Record envelope, standing records and threshold days for Stillwater 1 SE (USC00218037), Minnesota, United States, with 103 years of record.
Key Facts for Stillwater 1 SE
Stillwater 1 SE (USC00218037) is a weather station in Minnesota, United States at 45.04 latitude and -92.80 longitude, 216 m (710 ft) above sea level.
The station reports from 1904 to 2006, 103 years of record.
1,464 records set at Stillwater 1 SE still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Stillwater 1 SE set a daily record precipitation of 10.4 mm (0.4 in) on 29 January 2006.
About the Station
Location: Minnesota, United States, 45.04 latitude, -92.80 longitude.
Elevation: 216 m (710 ft).
Period of record: 1904 to 2006, 103 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 Stillwater 1 SE. 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 Stillwater 1 SE, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
13.9 C (57.0 F)
-40.0 C (-40.0 F)
n/a
n/a
Feb
16.7 C (62.1 F)
-37.8 C (-36.0 F)
n/a
n/a
Mar
28.3 C (82.9 F)
-26.7 C (-16.1 F)
n/a
n/a
Apr
34.4 C (93.9 F)
-15.6 C (3.9 F)
n/a
n/a
May
35.6 C (96.1 F)
-6.7 C (19.9 F)
n/a
n/a
Jun
39.4 C (102.9 F)
1.1 C (34.0 F)
n/a
n/a
Jul
41.1 C (106.0 F)
7.2 C (45.0 F)
n/a
n/a
Aug
40.0 C (104.0 F)
2.8 C (37.0 F)
n/a
n/a
Sep
36.7 C (98.1 F)
-3.3 C (26.1 F)
n/a
n/a
Oct
32.2 C (90.0 F)
-9.4 C (15.1 F)
n/a
n/a
Nov
25.6 C (78.1 F)
-26.7 C (-16.1 F)
n/a
n/a
Dec
19.4 C (66.9 F)
-39.4 C (-38.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Stillwater 1 SE still stand. 1965 holds the most, with 46.
Standing records at Stillwater 1 SE by the year they were set
Year set
Standing records
1958
2
1959
44
1960
30
1961
23
1962
34
1963
36
1964
41
1965
46
1966
38
1967
33
1968
38
1969
30
1970
24
1971
26
1972
37
1973
24
1974
37
1975
25
1976
27
1977
34
1978
15
1979
29
1980
12
1981
23
1982
28
1983
32
1984
32
1985
35
1986
18
1987
38
1988
35
1989
34
1990
32
1991
45
1992
32
1993
20
1994
28
1995
38
1996
31
1997
20
1998
41
1999
16
2000
39
2001
43
2002
30
2003
37
2004
24
2005
23
2006
5
All-Time Record Progression
5 new records
5 all-time records were set at Stillwater 1 SE between 31 August 1977 and 24 July 1987. Each dot is a new record.
When Stillwater 1 SE set new all-time records
Date
Kind
Detail
1977-08-31
Record daily precipitation
Record daily precipitation 102.4 mm (4.0 in)
1978-07-01
Record daily precipitation
Record daily precipitation 125.0 mm (4.9 in)
1982-01-23
Record daily snowfall
Record daily snowfall 43.2 cm (17.0 in)
1982-01-30
Record snow depth
Record snow depth 99.1 cm (39.0 in)
1987-07-24
Record daily precipitation
Record daily precipitation 130.6 mm (5.1 in)
Wettest Day of Each Month
Jul: 130.6 mm (5.1 in)
The wettest day on record for each calendar month at Stillwater 1 SE. The most was 130.6 mm (5.1 in) on 24 July 1987.
