Madison Wwtp Weather Records (USC00214994)

Record envelope, standing records and threshold days for Madison Wwtp (USC00214994), Minnesota, United States, with 87 years of record.

Key Facts for Madison Wwtp

Madison Wwtp (USC00214994) is a weather station in Minnesota, United States at 45.00 latitude and -96.17 longitude, 328 m (1,075 ft) above sea level.
The station reports from 1940 to 2026, 87 years of record.
1,464 records set at Madison Wwtp still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Madison Wwtp set a daily record high maximum temperature of 33.3 C (91.9 F) on 10 October 2026 (provisional).

Provisional Records

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

About the Station

Location: Minnesota, United States, 45.00 latitude, -96.17 longitude.
Elevation: 328 m (1,075 ft).
Period of record: 1940 to 2026, 87 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

9 days at or beyond a record

The band shows the record high and record low for each calendar day at Madison Wwtp. The lines show the 2026 daily maximum and minimum. 9 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Madison Wwtp, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	19.4 C (66.9 F)	-37.2 C (-35.0 F)	11.1 C (52.0 F)	-29.4 C (-20.9 F)
Feb	18.9 C (66.0 F)	-37.8 C (-36.0 F)	16.1 C (61.0 F)	-20.6 C (-5.1 F)
Mar	28.9 C (84.0 F)	-30.6 C (-23.1 F)	23.9 C (75.0 F)	-20.0 C (-4.0 F)
Apr	35.6 C (96.1 F)	-17.8 C (0.0 F)	33.9 C (93.0 F)	-10.0 C (14.0 F)
May	38.9 C (102.0 F)	-6.7 C (19.9 F)	35.0 C (95.0 F)	-2.2 C (28.0 F)
Jun	40.6 C (105.1 F)	0.0 C (32.0 F)	33.3 C (91.9 F)	8.9 C (48.0 F)
Jul	43.3 C (109.9 F)	4.4 C (39.9 F)	36.1 C (97.0 F)	9.4 C (48.9 F)
Aug	43.3 C (109.9 F)	1.1 C (34.0 F)	30.6 C (87.1 F)	7.8 C (46.0 F)
Sep	37.8 C (100.0 F)	-8.3 C (17.1 F)	35.0 C (95.0 F)	6.1 C (43.0 F)
Oct	35.6 C (96.1 F)	-15.6 C (3.9 F)	33.3 C (91.9 F)	1.7 C (35.1 F)
Nov	27.2 C (81.0 F)	-27.8 C (-18.0 F)	n/a	n/a
Dec	17.2 C (63.0 F)	-37.2 C (-35.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Madison Wwtp still stand. 1988 holds the most, with 45.

Standing records at Madison Wwtp by the year they were set
Year set	Standing records
1940	24
1941	16
1942	24
1943	13
1944	18
1945	17
1946	14
1947	31
1948	18
1949	14
1950	25
1951	21
1952	14
1953	19
1954	9
1955	17
1956	10
1957	6
1958	18
1959	17
1960	13
1961	15
1962	26
1963	23
1964	26
1965	24
1966	20
1967	17
1968	20
1969	19
1970	20
1971	13
1972	21
1973	13
1974	20
1975	14
1976	30
1977	19
1978	13
1979	15
1980	6
1981	19
1982	8
1983	24
1984	14
1985	1
1986	7
1987	22
1988	45
1989	19
1990	30
1991	29
1992	27
1993	13
1994	14
1995	8
1996	12
1997	13
1998	15
1999	9
2000	30
2001	10
2002	7
2003	14
2004	17
2005	13
2006	9
2007	17
2008	4
2009	16
2010	8
2011	9
2012	26
2013	19
2014	22
2015	16
2016	10
2017	14
2018	20
2019	17
2020	22
2021	23
2022	13
2023	13
2024	7
2025	18
2026	9

All-Time Record Progression

18 new records

18 all-time records were set at Madison Wwtp between 18 January 1970 and 11 August 2016. Each dot is a new record.

Wettest Day of Each Month

Aug: 117.6 mm (4.6 in)

The wettest day on record for each calendar month at Madison Wwtp. The most was 117.6 mm (4.6 in) on 11 August 2016.

