (5.3 in)	8 June 2008
Jul	122.2 mm (4.8 in)	15 July 2010
Aug	154.2 mm (6.1 in)	2 August 2001
Sep	101.9 mm (4.0 in)	22 September 2016
Oct	118.9 mm (4.7 in)	23 October 2020
Nov	54.4 mm (2.1 in)	12 November 1982
Dec	50.8 mm (2.0 in)	14 December 2015

Period of Record Coverage

1893 to 2026

81 years of record at Reedsburg Wwtp, 1893 to 2026. 11 years have data for under 90 percent of days and are left out of rankings: 1893, 1894, 1919, 1944, 1948, 1955, 1991, 2001 and others.

Days with data per year at Reedsburg Wwtp
Year	Days with data	Share of year	Complete
1893	285	78%	No
1894	272	75%	No
1915	365	100%	Yes
1916	362	99%	Yes
1917	356	98%	Yes
1918	363	99%	Yes
1919	315	86%	No
1944	121	33%	No
1945	333	91%	Yes
1946	362	99%	Yes
1947	341	93%	Yes
1948	306	84%	No
1949	363	99%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	363	99%	Yes
1953	333	91%	Yes
1954	349	96%	Yes
1955	312	85%	No
1956	365	100%	Yes
1957	365	100%	Yes
1958	364	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	347	95%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	362	99%	Yes
1967	345	95%	Yes
1968	335	92%	Yes
1969	334	92%	Yes
1970	365	100%	Yes
1971	364	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	363	99%	Yes
1975	362	99%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	363	99%	Yes
1979	363	99%	Yes
1980	366	100%	Yes
1981	364	100%	Yes
1982	360	99%	Yes
1983	360	99%	Yes
1984	359	98%	Yes
1985	363	99%	Yes
1986	354	97%	Yes
1987	348	95%	Yes
1988	345	94%	Yes
1989	349	96%	Yes
1990	365	100%	Yes
1991	304	83%	No
2001	152	42%	No
2002	334	92%	Yes
2003	361	99%	Yes
2004	366	100%	Yes
2005	365	100%	Yes
2006	364	100%	Yes
2007	364	100%	Yes
2008	121	33%	No
2009	306	84%	No
2010	365	100%	Yes
2011	365	100%	Yes
2012	366	100%	Yes
2013	365	100%	Yes
2014	365	100%	Yes
2015	365	100%	Yes
2016	366	100%	Yes
2017	364	100%	Yes
2018	361	99%	Yes
2019	363	99%	Yes
2020	362	99%	Yes
2021	361	99%	Yes
2022	363	99%	Yes
2023	362	99%	Yes
2024	365	100%	Yes
2025	365	100%	Yes
2026	285	78%	No