Record daily precipitation for each month at Stillwater 1 SE
Month
Record daily precipitation (mm)
Date
Jan
45.0 mm (1.8 in)
18 January 1996
Feb
40.6 mm (1.6 in)
28 February 1948
Mar
43.2 mm (1.7 in)
6 March 1908
Apr
59.7 mm (2.4 in)
28 April 1986
May
70.4 mm (2.8 in)
28 May 1978
Jun
114.6 mm (4.5 in)
17 June 1979
Jul
130.6 mm (5.1 in)
24 July 1987
Aug
114.3 mm (4.5 in)
9 August 1993
Sep
90.4 mm (3.6 in)
16 September 1992
Oct
128.0 mm (5.0 in)
5 October 2005
Nov
68.1 mm (2.7 in)
15 November 1944
Dec
46.0 mm (1.8 in)
25 December 1982
Period of Record Coverage
1958 to 2006
Complete yearUnder 90 percent of days
49 years of record at Stillwater 1 SE, 1958 to 2006. 9 years have data for under 90 percent of days and are left out of rankings: 1958, 1965, 1978, 1979, 1980, 1981, 1982, 1988 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 36 complete years at Stillwater 1 SE, 1959 to 2005. 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 1972, at 5.9 C (42.6 F), and the warmest was 1998, at 10.4 C (50.7 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Stillwater 1 SE as warming stripes, 1959 to 2005
Year
Annual mean temperature
Difference from the station mean
1959
6.5 C
-1.43 C
1962
7.1 C
-0.83 C
1963
8.0 C
+0.09 C
1964
8.0 C
+0.13 C
1966
6.6 C
-1.32 C
1967
6.6 C
-1.29 C
1969
7.0 C
-0.88 C
1970
6.8 C
-1.11 C
1971
7.1 C
-0.80 C
1972
5.9 C
-2.04 C
1973
8.2 C
+0.25 C
1974
7.2 C
-0.76 C
1975
7.3 C
-0.66 C
1977
7.7 C
-0.24 C
1983
7.3 C
-0.57 C
1984
7.5 C
-0.43 C
1985
6.1 C
-1.79 C
1986
7.7 C
-0.18 C
1987
10.1 C
+2.14 C
1989
6.7 C
-1.25 C
1990
8.9 C
+0.95 C
1991
8.3 C
+0.39 C
1992
8.2 C
+0.28 C
1993
7.0 C
-0.91 C
1994
8.2 C
+0.25 C
1995
8.0 C
+0.12 C
1996
6.5 C
-1.46 C
1997
8.0 C
+0.05 C
1998
10.4 C
+2.46 C
1999
9.8 C
+1.93 C
2000
9.4 C
+1.50 C
2001
9.7 C
+1.81 C
2002
9.6 C
+1.65 C
2003
9.3 C
+1.37 C
2004
9.0 C
+1.13 C
2005
9.2 C
+1.28 C
The annual mean temperature here has risen by 0.6 C (0.3 to 0.8) per decade over 1959 to 2005. In Fahrenheit: 1.0 F (0.6 to 1.4) per decade. The slope is a straight line fitted to 36 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Stillwater 1 SE
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.6 C (0.3 to 0.8) per decade
1.0 F (0.6 to 1.4) per decade
1959 to 2005
36
Rise
Mean daily maximum
0.5 C (0.3 to 0.7) per decade
0.9 F (0.5 to 1.3) per decade
1959 to 2005
36
Rise
Mean daily minimum
0.6 C (0.4 to 0.9) per decade
1.1 F (0.7 to 1.5) per decade
1959 to 2005
36
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
1904 to 2006
Yearly extremes at Stillwater 1 SE: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.1 C (106.0 F)
1990
36.1 C (97.0 F)
49
Coldest night (TNn)
-40.0 C (-40.0 F)
1977
-31.1 C (-24.0 F)
49
Wettest day (Rx1day)
130.6 mm (5.1 in)
1987
53.8 mm (2.1 in)
78
Wettest five days (Rx5day)
170.9 mm (6.7 in)
1987
90.8 mm (3.6 in)
78
Longest dry spell (CDD)
59 days
1952
23 days
78
Hottest day (TXx)
The hottest day of the year at Stillwater 1 SE, 1904 to 2006. The record is 41.1 C (106.0 F) in 1990, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at Stillwater 1 SE by year
Year
Hottest day (TXx)
1904
n/a
1905
n/a
