Record envelope, standing records and threshold days for St Germain (USC00477480), Wisconsin, United States, with 55 years of record.
Key Facts for St Germain
St Germain (USC00477480) is a weather station in Wisconsin, United States at 45.92 latitude and -89.49 longitude, 501 m (1,643 ft) above sea level.
The station reports from 1971 to 2025, 55 years of record.
1,464 records set at St Germain still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
St Germain tied a daily record precipitation of 20.6 mm (0.8 in) on 30 March 2025.
About the Station
Location: Wisconsin, United States, 45.92 latitude, -89.49 longitude.
Elevation: 501 m (1,643 ft).
Period of record: 1971 to 2025, 55 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at St Germain. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at St Germain, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
8.9 C (48.0 F)
-40.0 C (-40.0 F)
n/a
n/a
Feb
12.8 C (55.0 F)
-41.7 C (-43.1 F)
n/a
n/a
Mar
22.2 C (72.0 F)
-31.7 C (-25.1 F)
n/a
n/a
Apr
31.7 C (89.1 F)
-22.2 C (-8.0 F)
n/a
n/a
May
31.7 C (89.1 F)
-7.2 C (19.0 F)
n/a
n/a
Jun
33.9 C (93.0 F)
0.0 C (32.0 F)
n/a
n/a
Jul
36.1 C (97.0 F)
1.7 C (35.1 F)
n/a
n/a
Aug
35.0 C (95.0 F)
1.7 C (35.1 F)
n/a
n/a
Sep
33.3 C (91.9 F)
-4.4 C (24.1 F)
n/a
n/a
Oct
28.3 C (82.9 F)
-13.9 C (7.0 F)
n/a
n/a
Nov
21.1 C (70.0 F)
-27.8 C (-18.0 F)
n/a
n/a
Dec
14.4 C (57.9 F)
-36.1 C (-33.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at St Germain still stand. 1988 holds the most, with 69.
Standing records at St Germain by the year they were set
Year set
Standing records
1971
1
1972
40
1973
51
1974
54
1975
30
1976
63
1977
45
1978
34
1979
32
1980
23
1981
30
1982
40
1983
55
1984
29
1985
30
1986
43
1987
59
1988
69
1989
55
1990
57
1991
4
1992
28
1993
41
1994
47
1995
42
1996
45
1997
26
1998
33
1999
18
2000
37
2001
31
2002
29
2003
34
2004
32
2005
26
2006
37
2007
36
2008
23
2009
27
2010
28
All-Time Record Progression
5 new records
5 all-time records were set at St Germain between 5 October 2005 and 1 April 2023. Each dot is a new record.
When St Germain set new all-time records
Date
Kind
Detail
2005-10-05
Record daily precipitation
Record daily precipitation 142.0 mm (5.6 in)
2014-04-17
Record daily snowfall
Record daily snowfall 36.6 cm (14.4 in)
2019-02-24
Record daily snowfall
Record daily snowfall 37.8 cm (14.9 in)
2019-02-24
Record snow depth
Record snow depth 109.2 cm (43.0 in)
2023-04-01
Record daily snowfall
Record daily snowfall 38.4 cm (15.1 in)
Wettest Day of Each Month
Oct: 142.0 mm (5.6 in)
The wettest day on record for each calendar month at St Germain. The most was 142.0 mm (5.6 in) on 5 October 2005.
Record daily precipitation for each month at St Germain
Month
Record daily precipitation (mm)
Date
Jan
24.6 mm (1.0 in)
18 January 1996
Feb
27.2 mm (1.1 in)
24 February 2019
Mar
45.7 mm (1.8 in)
7 March 1973
Apr
51.3 mm (2.0 in)
1 April 2023
May
74.2 mm (2.9 in)
18 May 2017
Jun
101.1 mm (4.0 in)
14 June 1981
Jul
67.3 mm (2.6 in)
8 July 2000
Aug
88.1 mm (3.5 in)
10 August 1983
Sep
89.2 mm (3.5 in)
20 September 1983
Oct
142.0 mm (5.6 in)
5 October 2005
Nov
62.2 mm (2.4 in)
16 November 1996
Dec
30.5 mm (1.2 in)
15 December 2015
Period of Record Coverage
1971 to 2011
Complete yearUnder 90 percent of days
41 years of record at St Germain, 1971 to 2011. 5 years have data for under 90 percent of days and are left out of rankings: 1971, 1991, 1992, 2010, 2011.