Latest Records

Latest records at Reedsburg Wwtp
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 October 2026	Reedsburg Wwtp, US	daily high min (Provisional)	14.4 C (57.9 F)	0.5 C (0.9 F)	108 years	40 of 100 (Notable)
1 October 2026	Reedsburg Wwtp, US	daily rain (Provisional)	35.1 mm (1.4 in)	4.6 mm (0.18 in)	19 years	19 of 100 (Routine)
19 September 2026	Reedsburg Wwtp, US	daily rain (Provisional)	47.0 mm (1.9 in)	7.4 mm (0.29 in)	76 years	37 of 100 (Notable)
10 August 2026	Reedsburg Wwtp, US	daily rain	40.4 mm (1.6 in)	12.2 mm (0.5 in)	68 years	37 of 100 (Notable)
6 August 2026	Reedsburg Wwtp, US	daily low max (Tie)	21.1 C (70.0 F)	tie	36 years	5 of 100 (Routine)
1 August 2026	Reedsburg Wwtp, US	daily rain	48.8 mm (1.9 in)	17.0 mm (0.7 in)	80 years	44 of 100 (Notable)
2 July 2026	Reedsburg Wwtp, US	daily rain	61.2 mm (2.4 in)	41.6 mm (1.6 in)	72 years	57 of 100 (Notable)
30 June 2026	Reedsburg Wwtp, US	daily high min	25.6 C (78.1 F)	1.2 C (2.2 F)	8 years	14 of 100 (Routine)
14 May 2026	Reedsburg Wwtp, US	daily low min	0.6 C (33.1 F)	0.5 C (0.9 F)	108 years	40 of 100 (Notable)
8 May 2026	Reedsburg Wwtp, US	daily low min (Tie)	-2.2 C (28.0 F)	tie	79 years	8 of 100 (Routine)
15 April 2026	Reedsburg Wwtp, US	daily high min	14.4 C (57.9 F)	2.2 C (4.0 F)	3 years	14 of 100 (Routine)
14 April 2026	Reedsburg Wwtp, US	daily high min	12.8 C (55.0 F)	1.7 C (3.1 F)	49 years	27 of 100 (Routine)
4 April 2026	Reedsburg Wwtp, US	daily rain	36.8 mm (1.4 in)	1.2 mm (0.05 in)	80 years	35 of 100 (Notable)
2 April 2026	Reedsburg Wwtp, US	daily rain	25.7 mm (1.0 in)	9.4 mm (0.37 in)	48 years	34 of 100 (Routine)
18 March 2026	Reedsburg Wwtp, US	daily low max	-5.0 C (23.0 F)	2.8 C (5.0 F)	36 years	25 of 100 (Routine)
17 March 2026	Reedsburg Wwtp, US	daily low max	-5.0 C (23.0 F)	1.1 C (2.0 F)	59 years	28 of 100 (Routine)
16 March 2026	Reedsburg Wwtp, US	daily snowfall	20.8 cm (8.2 in)	15.2 cm (6.0 in)	55 years	53 of 100 (Notable)
10 March 2026	Reedsburg Wwtp, US	daily high max	22.2 C (72.0 F)	2.2 C (4.0 F)	131 years	43 of 100 (Notable)
17 February 2026	Reedsburg Wwtp, US	daily high max	17.8 C (64.0 F)	1.1 C (2.0 F)	44 years	24 of 100 (Routine)
15 February 2026	Reedsburg Wwtp, US	daily high max	14.4 C (57.9 F)	1.6 C (2.9 F)	50 years	27 of 100 (Routine)

Climate Trend

63 complete years, 1915 to 2025

One stripe for each of 63 complete years at Reedsburg Wwtp, 1915 to 2025. Blue stripes are years cooler than the station's own mean of 7.9 C (46.2 F); red stripes are warmer. The coolest year was 1917, at 5.9 C (42.6 F), and the warmest was 2012, at 10.0 C (50.0 F). The strongest colour marks a difference of 2.2 C (4.0 F).

Annual mean temperature at Reedsburg Wwtp as warming stripes, 1915 to 2025
Year	Annual mean temperature	Difference from the station mean
1915	7.8 C	-0.10 C
1916	7.1 C	-0.77 C
1917	5.9 C	-2.00 C
1918	8.4 C	+0.51 C
1946	9.3 C	+1.41 C
1949	8.9 C	+1.00 C
1950	7.0 C	-0.91 C
1951	6.7 C	-1.17 C
1952	8.4 C	+0.55 C
1954	8.5 C	+0.59 C
1956	7.7 C	-0.23 C
1957	7.9 C	-0.04 C
1958	7.6 C	-0.32 C
1959	7.3 C	-0.57 C
1960	7.7 C	-0.23 C
1961	8.0 C	+0.13 C
1962	7.3 C	-0.59 C
1964	8.6 C	+0.69 C
1965	7.5 C	-0.35 C
1966	7.3 C	-0.56 C
1967	7.1 C	-0.83 C
1970	7.6 C	-0.31 C
1971	7.8 C	-0.10 C
1972	6.5 C	-1.40 C
1973	8.9 C	+1.02 C
1974	7.7 C	-0.21 C
1975	7.9 C	-0.02 C
1976	7.2 C	-0.69 C
1977	8.0 C	+0.10 C
1978	7.1 C	-0.84 C
1979	6.7 C	-1.15 C
1980	7.8 C	-0.14 C
1981	8.3 C	+0.40 C
1982	7.4 C	-0.47 C
1983	8.3 C	+0.42 C
1984	8.2 C	+0.34 C
1985	7.4 C	-0.54 C
1986	8.4 C	+0.55 C
1987	9.7 C	+1.81 C
1988	8.3 C	+0.44 C
1989	7.3 C	-0.61 C
1990	8.9 C	+1.00 C
2003	7.2 C	-0.68 C
2004	7.6 C	-0.33 C
2005	7.9 C	+0.05 C
2006	8.6 C	+0.66 C
2007	8.5 C	+0.56 C
2010	8.6 C	+0.70 C
2011	8.0 C	+0.06 C
2012	10.0 C	+2.10 C
2013	6.8 C	-1.13 C
2014	6.0 C	-1.89 C
2015	8.4 C	+0.50 C
2016	9.1 C	+1.22 C
2017	8.4 C	+0.51 C
2018	7.7 C	-0.21 C
2019	7.1 C	-0.78 C
2020	8.4 C	+0.51 C
2021	8.4 C	+0.52 C
2022	7.0 C	-0.91 C
2023	9.0 C	+1.06 C
2024	9.4 C	+1.51 C
2025	8.0 C	+0.08 C