1906
n/a
1907
n/a
1908
n/a
1909
n/a
1910
n/a
1911
n/a
1912
n/a
1913
n/a
1914
n/a
1915
n/a
1916
n/a
1917
n/a
1918
n/a
1919
n/a
1944
n/a
1945
n/a
1946
n/a
1947
n/a
1948
n/a
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
n/a
1955
n/a
1956
n/a
1957
n/a
1958
17.2 C (63.0 F)
1959
33.9 C (93.0 F)
1960
37.8 C (100.0 F)
1961
37.2 C (99.0 F)
1962
34.4 C (93.9 F)
1963
39.4 C (102.9 F)
1964
38.9 C (102.0 F)
1965
36.7 C (98.1 F)
1966
35.0 C (95.0 F)
1967
33.3 C (91.9 F)
1968
35.6 C (96.1 F)
1969
35.0 C (95.0 F)
1970
36.1 C (97.0 F)
1971
36.1 C (97.0 F)
1972
37.2 C (99.0 F)
1973
35.6 C (96.1 F)
1974
38.9 C (102.0 F)
1975
36.7 C (98.1 F)
1976
36.7 C (98.1 F)
1977
37.2 C (99.0 F)
1978
23.3 C (73.9 F)
1979
32.8 C (91.0 F)
1980
34.4 C (93.9 F)
1981
32.8 C (91.0 F)
1982
37.2 C (99.0 F)
1983
36.1 C (97.0 F)
1984
34.4 C (93.9 F)
1985
38.3 C (100.9 F)
1986
35.0 C (95.0 F)
1987
37.2 C (99.0 F)
1988
40.6 C (105.1 F)
1989
35.6 C (96.1 F)
1990
41.1 C (106.0 F)
1991
38.3 C (100.9 F)
1992
34.4 C (93.9 F)
1993
33.3 C (91.9 F)
1994
35.6 C (96.1 F)
1995
38.9 C (102.0 F)
1996
35.0 C (95.0 F)
1997
35.0 C (95.0 F)
1998
35.0 C (95.0 F)
1999
37.8 C (100.0 F)
2000
34.4 C (93.9 F)
2001
37.2 C (99.0 F)
2002
36.1 C (97.0 F)
2003
37.2 C (99.0 F)
2004
36.1 C (97.0 F)
2005
35.6 C (96.1 F)
2006
9.4 C (48.9 F)
Coldest night (TNn)
The coldest night of the year at Stillwater 1 SE, 1904 to 2006. The record is -40.0 C (-40.0 F) in 1977, marked on the chart; the median year is -31.1 C (-24.0 F).
Coldest night (TNn) at Stillwater 1 SE by year
Year
Coldest night (TNn)
1904
n/a
1905
n/a
1906
n/a
1907
n/a
1908
n/a
1909
n/a
1910
n/a
1911
n/a
1912
n/a
1913
n/a
1914
n/a
1915
n/a
1916
n/a
1917
n/a
1918
n/a
1919
n/a
1944
n/a
1945
n/a
1946
n/a
1947
n/a
1948
n/a
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
n/a
1955
n/a
1956
n/a
1957
n/a
1958
-27.2 C (-17.0 F)
1959
-31.1 C (-24.0 F)
1960
-32.2 C (-26.0 F)
1961
-27.2 C (-17.0 F)
1962
-33.3 C (-27.9 F)
1963
-33.3 C (-27.9 F)
1964
-27.2 C (-17.0 F)
1965
-36.7 C (-34.1 F)
1966
-34.4 C (-29.9 F)
1967
-35.6 C (-32.1 F)
1968
-33.3 C (-27.9 F)
1969
-28.9 C (-20.0 F)
1970
-37.2 C (-35.0 F)
1971
-31.7 C (-25.1 F)
1972
-33.3 C (-27.9 F)
1973
-32.2 C (-26.0 F)
1974
-33.3 C (-27.9 F)
1975
-30.6 C (-23.1 F)
1976
-32.8 C (-27.0 F)
1977
-40.0 C (-40.0 F)
1978
-27.8 C (-18.0 F)
1979
-35.0 C (-31.0 F)
1980
-27.2 C (-17.0 F)
1981
-29.4 C (-20.9 F)
1982
-34.4 C (-29.9 F)
1983
-39.4 C (-38.9 F)
1984
-34.4 C (-29.9 F)
1985
-33.9 C (-29.0 F)
1986
-29.4 C (-20.9 F)
1987
-26.1 C (-15.0 F)
1988
-31.1 C (-24.0 F)
1989
-33.9 C (-29.0 F)
1990
-32.2 C (-26.0 F)
1991
-27.2 C (-17.0 F)
1992
-25.6 C (-14.1 F)
1993
-27.8 C (-18.0 F)
1994
-35.6 C (-32.1 F)
1995
-25.6 C (-14.1 F)
1996
-37.8 C (-36.0 F)
1997
-28.3 C (-18.9 F)
1998
-27.8 C (-18.0 F)
1999
-27.2 C (-17.0 F)
2000
-30.0 C (-22.0 F)
2001
-23.3 C (-9.9 F)
2002
-18.9 C (-2.0 F)
2003
-26.7 C (-16.1 F)
2004
-30.0 C (-22.0 F)
2005
-27.2 C (-17.0 F)
2006
-16.7 C (1.9 F)
Wettest day (Rx1day)
The wettest day of the year at Stillwater 1 SE, 1904 to 2006. The record is 130.6 mm (5.1 in) in 1987, marked on the chart; the median year is 53.8 mm (2.1 in).