Cooler than the station meanWarmer than the station mean
One stripe for each of 35 complete years at St Germain, 1972 to 2009. Blue stripes are years cooler than the station's own mean of 4.2 C (39.6 F); red stripes are warmer. The coolest year was 1996, at 2.4 C (36.3 F), and the warmest was 1987, at 6.7 C (44.0 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at St Germain as warming stripes, 1972 to 2009
Year
Annual mean temperature
Difference from the station mean
1972
3.0 C
-1.24 C
1973
5.0 C
+0.73 C
1974
3.5 C
-0.73 C
1975
4.4 C
+0.19 C
1976
3.5 C
-0.79 C
1977
4.7 C
+0.41 C
1978
3.5 C
-0.77 C
1979
2.9 C
-1.32 C
1980
3.7 C
-0.50 C
1981
4.7 C
+0.47 C
1982
3.6 C
-0.63 C
1983
4.9 C
+0.63 C
1984
4.7 C
+0.45 C
1985
3.6 C
-0.62 C
1986
4.8 C
+0.53 C
1987
6.7 C
+2.45 C
1988
5.0 C
+0.71 C
1989
3.9 C
-0.36 C
1990
5.8 C
+1.60 C
1993
3.1 C
-1.14 C
1994
3.8 C
-0.44 C
1995
3.7 C
-0.59 C
1996
2.4 C
-1.86 C
1997
3.6 C
-0.67 C
1998
6.5 C
+2.21 C
1999
4.9 C
+0.65 C
2000
4.0 C
-0.26 C
2001
5.4 C
+1.11 C
2002
4.3 C
+0.06 C
2003
3.6 C
-0.62 C
2005
5.0 C
+0.80 C
2006
5.3 C
+1.01 C
2007
4.7 C
+0.43 C
2008
3.1 C
-1.16 C
2009
3.4 C
-0.80 C
The fitted trend in annual mean temperature here over 1972 to 2009 is 0.1 C (-0.2 to 0.4) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.2 F (-0.4 to 0.7) per decade. The slope is a straight line fitted to 35 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at St Germain
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (-0.2 to 0.4) per decade
0.2 F (-0.4 to 0.7) per decade
1972 to 2009
35
Not clearly different from zero
Mean daily maximum
0.3 C (-0.1 to 0.6) per decade
0.5 F (-0.2 to 1.1) per decade
1972 to 2009
35
Not clearly different from zero
Mean daily minimum
-0.1 C (-0.4 to 0.3) per decade
-0.1 F (-0.7 to 0.5) per decade
1972 to 2009
35
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
1971 to 2025
Yearly extremes at St Germain: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
36.1 C (97.0 F)
1988
31.1 C (88.0 F)
41
Coldest night (TNn)
-41.7 C (-43.1 F)
1996
-32.8 C (-27.0 F)
41
Wettest day (Rx1day)
142.0 mm (5.6 in)
2005
47.2 mm (1.9 in)
55
Wettest five days (Rx5day)
162.6 mm (6.4 in)
2005
82.7 mm (3.3 in)
55
Longest dry spell (CDD)
35 days
1994
17 days
55
Hottest day (TXx)
The hottest day of the year at St Germain, 1971 to 2025. The record is 36.1 C (97.0 F) in 1988, marked on the chart; the median year is 31.1 C (88.0 F).