Record daily precipitation for each month at Madison Wwtp
Month	Record daily precipitation (mm)	Date
Jan	45.7 mm (1.8 in)	4 January 1997
Feb	52.1 mm (2.1 in)	23 February 1977
Mar	83.8 mm (3.3 in)	12 March 1977
Apr	72.9 mm (2.9 in)	5 April 1997
May	83.3 mm (3.3 in)	23 May 1946
Jun	113.5 mm (4.5 in)	17 June 1992
Jul	94.2 mm (3.7 in)	29 July 1989
Aug	117.6 mm (4.6 in)	11 August 2016
Sep	85.1 mm (3.4 in)	19 September 1957
Oct	80.5 mm (3.2 in)	14 October 1984
Nov	49.3 mm (1.9 in)	19 November 2024
Dec	42.2 mm (1.7 in)	28 December 1959

Period of Record Coverage

1940 to 2026

87 years of record at Madison Wwtp, 1940 to 2026. 12 years have data for under 90 percent of days and are left out of rankings: 1940, 1943, 1979, 1985, 1986, 1987, 1988, 1996 and others.

Days with data per year at Madison Wwtp
Year	Days with data	Share of year	Complete
1940	245	67%	No
1941	365	100%	Yes
1942	365	100%	Yes
1943	225	62%	No
1944	366	100%	Yes
1945	365	100%	Yes
1946	365	100%	Yes
1947	365	100%	Yes
1948	366	100%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	362	99%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	364	100%	Yes
1958	365	100%	Yes
1959	364	100%	Yes
1960	364	99%	Yes
1961	364	100%	Yes
1962	364	100%	Yes
1963	365	100%	Yes
1964	333	91%	Yes
1965	359	98%	Yes
1966	365	100%	Yes
1967	363	99%	Yes
1968	366	100%	Yes
1969	353	97%	Yes
1970	363	99%	Yes
1971	364	100%	Yes
1972	363	99%	Yes
1973	365	100%	Yes
1974	355	97%	Yes
1975	364	100%	Yes
1976	363	99%	Yes
1977	352	96%	Yes
1978	363	99%	Yes
1979	299	82%	No
1980	333	91%	Yes
1981	362	99%	Yes
1982	363	99%	Yes
1983	360	99%	Yes
1984	363	99%	Yes
1985	90	25%	No
1986	300	82%	No
1987	270	74%	No
1988	302	83%	No
1989	365	100%	Yes
1990	365	100%	Yes
1991	364	100%	Yes
1992	366	100%	Yes
1993	361	99%	Yes
1994	363	99%	Yes
1995	363	99%	Yes
1996	273	75%	No
1997	360	99%	Yes
1998	363	99%	Yes
1999	361	99%	Yes
2000	364	99%	Yes
2001	360	99%	Yes
2002	273	75%	No
2003	333	91%	Yes
2004	335	92%	Yes
2005	303	83%	No
2006	365	100%	Yes
2007	364	100%	Yes
2008	364	99%	Yes
2009	364	100%	Yes
2010	363	99%	Yes
2011	363	99%	Yes
2012	366	100%	Yes
2013	365	100%	Yes
2014	365	100%	Yes
2015	365	100%	Yes
2016	364	99%	Yes
2017	365	100%	Yes
2018	364	100%	Yes
2019	365	100%	Yes
2020	363	99%	Yes
2021	365	100%	Yes
2022	364	100%	Yes
2023	365	100%	Yes
2024	365	100%	Yes
2025	322	88%	No
2026	281	77%	No