The fitted trend in annual mean temperature here over 1915 to 2025 is 0.07 C (0.00 to 0.14) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.12 F (-0.01 to 0.25) per decade. The slope is a straight line fitted to 63 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Reedsburg Wwtp
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.07 C (0.00 to 0.14) per decade	0.12 F (-0.01 to 0.25) per decade	1915 to 2025	63	Not clearly different from zero
Mean daily maximum	0.01 C (-0.07 to 0.09) per decade	0.02 F (-0.12 to 0.17) per decade	1915 to 2025	63	Not clearly different from zero
Mean daily minimum	0.12 C (0.04 to 0.20) per decade	0.2 F (0.1 to 0.4) per decade	1915 to 2025	63	Rise

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

1893 to 2026

Yearly extremes at Reedsburg Wwtp: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.0 C (104.0 F)	1988	34.4 C (93.9 F)	81
Coldest night (TNn)	-41.1 C (-42.0 F)	1951	-28.3 C (-18.9 F)	81
Wettest day (Rx1day)	154.2 mm (6.1 in)	2001	62.9 mm (2.5 in)	82
Wettest five days (Rx5day)	282.8 mm (11.1 in)	2008	89.3 mm (3.5 in)	82
Longest dry spell (CDD)	60 days	1948	22 days	82

Hottest day (TXx)

The hottest day of the year at Reedsburg Wwtp, 1893 to 2026. The record is 40.0 C (104.0 F) in 1988, marked on the chart; the median year is 34.4 C (93.9 F).

Hottest day (TXx) at Reedsburg Wwtp by year
Year	Hottest day (TXx)
1893	33.3 C (91.9 F)
1894	38.3 C (100.9 F)
1915	32.2 C (90.0 F)
1916	39.4 C (102.9 F)
1917	35.0 C (95.0 F)
1918	36.7 C (98.1 F)
1919	36.7 C (98.1 F)
1920	n/a
1944	30.0 C (86.0 F)
1945	35.6 C (96.1 F)
1946	36.1 C (97.0 F)
1947	37.2 C (99.0 F)
1948	38.9 C (102.0 F)
1949	35.0 C (95.0 F)
1950	33.3 C (91.9 F)
1951	32.2 C (90.0 F)
1952	34.4 C (93.9 F)
1953	37.2 C (99.0 F)
1954	34.4 C (93.9 F)
1955	38.3 C (100.9 F)
1956	34.4 C (93.9 F)
1957	33.9 C (93.0 F)
1958	35.0 C (95.0 F)
1959	34.4 C (93.9 F)
1960	33.3 C (91.9 F)
1961	33.9 C (93.0 F)
1962	32.8 C (91.0 F)
1963	37.2 C (99.0 F)
1964	38.3 C (100.9 F)
1965	35.6 C (96.1 F)
1966	35.0 C (95.0 F)
1967	32.2 C (90.0 F)
1968	34.4 C (93.9 F)
1969	32.8 C (91.0 F)
1970	34.4 C (93.9 F)
1971	33.3 C (91.9 F)
1972	33.9 C (93.0 F)
1973	35.0 C (95.0 F)
1974	35.6 C (96.1 F)
1975	32.8 C (91.0 F)
1976	36.7 C (98.1 F)
1977	35.6 C (96.1 F)
1978	36.1 C (97.0 F)
1979	33.3 C (91.9 F)
1980	36.7 C (98.1 F)
1981	33.3 C (91.9 F)
1982	34.4 C (93.9 F)
1983	35.0 C (95.0 F)
1984	35.6 C (96.1 F)
1985	33.9 C (93.0 F)
1986	36.7 C (98.1 F)
1987	36.7 C (98.1 F)
1988	40.0 C (104.0 F)
1989	36.7 C (98.1 F)
1990	31.7 C (89.1 F)
1991	32.2 C (90.0 F)
2001	34.4 C (93.9 F)
2002	33.9 C (93.0 F)
2003	34.4 C (93.9 F)
2004	30.6 C (87.1 F)
2005	32.8 C (91.0 F)
2006	35.0 C (95.0 F)
2007	34.4 C (93.9 F)
2008	27.8 C (82.0 F)
2009	36.1 C (97.0 F)
2010	33.9 C (93.0 F)
2011	35.6 C (96.1 F)
2012	38.9 C (102.0 F)
2013	33.9 C (93.0 F)
2014	32.8 C (91.0 F)
2015	34.4 C (93.9 F)
2016	33.9 C (93.0 F)
2017	33.3 C (91.9 F)
2018	34.4 C (93.9 F)
2019	33.9 C (93.0 F)
2020	34.4 C (93.9 F)
2021	35.0 C (95.0 F)
2022	34.4 C (93.9 F)
2023	37.8 C (100.0 F)
2024	34.4 C (93.9 F)
2025	32.8 C (91.0 F)
2026	35.6 C (96.1 F)