Hottest day (TXx) at St Germain by year
Year
Hottest day (TXx)
1971
1.7 C (35.1 F)
1972
30.6 C (87.1 F)
1973
32.2 C (90.0 F)
1974
32.2 C (90.0 F)
1975
32.8 C (91.0 F)
1976
32.8 C (91.0 F)
1977
33.3 C (91.9 F)
1978
29.4 C (84.9 F)
1979
29.4 C (84.9 F)
1980
31.7 C (89.1 F)
1981
29.4 C (84.9 F)
1982
29.4 C (84.9 F)
1983
31.1 C (88.0 F)
1984
29.4 C (84.9 F)
1985
28.3 C (82.9 F)
1986
31.1 C (88.0 F)
1987
32.2 C (90.0 F)
1988
36.1 C (97.0 F)
1989
33.9 C (93.0 F)
1990
31.7 C (89.1 F)
1991
2.8 C (37.0 F)
1992
28.3 C (82.9 F)
1993
30.6 C (87.1 F)
1994
30.6 C (87.1 F)
1995
35.0 C (95.0 F)
1996
31.1 C (88.0 F)
1997
29.4 C (84.9 F)
1998
33.3 C (91.9 F)
1999
33.3 C (91.9 F)
2000
30.6 C (87.1 F)
2001
32.2 C (90.0 F)
2002
32.8 C (91.0 F)
2003
31.7 C (89.1 F)
2004
30.0 C (86.0 F)
2005
32.8 C (91.0 F)
2006
33.9 C (93.0 F)
2007
31.1 C (88.0 F)
2008
28.3 C (82.9 F)
2009
33.9 C (93.0 F)
2010
31.7 C (89.1 F)
2011
-5.6 C (21.9 F)
2012
n/a
2013
n/a
2014
n/a
2015
n/a
2016
n/a
2017
n/a
2018
n/a
2019
n/a
2020
n/a
2021
n/a
2022
n/a
2023
n/a
2024
n/a
2025
n/a
Coldest night (TNn)
The coldest night of the year at St Germain, 1971 to 2025. The record is -41.7 C (-43.1 F) in 1996, marked on the chart; the median year is -32.8 C (-27.0 F).
Coldest night (TNn) at St Germain by year
Year
Coldest night (TNn)
1971
-24.4 C (-11.9 F)
1972
-38.9 C (-38.0 F)
1973
-33.9 C (-29.0 F)
1974
-34.4 C (-29.9 F)
1975
-32.2 C (-26.0 F)
1976
-33.3 C (-27.9 F)
1977
-38.9 C (-38.0 F)
1978
-31.1 C (-24.0 F)
1979
-37.8 C (-36.0 F)
1980
-31.7 C (-25.1 F)
1981
-32.8 C (-27.0 F)
1982
-40.0 C (-40.0 F)
1983
-36.1 C (-33.0 F)
1984
-34.4 C (-29.9 F)
1985
-35.6 C (-32.1 F)
1986
-28.3 C (-18.9 F)
1987
-32.2 C (-26.0 F)
1988
-33.9 C (-29.0 F)
1989
-33.3 C (-27.9 F)
1990
-33.3 C (-27.9 F)
1991
-33.3 C (-27.9 F)
1992
-27.8 C (-18.0 F)
1993
-31.1 C (-24.0 F)
1994
-38.9 C (-38.0 F)
1995
-29.4 C (-20.9 F)
1996
-41.7 C (-43.1 F)
1997
-34.4 C (-29.9 F)
1998
-29.4 C (-20.9 F)
1999
-31.7 C (-25.1 F)
2000
-30.6 C (-23.1 F)
2001
-30.6 C (-23.1 F)
2002
-28.9 C (-20.0 F)
2003
-32.8 C (-27.0 F)
2004
-32.8 C (-27.0 F)
2005
-33.3 C (-27.9 F)
2006
-31.7 C (-25.1 F)
2007
-32.2 C (-26.0 F)
2008
-30.0 C (-22.0 F)
2009
-32.2 C (-26.0 F)
2010
-27.8 C (-18.0 F)
2011
-26.7 C (-16.1 F)
2012
n/a
2013
n/a
2014
n/a
2015
n/a
2016
n/a
2017
n/a
2018
n/a
2019
n/a
2020
n/a
2021
n/a
2022
n/a
2023
n/a
2024
n/a
2025
n/a
Wettest day (Rx1day)
The wettest day of the year at St Germain, 1971 to 2025. The record is 142.0 mm (5.6 in) in 2005, marked on the chart; the median year is 47.2 mm (1.9 in).