Latest Records

Latest records at Madison Wwtp
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
10 October 2026	Madison Wwtp, US	daily high max (Provisional)	33.3 C (91.9 F)	0.5 C (0.9 F)	71 years	29 of 100 (Routine)
28 September 2026	Madison Wwtp, US	daily high min (Tie, Provisional)	15.6 C (60.1 F)	tie	31 years	4 of 100 (Routine)
5 August 2026	Madison Wwtp, US	daily low max (Tie)	21.7 C (71.1 F)	tie	32 years	4 of 100 (Routine)
31 July 2026	Madison Wwtp, US	daily rain	62.5 mm (2.5 in)	2.8 mm (0.11 in)	72 years	31 of 100 (Routine)
30 May 2026	Madison Wwtp, US	daily high min	20.0 C (68.0 F)	0.6 C (1.1 F)	37 years	20 of 100 (Routine)
26 May 2026	Madison Wwtp, US	daily high max	35.0 C (95.0 F)	0.6 C (1.1 F)	8 years	10 of 100 (Routine)
23 April 2026	Madison Wwtp, US	daily high max (Tie)	33.9 C (93.0 F)	tie	16 years	3 of 100 (Routine)
17 April 2026	Madison Wwtp, US	daily high max	31.1 C (88.0 F)	0.5 C (0.9 F)	61 years	26 of 100 (Routine)
22 March 2026	Madison Wwtp, US	daily high max (Tie)	23.9 C (75.0 F)	tie	80 years	8 of 100 (Routine)
17 March 2026	Madison Wwtp, US	daily low max	-10.6 C (12.9 F)	0.6 C (1.1 F)	12 years	11 of 100 (Routine)
9 March 2026	Madison Wwtp, US	daily high max	19.4 C (66.9 F)	5.0 C (9.0 F)	5 years	15 of 100 (Routine)
15 February 2026	Madison Wwtp, US	daily high max	14.4 C (57.9 F)	3.8 C (6.8 F)	44 years	25 of 100 (Routine)
14 February 2026	Madison Wwtp, US	daily high max	13.3 C (55.9 F)	1.6 C (2.9 F)	27 years	18 of 100 (Routine)
13 February 2026	Madison Wwtp, US	daily high max	12.2 C (54.0 F)	1.1 C (2.0 F)	79 years	32 of 100 (Routine)
24 January 2026	Madison Wwtp, US	daily low max	-22.8 C (-9.0 F)	2.2 C (4.0 F)	60 years	28 of 100 (Routine)
28 December 2025	Madison Wwtp, US	daily high max	10.6 C (51.1 F)	1.7 C (3.1 F)	51 years	25 of 100 (Routine)
10 December 2025	Madison Wwtp, US	daily rain	6.1 mm (0.24 in)	2.8 mm (0.11 in)	10 years	15 of 100 (Routine)
5 October 2025	Madison Wwtp, US	monthly high min (Tie)	20.0 C (68.0 F)	tie	68 years	9 of 100 (Routine)
4 October 2025	Madison Wwtp, US	daily high max	33.3 C (91.9 F)	2.7 C (4.9 F)	50 years	26 of 100 (Routine)
4 October 2025	Madison Wwtp, US	daily high min	16.7 C (62.1 F)	3.9 C (7.0 F)	2 years	15 of 100 (Routine)

Climate Trend

72 complete years, 1941 to 2025

One stripe for each of 72 complete years at Madison Wwtp, 1941 to 2025. Blue stripes are years cooler than the station's own mean of 7.2 C (44.9 F); red stripes are warmer. The coolest year was 2019, at 5.0 C (41.0 F), and the warmest was 1990, at 9.3 C (48.7 F). The strongest colour marks a difference of 2.2 C (4.0 F).

Annual mean temperature at Madison Wwtp as warming stripes, 1941 to 2025
Year	Annual mean temperature	Difference from the station mean
1941	8.3 C	+1.09 C
1942	6.9 C	-0.32 C
1944	8.1 C	+0.88 C
1945	6.5 C	-0.69 C
1946	7.4 C	+0.21 C
1947	7.2 C	+0.02 C
1948	7.2 C	+0.03 C
1949	7.7 C	+0.51 C
1950	5.4 C	-1.77 C
1951	5.3 C	-1.91 C
1952	7.4 C	+0.22 C
1953	8.1 C	+0.89 C
1954	7.6 C	+0.45 C
1955	7.0 C	-0.19 C
1956	6.9 C	-0.25 C
1957	7.4 C	+0.18 C
1958	7.6 C	+0.46 C
1959	7.3 C	+0.17 C
1960	7.0 C	-0.22 C
1961	7.5 C	+0.35 C
1962	7.1 C	-0.10 C
1963	7.9 C	+0.74 C
1965	6.3 C	-0.83 C
1966	6.3 C	-0.89 C
1967	6.8 C	-0.38 C
1968	7.5 C	+0.30 C
1969	6.1 C	-1.10 C
1970	6.4 C	-0.76 C
1971	6.6 C	-0.54 C
1972	5.9 C	-1.23 C
1973	8.4 C	+1.19 C
1974	7.1 C	-0.12 C
1975	6.5 C	-0.64 C
1976	8.1 C	+0.88 C
1977	7.8 C	+0.60 C
1978	6.5 C	-0.65 C
1981	8.3 C	+1.15 C
1982	6.4 C	-0.73 C
1983	7.3 C	+0.10 C
1984	7.7 C	+0.48 C
1989	7.8 C	+0.63 C
1990	9.3 C	+2.09 C
1991	8.5 C	+1.31 C
1992	7.5 C	+0.29 C
1993	5.8 C	-1.35 C
1994	7.2 C	+0.02 C
1995	7.7 C	+0.55 C
1997	7.3 C	+0.16 C
1998	9.0 C	+1.78 C
1999	8.5 C	+1.28 C
2000	6.2 C	-0.96 C
2001	6.4 C	-0.81 C
2006	8.2 C	+1.01 C
2007	7.5 C	+0.29 C
2008	5.9 C	-1.23 C
2009	6.0 C	-1.22 C
2010	7.0 C	-0.21 C
2011	6.7 C	-0.46 C
2012	8.9 C	+1.70 C
2013	5.3 C	-1.86 C
2014	5.4 C	-1.73 C
2015	8.2 C	+1.02 C
2016	8.7 C	+1.52 C
2017	7.6 C	+0.41 C
2018	5.9 C	-1.27 C
2019	5.0 C	-2.15 C
2020	7.2 C	+0.02 C
2021	8.0 C	+0.78 C
2022	5.8 C	-1.37 C
2023	7.4 C	+0.18 C
2024	8.5 C	+1.36 C
2025	7.5 C	+0.32 C