Coldest night (TNn)

The coldest night of the year at Reedsburg Wwtp, 1893 to 2026. The record is -41.1 C (-42.0 F) in 1951, marked on the chart; the median year is -28.3 C (-18.9 F).

Coldest night (TNn) at Reedsburg Wwtp by year
Year	Coldest night (TNn)
1893	-35.6 C (-32.1 F)
1894	-30.0 C (-22.0 F)
1915	-36.1 C (-33.0 F)
1916	-33.9 C (-29.0 F)
1917	-35.6 C (-32.1 F)
1918	-40.0 C (-40.0 F)
1919	-30.6 C (-23.1 F)
1920	n/a
1944	-28.3 C (-18.9 F)
1945	-28.3 C (-18.9 F)
1946	-27.2 C (-17.0 F)
1947	-31.7 C (-25.1 F)
1948	-24.4 C (-11.9 F)
1949	-28.3 C (-18.9 F)
1950	-32.2 C (-26.0 F)
1951	-41.1 C (-42.0 F)
1952	-28.3 C (-18.9 F)
1953	-22.2 C (-8.0 F)
1954	-25.6 C (-14.1 F)
1955	-27.2 C (-17.0 F)
1956	-28.3 C (-18.9 F)
1957	-27.8 C (-18.0 F)
1958	-28.9 C (-20.0 F)
1959	-34.4 C (-29.9 F)
1960	-26.1 C (-15.0 F)
1961	-28.3 C (-18.9 F)
1962	-36.7 C (-34.1 F)
1963	-39.4 C (-38.9 F)
1964	-25.0 C (-13.0 F)
1965	-32.8 C (-27.0 F)
1966	-31.1 C (-24.0 F)
1967	-34.4 C (-29.9 F)
1968	-28.3 C (-18.9 F)
1969	-30.0 C (-22.0 F)
1970	-31.1 C (-24.0 F)
1971	-32.8 C (-27.0 F)
1972	-37.8 C (-36.0 F)
1973	-26.7 C (-16.1 F)
1974	-29.4 C (-20.9 F)
1975	-28.9 C (-20.0 F)
1976	-31.1 C (-24.0 F)
1977	-32.8 C (-27.0 F)
1978	-27.8 C (-18.0 F)
1979	-34.4 C (-29.9 F)
1980	-23.9 C (-11.0 F)
1981	-25.6 C (-14.1 F)
1982	-33.3 C (-27.9 F)
1983	-32.2 C (-26.0 F)
1984	-31.1 C (-24.0 F)
1985	-33.9 C (-29.0 F)
1986	-31.1 C (-24.0 F)
1987	-27.2 C (-17.0 F)
1988	-32.8 C (-27.0 F)
1989	-32.8 C (-27.0 F)
1990	-27.8 C (-18.0 F)
1991	-24.4 C (-11.9 F)
2001	-16.7 C (1.9 F)
2002	-28.3 C (-18.9 F)
2003	-23.3 C (-9.9 F)
2004	-26.1 C (-15.0 F)
2005	-26.7 C (-16.1 F)
2006	-29.4 C (-20.9 F)
2007	-27.8 C (-18.0 F)
2008	-25.6 C (-14.1 F)
2009	-11.7 C (10.9 F)
2010	-29.4 C (-20.9 F)
2011	-30.0 C (-22.0 F)
2012	-25.0 C (-13.0 F)
2013	-28.3 C (-18.9 F)
2014	-29.4 C (-20.9 F)
2015	-26.7 C (-16.1 F)
2016	-25.6 C (-14.1 F)
2017	-23.9 C (-11.0 F)
2018	-26.1 C (-15.0 F)
2019	-37.8 C (-36.0 F)
2020	-28.3 C (-18.9 F)
2021	-28.3 C (-18.9 F)
2022	-32.2 C (-26.0 F)
2023	-28.3 C (-18.9 F)
2024	-25.6 C (-14.1 F)
2025	-27.8 C (-18.0 F)
2026	-29.4 C (-20.9 F)