Wettest day (Rx1day) at St Germain by year
Year
Wettest day (Rx1day)
1971
11.4 mm (0.4 in)
1972
73.7 mm (2.9 in)
1973
45.7 mm (1.8 in)
1974
48.0 mm (1.9 in)
1975
50.8 mm (2.0 in)
1976
40.6 mm (1.6 in)
1977
74.7 mm (2.9 in)
1978
73.2 mm (2.9 in)
1979
44.7 mm (1.8 in)
1980
52.6 mm (2.1 in)
1981
101.1 mm (4.0 in)
1982
42.9 mm (1.7 in)
1983
89.2 mm (3.5 in)
1984
50.3 mm (2.0 in)
1985
49.3 mm (1.9 in)
1986
37.6 mm (1.5 in)
1987
32.8 mm (1.3 in)
1988
41.1 mm (1.6 in)
1989
38.4 mm (1.5 in)
1990
50.8 mm (2.0 in)
1991
41.7 mm (1.6 in)
1992
32.0 mm (1.3 in)
1993
41.4 mm (1.6 in)
1994
62.5 mm (2.5 in)
1995
48.5 mm (1.9 in)
1996
62.2 mm (2.4 in)
1997
33.8 mm (1.3 in)
1998
40.6 mm (1.6 in)
1999
60.2 mm (2.4 in)
2000
67.3 mm (2.6 in)
2001
65.5 mm (2.6 in)
2002
49.0 mm (1.9 in)
2003
38.6 mm (1.5 in)
2004
36.1 mm (1.4 in)
2005
142.0 mm (5.6 in)
2006
52.3 mm (2.1 in)
2007
47.0 mm (1.9 in)
2008
45.0 mm (1.8 in)
2009
37.3 mm (1.5 in)
2010
68.8 mm (2.7 in)
2011
11.2 mm (0.4 in)
2012
37.6 mm (1.5 in)
2013
34.0 mm (1.3 in)
2014
47.2 mm (1.9 in)
2015
42.4 mm (1.7 in)
2016
49.8 mm (2.0 in)
2017
74.2 mm (2.9 in)
2018
49.5 mm (1.9 in)
2019
39.9 mm (1.6 in)
2020
76.7 mm (3.0 in)
2021
74.2 mm (2.9 in)
2022
45.7 mm (1.8 in)
2023
51.3 mm (2.0 in)
2024
39.4 mm (1.6 in)
2025
20.8 mm (0.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at St Germain, 1971 to 2025. The record is 162.6 mm (6.4 in) in 2005, marked on the chart; the median year is 82.7 mm (3.3 in).