The fitted trend in annual mean temperature here over 1941 to 2025 is 0.00 C (-0.09 to 0.09) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.00 F (-0.16 to 0.16) per decade. The slope is a straight line fitted to 72 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Madison Wwtp
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.00 C (-0.09 to 0.09) per decade	0.00 F (-0.16 to 0.16) per decade	1941 to 2025	72	Not clearly different from zero
Mean daily maximum	-0.1 C (-0.2 to 0.1) per decade	-0.1 F (-0.3 to 0.1) per decade	1941 to 2025	72	Not clearly different from zero
Mean daily minimum	0.06 C (-0.03 to 0.15) per decade	0.11 F (-0.05 to 0.27) per decade	1941 to 2025	72	Not 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

1940 to 2026

Yearly extremes at Madison Wwtp: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.3 C (109.9 F)	1988	37.2 C (99.0 F)	87
Coldest night (TNn)	-37.8 C (-36.0 F)	1994	-30.6 C (-23.1 F)	87
Wettest day (Rx1day)	117.6 mm (4.6 in)	2016	53.6 mm (2.1 in)	87
Wettest five days (Rx5day)	166.6 mm (6.6 in)	1992	81.8 mm (3.2 in)	87
Longest dry spell (CDD)	72 days	2008	31 days	87

Hottest day (TXx)

The hottest day of the year at Madison Wwtp, 1940 to 2026. The record is 43.3 C (109.9 F) in 1988, marked on the chart; the median year is 37.2 C (99.0 F).

Hottest day (TXx) at Madison Wwtp by year
Year	Hottest day (TXx)
1940	42.8 C (109.0 F)
1941	41.1 C (106.0 F)
1942	36.1 C (97.0 F)
1943	36.1 C (97.0 F)
1944	36.7 C (98.1 F)
1945	37.2 C (99.0 F)
1946	36.7 C (98.1 F)
1947	40.0 C (104.0 F)
1948	37.8 C (100.0 F)
1949	38.9 C (102.0 F)
1950	36.1 C (97.0 F)
1951	35.0 C (95.0 F)
1952	36.1 C (97.0 F)
1953	36.1 C (97.0 F)
1954	37.2 C (99.0 F)
1955	38.3 C (100.9 F)
1956	37.2 C (99.0 F)
1957	38.9 C (102.0 F)
1958	37.2 C (99.0 F)
1959	39.4 C (102.9 F)
1960	38.3 C (100.9 F)
1961	37.2 C (99.0 F)
1962	35.6 C (96.1 F)
1963	37.2 C (99.0 F)
1964	37.8 C (100.0 F)
1965	39.4 C (102.9 F)
1966	39.4 C (102.9 F)
1967	35.6 C (96.1 F)
1968	36.7 C (98.1 F)
1969	36.7 C (98.1 F)
1970	35.0 C (95.0 F)
1971	37.2 C (99.0 F)
1972	36.1 C (97.0 F)
1973	36.1 C (97.0 F)
1974	36.7 C (98.1 F)
1975	38.3 C (100.9 F)
1976	40.6 C (105.1 F)
1977	39.4 C (102.9 F)
1978	37.2 C (99.0 F)
1979	38.3 C (100.9 F)
1980	36.7 C (98.1 F)
1981	36.7 C (98.1 F)
1982	37.2 C (99.0 F)
1983	38.3 C (100.9 F)
1984	37.2 C (99.0 F)
1985	18.9 C (66.0 F)
1986	35.6 C (96.1 F)
1987	37.8 C (100.0 F)
1988	43.3 C (109.9 F)
1989	37.8 C (100.0 F)
1990	38.9 C (102.0 F)
1991	36.7 C (98.1 F)
1992	34.4 C (93.9 F)
1993	34.4 C (93.9 F)
1994	34.4 C (93.9 F)
1995	36.7 C (98.1 F)
1996	35.0 C (95.0 F)
1997	35.0 C (95.0 F)
1998	35.6 C (96.1 F)
1999	36.1 C (97.0 F)
2000	37.8 C (100.0 F)
2001	36.7 C (98.1 F)
2002	36.7 C (98.1 F)
2003	37.8 C (100.0 F)
2004	35.0 C (95.0 F)
2005	36.1 C (97.0 F)
2006	37.8 C (100.0 F)
2007	36.7 C (98.1 F)
2008	35.6 C (96.1 F)
2009	38.3 C (100.9 F)
2010	35.6 C (96.1 F)
2011	37.8 C (100.0 F)
2012	37.8 C (100.0 F)
2013	35.0 C (95.0 F)
2014	33.3 C (91.9 F)
2015	37.2 C (99.0 F)
2016	37.8 C (100.0 F)
2017	35.6 C (96.1 F)
2018	38.9 C (102.0 F)
2019	33.9 C (93.0 F)
2020	37.2 C (99.0 F)
2021	38.9 C (102.0 F)
2022	37.8 C (100.0 F)
2023	37.8 C (100.0 F)
2024	32.8 C (91.0 F)
2025	37.2 C (99.0 F)
2026	36.1 C (97.0 F)