Wettest day (Rx1day)

The wettest day of the year at Reedsburg Wwtp, 1893 to 2026. The record is 154.2 mm (6.1 in) in 2001, marked on the chart; the median year is 62.9 mm (2.5 in).

Wettest day (Rx1day) at Reedsburg Wwtp by year
Year	Wettest day (Rx1day)
1893	41.1 mm (1.6 in)
1894	53.6 mm (2.1 in)
1915	62.2 mm (2.4 in)
1916	83.8 mm (3.3 in)
1917	92.7 mm (3.6 in)
1918	45.7 mm (1.8 in)
1919	41.4 mm (1.6 in)
1920	10.2 mm (0.4 in)
1944	24.4 mm (1.0 in)
1945	49.3 mm (1.9 in)
1946	48.8 mm (1.9 in)
1947	77.7 mm (3.1 in)
1948	49.0 mm (1.9 in)
1949	88.6 mm (3.5 in)
1950	75.4 mm (3.0 in)
1951	68.3 mm (2.7 in)
1952	78.7 mm (3.1 in)
1953	63.5 mm (2.5 in)
1954	91.4 mm (3.6 in)
1955	69.3 mm (2.7 in)
1956	47.2 mm (1.9 in)
1957	34.8 mm (1.4 in)
1958	45.7 mm (1.8 in)
1959	69.6 mm (2.7 in)
1960	52.8 mm (2.1 in)
1961	81.3 mm (3.2 in)
1962	52.3 mm (2.1 in)
1963	48.0 mm (1.9 in)
1964	44.5 mm (1.8 in)
1965	68.1 mm (2.7 in)
1966	41.1 mm (1.6 in)
1967	54.4 mm (2.1 in)
1968	57.2 mm (2.3 in)
1969	45.2 mm (1.8 in)
1970	52.8 mm (2.1 in)
1971	72.6 mm (2.9 in)
1972	64.3 mm (2.5 in)
1973	48.5 mm (1.9 in)
1974	35.3 mm (1.4 in)
1975	96.8 mm (3.8 in)
1976	42.7 mm (1.7 in)
1977	48.3 mm (1.9 in)
1978	74.9 mm (2.9 in)
1979	32.8 mm (1.3 in)
1980	118.1 mm (4.6 in)
1981	69.3 mm (2.7 in)
1982	54.4 mm (2.1 in)
1983	81.3 mm (3.2 in)
1984	52.1 mm (2.1 in)
1985	109.2 mm (4.3 in)
1986	70.6 mm (2.8 in)
1987	45.0 mm (1.8 in)
1988	35.6 mm (1.4 in)
1989	71.4 mm (2.8 in)
1990	71.4 mm (2.8 in)
1991	53.8 mm (2.1 in)
2001	154.2 mm (6.1 in)
2002	70.4 mm (2.8 in)
2003	67.3 mm (2.6 in)
2004	63.5 mm (2.5 in)
2005	44.7 mm (1.8 in)
2006	82.3 mm (3.2 in)
2007	152.7 mm (6.0 in)
2008	135.4 mm (5.3 in)
2009	44.2 mm (1.7 in)
2010	122.2 mm (4.8 in)
2011	38.4 mm (1.5 in)
2012	44.2 mm (1.7 in)
2013	53.1 mm (2.1 in)
2014	67.3 mm (2.6 in)
2015	66.3 mm (2.6 in)
2016	101.9 mm (4.0 in)
2017	95.0 mm (3.7 in)
2018	68.8 mm (2.7 in)
2019	98.3 mm (3.9 in)
2020	118.9 mm (4.7 in)
2021	59.9 mm (2.4 in)
2022	67.1 mm (2.6 in)
2023	36.8 mm (1.4 in)
2024	49.3 mm (1.9 in)
2025	64.0 mm (2.5 in)
2026	61.2 mm (2.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Reedsburg Wwtp, 1893 to 2026. The record is 282.8 mm (11.1 in) in 2008, marked on the chart; the median year is 89.3 mm (3.5 in).