Wettest five days (Rx5day) at St Germain by year
Year
Wettest five days (Rx5day)
1971
15.5 mm (0.6 in)
1972
121.2 mm (4.8 in)
1973
84.1 mm (3.3 in)
1974
78.0 mm (3.1 in)
1975
71.7 mm (2.8 in)
1976
43.7 mm (1.7 in)
1977
150.9 mm (5.9 in)
1978
103.7 mm (4.1 in)
1979
89.6 mm (3.5 in)
1980
116.5 mm (4.6 in)
1981
131.0 mm (5.2 in)
1982
82.7 mm (3.3 in)
1983
117.1 mm (4.6 in)
1984
61.7 mm (2.4 in)
1985
72.9 mm (2.9 in)
1986
49.8 mm (2.0 in)
1987
55.9 mm (2.2 in)
1988
63.8 mm (2.5 in)
1989
98.4 mm (3.9 in)
1990
83.1 mm (3.3 in)
1991
114.7 mm (4.5 in)
1992
63.8 mm (2.5 in)
1993
61.8 mm (2.4 in)
1994
122.5 mm (4.8 in)
1995
92.4 mm (3.6 in)
1996
85.3 mm (3.4 in)
1997
50.8 mm (2.0 in)
1998
50.6 mm (2.0 in)
1999
132.9 mm (5.2 in)
2000
116.0 mm (4.6 in)
2001
100.3 mm (3.9 in)
2002
81.3 mm (3.2 in)
2003
89.4 mm (3.5 in)
2004
53.9 mm (2.1 in)
2005
162.6 mm (6.4 in)
2006
123.8 mm (4.9 in)
2007
84.6 mm (3.3 in)
2008
62.5 mm (2.5 in)
2009
58.9 mm (2.3 in)
2010
103.3 mm (4.1 in)
2011
16.5 mm (0.6 in)
2012
61.8 mm (2.4 in)
2013
93.1 mm (3.7 in)
2014
103.9 mm (4.1 in)
2015
52.2 mm (2.1 in)
2016
88.9 mm (3.5 in)
2017
111.6 mm (4.4 in)
2018
80.8 mm (3.2 in)
2019
62.8 mm (2.5 in)
2020
83.5 mm (3.3 in)
2021
75.0 mm (3.0 in)
2022
66.3 mm (2.6 in)
2023
71.9 mm (2.8 in)
2024
64.5 mm (2.5 in)
2025
46.5 mm (1.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at St Germain, 1971 to 2025. The record is 35 days in 1994, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at St Germain by year
Year
Longest dry spell (CDD)
1971
7 days
1972
16 days
1973
16 days
1974
14 days
1975
23 days
1976
20 days
1977
13 days
1978
20 days
1979
18 days
1980
27 days
1981
18 days
1982
22 days
1983
24 days
1984
25 days
1985
14 days
1986
20 days
1987
23 days
1988
14 days
1989
23 days
1990
18 days
1991
13 days
1992
22 days
1993
24 days
1994
35 days
1995
17 days
1996
13 days
1997
22 days
1998
21 days
1999
23 days
2000
15 days
2001
18 days
2002
20 days
2003
16 days
2004
11 days
2005
16 days
2006
17 days
2007
28 days
2008
11 days
2009
20 days
2010
22 days
2011
11 days
2012
15 days
2013
13 days
2014
13 days
2015
17 days
2016
10 days
2017
15 days
2018
17 days
2019
19 days
2020
23 days
2021
15 days
2022
14 days
2023
13 days
2024
14 days
2025
9 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
35 years with a frost
Across 35 years with a frost, the median last spring frost at St Germain falls on 20 May and the median first autumn frost on 26 September, which leaves a median of 129 days between them.
Fitted over all years, the growing season changes by +0.9 days per decade at this station.
Frost dates and growing season at St Germain
Measure
Median, all years
Earliest period
Recent period (1977 to 2009)
Recent against earliest
Fitted trend
Last spring frost
20 May
n/a
20 May
n/a
-0.3 days per decade
First autumn frost
26 September
n/a
30 September
n/a
+0.6 days per decade
Growing days
129 days
n/a
130 days
n/a
+0.9 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
40 years, 1972 to 2023
A day with at least 48.2 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 141.6 mm (5.6 in) of rain is expected about once in 100 years.
Rainfall return levels at St Germain: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
48.2 mm (1.9 in)
5 years
63.8 mm (2.5 in)
10 years
77.1 mm (3.0 in)
25 years
98.4 mm (3.9 in)
50 years
118.0 mm (4.6 in)
Longer than the 40 years of record
100 years
141.6 mm (5.6 in)
Longer than the 40 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, 40 years of values from 1972 to 2023.
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: 142.0 mm (5.6 in) in 2005; 101.1 mm (4.0 in) in 1981; 89.2 mm (3.5 in) in 1983.
Download the Data
Data for St Germain standing records by year: CSV or JSON. Field meanings are on the data page.
Data for St Germain 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.