Coldest night (TNn)

The coldest night of the year at Madison Wwtp, 1940 to 2026. The record is -37.8 C (-36.0 F) in 1994, marked on the chart; the median year is -30.6 C (-23.1 F).

Coldest night (TNn) at Madison Wwtp by year
Year	Coldest night (TNn)
1940	-27.8 C (-18.0 F)
1941	-26.7 C (-16.1 F)
1942	-31.1 C (-24.0 F)
1943	-24.4 C (-11.9 F)
1944	-27.8 C (-18.0 F)
1945	-29.4 C (-20.9 F)
1946	-28.9 C (-20.0 F)
1947	-26.7 C (-16.1 F)
1948	-32.2 C (-26.0 F)
1949	-29.4 C (-20.9 F)
1950	-31.7 C (-25.1 F)
1951	-35.0 C (-31.0 F)
1952	-30.6 C (-23.1 F)
1953	-28.9 C (-20.0 F)
1954	-33.3 C (-27.9 F)
1955	-32.2 C (-26.0 F)
1956	-29.4 C (-20.9 F)
1957	-29.4 C (-20.9 F)
1958	-30.0 C (-22.0 F)
1959	-29.4 C (-20.9 F)
1960	-29.4 C (-20.9 F)
1961	-31.7 C (-25.1 F)
1962	-35.6 C (-32.1 F)
1963	-31.7 C (-25.1 F)
1964	-27.8 C (-18.0 F)
1965	-32.2 C (-26.0 F)
1966	-32.2 C (-26.0 F)
1967	-34.4 C (-29.9 F)
1968	-30.6 C (-23.1 F)
1969	-30.6 C (-23.1 F)
1970	-37.2 C (-35.0 F)
1971	-30.6 C (-23.1 F)
1972	-33.9 C (-29.0 F)
1973	-37.2 C (-35.0 F)
1974	-35.0 C (-31.0 F)
1975	-31.7 C (-25.1 F)
1976	-32.2 C (-26.0 F)
1977	-35.6 C (-32.1 F)
1978	-31.7 C (-25.1 F)
1979	-33.9 C (-29.0 F)
1980	-28.3 C (-18.9 F)
1981	-33.3 C (-27.9 F)
1982	-35.6 C (-32.1 F)
1983	-33.9 C (-29.0 F)
1984	-29.4 C (-20.9 F)
1985	-33.9 C (-29.0 F)
1986	-30.6 C (-23.1 F)
1987	-29.4 C (-20.9 F)
1988	-31.7 C (-25.1 F)
1989	-32.2 C (-26.0 F)
1990	-31.1 C (-24.0 F)
1991	-25.6 C (-14.1 F)
1992	-27.8 C (-18.0 F)
1993	-32.2 C (-26.0 F)
1994	-37.8 C (-36.0 F)
1995	-28.3 C (-18.9 F)
1996	-36.1 C (-33.0 F)
1997	-28.3 C (-18.9 F)
1998	-31.1 C (-24.0 F)
1999	-30.6 C (-23.1 F)
2000	-30.6 C (-23.1 F)
2001	-31.1 C (-24.0 F)
2002	-22.2 C (-8.0 F)
2003	-29.4 C (-20.9 F)
2004	-31.1 C (-24.0 F)
2005	-31.7 C (-25.1 F)
2006	-26.7 C (-16.1 F)
2007	-27.2 C (-17.0 F)
2008	-30.6 C (-23.1 F)
2009	-34.4 C (-29.9 F)
2010	-36.1 C (-33.0 F)
2011	-31.1 C (-24.0 F)
2012	-25.0 C (-13.0 F)
2013	-28.9 C (-20.0 F)
2014	-30.6 C (-23.1 F)
2015	-27.2 C (-17.0 F)
2016	-33.9 C (-29.0 F)
2017	-31.1 C (-24.0 F)
2018	-29.4 C (-20.9 F)
2019	-35.0 C (-31.0 F)
2020	-29.4 C (-20.9 F)
2021	-31.7 C (-25.1 F)
2022	-29.4 C (-20.9 F)
2023	-30.0 C (-22.0 F)
2024	-27.8 C (-18.0 F)
2025	-30.6 C (-23.1 F)
2026	-29.4 C (-20.9 F)

Wettest day (Rx1day)

The wettest day of the year at Madison Wwtp, 1940 to 2026. The record is 117.6 mm (4.6 in) in 2016, marked on the chart; the median year is 53.6 mm (2.1 in).