Wettest five days (Rx5day) at Reedsburg Wwtp by year
Year	Wettest five days (Rx5day)
1893	141.4 mm (5.6 in)
1894	74.2 mm (2.9 in)
1915	98.3 mm (3.9 in)
1916	109.2 mm (4.3 in)
1917	120.4 mm (4.7 in)
1918	71.2 mm (2.8 in)
1919	74.9 mm (2.9 in)
1920	24.5 mm (1.0 in)
1944	52.6 mm (2.1 in)
1945	81.1 mm (3.2 in)
1946	47.0 mm (1.9 in)
1947	49.5 mm (1.9 in)
1948	66.6 mm (2.6 in)
1949	113.2 mm (4.5 in)
1950	132.1 mm (5.2 in)
1951	74.7 mm (2.9 in)
1952	150.7 mm (5.9 in)
1953	127.6 mm (5.0 in)
1954	103.2 mm (4.1 in)
1955	72.6 mm (2.9 in)
1956	61.5 mm (2.4 in)
1957	64.2 mm (2.5 in)
1958	53.6 mm (2.1 in)
1959	109.4 mm (4.3 in)
1960	112.5 mm (4.4 in)
1961	104.2 mm (4.1 in)
1962	68.8 mm (2.7 in)
1963	69.5 mm (2.7 in)
1964	49.8 mm (2.0 in)
1965	137.3 mm (5.4 in)
1966	58.9 mm (2.3 in)
1967	97.2 mm (3.8 in)
1968	100.1 mm (3.9 in)
1969	122.4 mm (4.8 in)
1970	79.2 mm (3.1 in)
1971	98.7 mm (3.9 in)
1972	65.6 mm (2.6 in)
1973	70.9 mm (2.8 in)
1974	57.4 mm (2.3 in)
1975	130.6 mm (5.1 in)
1976	103.2 mm (4.1 in)
1977	57.2 mm (2.3 in)
1978	116.4 mm (4.6 in)
1979	63.5 mm (2.5 in)
1980	178.0 mm (7.0 in)
1981	86.6 mm (3.4 in)
1982	91.4 mm (3.6 in)
1983	84.5 mm (3.3 in)
1984	67.0 mm (2.6 in)
1985	133.8 mm (5.3 in)
1986	87.1 mm (3.4 in)
1987	71.9 mm (2.8 in)
1988	83.3 mm (3.3 in)
1989	117.4 mm (4.6 in)
1990	102.4 mm (4.0 in)
1991	70.4 mm (2.8 in)
2001	154.2 mm (6.1 in)
2002	81.1 mm (3.2 in)
2003	80.8 mm (3.2 in)
2004	135.6 mm (5.3 in)
2005	82.3 mm (3.2 in)
2006	107.1 mm (4.2 in)
2007	184.1 mm (7.2 in)
2008	282.8 mm (11.1 in)
2009	68.1 mm (2.7 in)
2010	128.7 mm (5.1 in)
2011	65.7 mm (2.6 in)
2012	75.1 mm (3.0 in)
2013	86.6 mm (3.4 in)
2014	136.2 mm (5.4 in)
2015	113.9 mm (4.5 in)
2016	123.4 mm (4.9 in)
2017	150.1 mm (5.9 in)
2018	139.4 mm (5.5 in)
2019	130.8 mm (5.1 in)
2020	124.0 mm (4.9 in)
2021	70.5 mm (2.8 in)
2022	72.7 mm (2.9 in)
2023	66.3 mm (2.6 in)
2024	96.8 mm (3.8 in)
2025	115.2 mm (4.5 in)
2026	96.0 mm (3.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Reedsburg Wwtp, 1893 to 2026. The record is 60 days in 1948, marked on the chart; the median year is 22 days.