Wettest day (Rx1day) at Madison Wwtp by year
Year	Wettest day (Rx1day)
1940	75.7 mm (3.0 in)
1941	53.8 mm (2.1 in)
1942	61.5 mm (2.4 in)
1943	49.0 mm (1.9 in)
1944	50.8 mm (2.0 in)
1945	59.4 mm (2.3 in)
1946	83.3 mm (3.3 in)
1947	55.6 mm (2.2 in)
1948	75.2 mm (3.0 in)
1949	60.2 mm (2.4 in)
1950	38.1 mm (1.5 in)
1951	45.5 mm (1.8 in)
1952	53.3 mm (2.1 in)
1953	66.5 mm (2.6 in)
1954	62.2 mm (2.4 in)
1955	65.5 mm (2.6 in)
1956	77.0 mm (3.0 in)
1957	85.1 mm (3.4 in)
1958	30.2 mm (1.2 in)
1959	42.2 mm (1.7 in)
1960	50.8 mm (2.0 in)
1961	33.0 mm (1.3 in)
1962	80.5 mm (3.2 in)
1963	52.1 mm (2.1 in)
1964	42.7 mm (1.7 in)
1965	66.5 mm (2.6 in)
1966	54.6 mm (2.1 in)
1967	38.1 mm (1.5 in)
1968	39.6 mm (1.6 in)
1969	38.1 mm (1.5 in)
1970	44.5 mm (1.8 in)
1971	90.2 mm (3.6 in)
1972	58.4 mm (2.3 in)
1973	50.8 mm (2.0 in)
1974	48.3 mm (1.9 in)
1975	57.2 mm (2.3 in)
1976	25.4 mm (1.0 in)
1977	83.8 mm (3.3 in)
1978	42.9 mm (1.7 in)
1979	63.0 mm (2.5 in)
1980	49.0 mm (1.9 in)
1981	53.8 mm (2.1 in)
1982	40.4 mm (1.6 in)
1983	41.1 mm (1.6 in)
1984	80.5 mm (3.2 in)
1985	17.8 mm (0.7 in)
1986	71.1 mm (2.8 in)
1987	35.3 mm (1.4 in)
1988	34.0 mm (1.3 in)
1989	94.2 mm (3.7 in)
1990	67.1 mm (2.6 in)
1991	62.2 mm (2.4 in)
1992	113.5 mm (4.5 in)
1993	49.8 mm (2.0 in)
1994	53.6 mm (2.1 in)
1995	77.5 mm (3.1 in)
1996	64.0 mm (2.5 in)
1997	72.9 mm (2.9 in)
1998	42.7 mm (1.7 in)
1999	41.7 mm (1.6 in)
2000	39.4 mm (1.6 in)
2001	56.6 mm (2.2 in)
2002	27.4 mm (1.1 in)
2003	29.0 mm (1.1 in)
2004	41.9 mm (1.6 in)
2005	33.3 mm (1.3 in)
2006	39.6 mm (1.6 in)
2007	53.6 mm (2.1 in)
2008	50.8 mm (2.0 in)
2009	66.3 mm (2.6 in)
2010	42.2 mm (1.7 in)
2011	49.8 mm (2.0 in)
2012	28.2 mm (1.1 in)
2013	41.1 mm (1.6 in)
2014	63.5 mm (2.5 in)
2015	102.4 mm (4.0 in)
2016	117.6 mm (4.6 in)
2017	58.4 mm (2.3 in)
2018	40.6 mm (1.6 in)
2019	57.2 mm (2.3 in)
2020	29.2 mm (1.1 in)
2021	71.1 mm (2.8 in)
2022	65.0 mm (2.6 in)
2023	57.2 mm (2.3 in)
2024	49.3 mm (1.9 in)
2025	48.8 mm (1.9 in)
2026	62.5 mm (2.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Madison Wwtp, 1940 to 2026. The record is 166.6 mm (6.6 in) in 1992, marked on the chart; the median year is 81.8 mm (3.2 in).

Wettest five days (Rx5day) at Madison Wwtp by year
Year	Wettest five days (Rx5day)
1940	84.4 mm (3.3 in)
1941	73.6 mm (2.9 in)
1942	92.2 mm (3.6 in)
1943	81.8 mm (3.2 in)
1944	65.0 mm (2.6 in)
1945	87.7 mm (3.5 in)
1946	106.4 mm (4.2 in)
1947	80.8 mm (3.2 in)
1948	95.1 mm (3.7 in)
1949	67.8 mm (2.7 in)
1950	73.3 mm (2.9 in)
1951	69.9 mm (2.8 in)
1952	116.5 mm (4.6 in)
1953	98.5 mm (3.9 in)
1954	76.9 mm (3.0 in)
1955	75.2 mm (3.0 in)
1956	123.8 mm (4.9 in)
1957	92.4 mm (3.6 in)
1958	37.9 mm (1.5 in)
1959	81.8 mm (3.2 in)
1960	117.6 mm (4.6 in)
1961	62.2 mm (2.4 in)
1962	102.5 mm (4.0 in)
1963	82.0 mm (3.2 in)
1964	76.7 mm (3.0 in)
1965	125.3 mm (4.9 in)
1966	60.2 mm (2.4 in)
1967	111.5 mm (4.4 in)
1968	87.6 mm (3.4 in)
1969	39.6 mm (1.6 in)
1970	101.7 mm (4.0 in)
1971	99.9 mm (3.9 in)
1972	86.7 mm (3.4 in)
1973	82.5 mm (3.2 in)
1974	90.2 mm (3.6 in)
1975	80.0 mm (3.1 in)
1976	29.2 mm (1.1 in)
1977	96.5 mm (3.8 in)
1978	86.1 mm (3.4 in)
1979	85.1 mm (3.4 in)
1980	73.2 mm (2.9 in)
1981	92.8 mm (3.7 in)
1982	55.0 mm (2.2 in)
1983	64.0 mm (2.5 in)
1984	161.0 mm (6.3 in)
1985	26.4 mm (1.0 in)
1986	95.3 mm (3.8 in)
1987	42.2 mm (1.7 in)
1988	34.8 mm (1.4 in)
1989	108.4 mm (4.3 in)
1990	72.9 mm (2.9 in)
1991	106.7 mm (4.2 in)
1992	166.6 mm (6.6 in)
1993	106.9 mm (4.2 in)
1994	64.0 mm (2.5 in)
1995	113.3 mm (4.5 in)
1996	64.0 mm (2.5 in)
1997	82.3 mm (3.2 in)
1998	80.3 mm (3.2 in)
1999	62.4 mm (2.5 in)
2000	62.5 mm (2.5 in)
2001	76.7 mm (3.0 in)
2002	67.1 mm (2.6 in)
2003	59.2 mm (2.3 in)
2004	80.3 mm (3.2 in)
2005	72.8 mm (2.9 in)
2006	77.0 mm (3.0 in)
2007	70.8 mm (2.8 in)
2008	61.7 mm (2.4 in)
2009	87.4 mm (3.4 in)
2010	76.8 mm (3.0 in)
2011	90.2 mm (3.6 in)
2012	59.4 mm (2.3 in)
2013	65.5 mm (2.6 in)
2014	79.7 mm (3.1 in)
2015	123.2 mm (4.9 in)
2016	131.5 mm (5.2 in)
2017	84.6 mm (3.3 in)
2018	53.6 mm (2.1 in)
2019	103.2 mm (4.1 in)
2020	44.4 mm (1.7 in)
2021	82.5 mm (3.2 in)
2022	110.4 mm (4.3 in)
2023	98.1 mm (3.9 in)
2024	88.1 mm (3.5 in)
2025	92.3 mm (3.6 in)
2026	69.1 mm (2.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Madison Wwtp, 1940 to 2026. The record is 72 days in 2008, marked on the chart; the median year is 31 days.