Longest dry spell (CDD) at Reedsburg Wwtp by year
Year	Longest dry spell (CDD)
1893	15 days
1894	25 days
1915	29 days
1916	44 days
1917	28 days
1918	30 days
1919	32 days
1920	12 days
1944	25 days
1945	23 days
1946	14 days
1947	19 days
1948	60 days
1949	28 days
1950	25 days
1951	15 days
1952	30 days
1953	31 days
1954	22 days
1955	20 days
1956	19 days
1957	23 days
1958	26 days
1959	28 days
1960	26 days
1961	23 days
1962	16 days
1963	28 days
1964	30 days
1965	15 days
1966	24 days
1967	19 days
1968	30 days
1969	25 days
1970	34 days
1971	21 days
1972	19 days
1973	24 days
1974	15 days
1975	17 days
1976	26 days
1977	17 days
1978	28 days
1979	19 days
1980	17 days
1981	28 days
1982	25 days
1983	20 days
1984	21 days
1985	16 days
1986	23 days
1987	22 days
1988	45 days
1989	29 days
1990	13 days
1991	23 days
2001	15 days
2002	20 days
2003	23 days
2004	19 days
2005	16 days
2006	19 days
2007	21 days
2008	15 days
2009	20 days
2010	28 days
2011	14 days
2012	22 days
2013	18 days
2014	12 days
2015	46 days
2016	14 days
2017	19 days
2018	19 days
2019	26 days
2020	20 days
2021	19 days
2022	17 days
2023	22 days
2024	20 days
2025	22 days
2026	27 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

63 years with a frost

Across 63 years with a frost, the median last spring frost at Reedsburg Wwtp falls on 10 May and the median first autumn frost on 1 October, which leaves a median of 145 days between them.

In 1982 to 2025 the median growing season was 152 days. That is 12 days more than in 1915 to 1978.

Fitted over all years, the growing season changes by +2.3 days per decade at this station.

Frost dates and growing season at Reedsburg Wwtp
Measure	Median, all years	Earliest period (1915 to 1978)	Recent period (1982 to 2025)	Recent against earliest	Fitted trend
Last spring frost	10 May	11 May	6 May	5 days earlier	-0.5 days per decade
First autumn frost	1 October	28 September	6 October	8 days later	+1.8 days per decade
Growing days	145 days	140 days	152 days	12 days more	+2.3 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

69 years, 1915 to 2025

A day with at least 61.4 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 148.7 mm (5.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Reedsburg Wwtp: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	61.4 mm (2.4 in)
5 years	82.6 mm (3.3 in)
10 years	97.5 mm (3.8 in)
25 years	117.3 mm (4.6 in)
50 years	132.7 mm (5.2 in)
100 years	148.7 mm (5.9 in)	Longer than the 69 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, 69 years of values from 1915 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: 152.7 mm (6.0 in) in 2007; 122.2 mm (4.8 in) in 2010; 118.9 mm (4.7 in) in 2020.

Station Changes

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

Climate Twins

2011 to 2025 against 1961 to 1990

Over 2011 to 2025, Reedsburg Wwtp had a mean temperature of 8.1 C (46.6 F) and 961.1 mm (37.8 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Whitehall (United States, 1,336 km away), Paw Paw 2S (United States, 223 km away) and Antioch (United States, 193 km away).

Climate twins of Reedsburg Wwtp: stations whose 1961 to 1990 climate is closest to its 2011 to 2025 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Whitehall	United States	1,336 km (830 mi)	8.4 C (47.1 F)	959.5 mm (37.8 in)	0.65
Paw Paw 2S	United States	223 km (139 mi)	8.4 C (47.1 F)	907.5 mm (35.7 in)	0.68
Antioch	United States	193 km (120 mi)	8.1 C (46.6 F)	913.4 mm (36.0 in)	0.76

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

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