Longest dry spell (CDD) at Madison Wwtp by year
Year	Longest dry spell (CDD)
1940	23 days
1941	40 days
1942	71 days
1943	53 days
1944	32 days
1945	30 days
1946	20 days
1947	27 days
1948	26 days
1949	48 days
1950	34 days
1951	20 days
1952	56 days
1953	25 days
1954	30 days
1955	27 days
1956	29 days
1957	17 days
1958	24 days
1959	29 days
1960	34 days
1961	33 days
1962	38 days
1963	27 days
1964	38 days
1965	23 days
1966	37 days
1967	30 days
1968	31 days
1969	23 days
1970	21 days
1971	37 days
1972	28 days
1973	39 days
1974	31 days
1975	41 days
1976	31 days
1977	34 days
1978	51 days
1979	35 days
1980	48 days
1981	31 days
1982	34 days
1983	25 days
1984	32 days
1985	24 days
1986	30 days
1987	28 days
1988	28 days
1989	38 days
1990	45 days
1991	37 days
1992	20 days
1993	31 days
1994	22 days
1995	18 days
1996	19 days
1997	38 days
1998	24 days
1999	39 days
2000	31 days
2001	33 days
2002	36 days
2003	50 days
2004	60 days
2005	30 days
2006	42 days
2007	31 days
2008	72 days
2009	28 days
2010	41 days
2011	39 days
2012	31 days
2013	34 days
2014	26 days
2015	28 days
2016	25 days
2017	31 days
2018	24 days
2019	24 days
2020	38 days
2021	24 days
2022	34 days
2023	28 days
2024	44 days
2025	38 days
2026	21 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

72 years with a frost

Across 72 years with a frost, the median last spring frost at Madison Wwtp falls on 6 May and the median first autumn frost on 29 September, which leaves a median of 149 days between them.

In 1991 to 2025 the median growing season was 154 days. That is 7 days more than in 1941 to 1972.

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

Frost dates and growing season at Madison Wwtp
Measure	Median, all years	Earliest period (1941 to 1972)	Recent period (1991 to 2025)	Recent against earliest	Fitted trend
Last spring frost	6 May	8 May	2 May	6 days earlier	-0.8 days per decade
First autumn frost	29 September	29 September	3 October	4 days later	+0.4 days per decade
Growing days	149 days	147 days	154 days	7 days more	+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

76 years, 1941 to 2025

A day with at least 53.1 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 119.5 mm (4.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Madison 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	53.1 mm (2.1 in)
5 years	70.0 mm (2.8 in)
10 years	81.6 mm (3.2 in)
25 years	96.5 mm (3.8 in)
50 years	107.9 mm (4.2 in)
100 years	119.5 mm (4.7 in)	Longer than the 76 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, 76 years of values from 1941 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: 117.6 mm (4.6 in) in 2016; 113.5 mm (4.5 in) in 1992; 102.4 mm (4.0 in) in 2015.

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, Madison Wwtp had a mean temperature of 7.1 C (44.7 F) and 667.4 mm (26.3 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Lamberton SW Rsch & Outreach C (United States, 108 km away), Windom (United States, 150 km away) and Luverne (United States, 149 km away).

Climate twins of Madison 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
Lamberton SW Rsch & Outreach C	United States	108 km (67 mi)	6.9 C (44.4 F)	641.0 mm (25.2 in)	0.99
Windom	United States	150 km (93 mi)	7.3 C (45.1 F)	710.6 mm (28.0 in)	1.00
Luverne	United States	149 km (93 mi)	7.3 C (45.1 F)	673.7 mm (26.5 in)	1.00

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

Date	Kind	Detail
1970-01-18	Record low maximum temperature	Record low maximum temperature -24.4 C (-11.9 F)
1970-01-19	Record low minimum temperature	Record low minimum temperature -36.7 C (-34.1 F)
1970-01-21	Record low minimum temperature	Record low minimum temperature -37.2 C (-35.0 F)
1971-06-29	Record daily precipitation	Record daily precipitation 90.2 mm (3.6 in)
1983-12-23	Record low maximum temperature	Record low maximum temperature -25.0 C (-13.0 F)
1988-07-07	Record high minimum temperature	Record high minimum temperature 27.8 C (82.0 F)
1988-07-31	Record high maximum temperature	Record high maximum temperature 43.3 C (109.9 F)
1988-08-16	Record high minimum temperature	Record high minimum temperature 28.9 C (84.0 F)
1989-02-03	Record low maximum temperature	Record low maximum temperature -26.1 C (-15.0 F)
1989-07-29	Record daily precipitation	Record daily precipitation 94.2 mm (3.7 in)
1992-06-17	Record daily precipitation	Record daily precipitation 113.5 mm (4.5 in)
1994-02-09	Record low minimum temperature	Record low minimum temperature -37.8 C (-36.0 F)
2001-02-25	Record daily snowfall	Record daily snowfall 38.9 cm (15.3 in)
2001-11-27	Record daily snowfall	Record daily snowfall 40.6 cm (16.0 in)
2004-01-29	Record low maximum temperature	Record low maximum temperature -26.7 C (-16.1 F)
2004-01-30	Record low maximum temperature	Record low maximum temperature -27.2 C (-17.0 F)
2011-02-21	Record daily snowfall	Record daily snowfall 48.8 cm (19.2 in)
2016-08-11	Record daily precipitation	Record daily precipitation 117.6 mm (4.6 in)