Wettest day (Rx1day) at Stillwater 1 SE by year
Year
Wettest day (Rx1day)
1904
n/a
1905
69.6 mm (2.7 in)
1906
64.0 mm (2.5 in)
1907
62.0 mm (2.4 in)
1908
53.3 mm (2.1 in)
1909
51.3 mm (2.0 in)
1910
19.8 mm (0.8 in)
1911
81.0 mm (3.2 in)
1912
53.8 mm (2.1 in)
1913
52.1 mm (2.1 in)
1914
53.1 mm (2.1 in)
1915
40.6 mm (1.6 in)
1916
51.6 mm (2.0 in)
1917
45.7 mm (1.8 in)
1918
51.8 mm (2.0 in)
1919
27.2 mm (1.1 in)
1944
68.1 mm (2.7 in)
1945
50.8 mm (2.0 in)
1946
66.5 mm (2.6 in)
1947
31.2 mm (1.2 in)
1948
40.6 mm (1.6 in)
1949
56.9 mm (2.2 in)
1950
36.8 mm (1.4 in)
1951
68.3 mm (2.7 in)
1952
39.1 mm (1.5 in)
1953
44.2 mm (1.7 in)
1954
56.4 mm (2.2 in)
1955
93.0 mm (3.7 in)
1956
101.3 mm (4.0 in)
1957
65.3 mm (2.6 in)
1958
43.4 mm (1.7 in)
1959
52.8 mm (2.1 in)
1960
90.2 mm (3.6 in)
1961
63.8 mm (2.5 in)
1962
39.9 mm (1.6 in)
1963
48.0 mm (1.9 in)
1964
48.8 mm (1.9 in)
1965
35.3 mm (1.4 in)
1966
64.3 mm (2.5 in)
1967
35.6 mm (1.4 in)
1968
55.6 mm (2.2 in)
1969
39.1 mm (1.5 in)
1970
44.2 mm (1.7 in)
1971
43.4 mm (1.7 in)
1972
41.4 mm (1.6 in)
1973
74.2 mm (2.9 in)
1974
45.5 mm (1.8 in)
1975
74.2 mm (2.9 in)
1976
44.5 mm (1.8 in)
1977
102.4 mm (4.0 in)
1978
125.0 mm (4.9 in)
1979
114.6 mm (4.5 in)
1980
55.9 mm (2.2 in)
1981
50.8 mm (2.0 in)
1982
50.8 mm (2.0 in)
1983
51.3 mm (2.0 in)
1984
60.2 mm (2.4 in)
1985
39.4 mm (1.6 in)
1986
74.2 mm (2.9 in)
1987
130.6 mm (5.1 in)
1988
57.2 mm (2.3 in)
1989
59.7 mm (2.4 in)
1990
78.7 mm (3.1 in)
1991
58.7 mm (2.3 in)
1992
90.4 mm (3.6 in)
1993
114.3 mm (4.5 in)
1994
53.6 mm (2.1 in)
1995
71.1 mm (2.8 in)
1996
45.7 mm (1.8 in)
1997
86.9 mm (3.4 in)
1998
44.2 mm (1.7 in)
1999
59.2 mm (2.3 in)
2000
53.8 mm (2.1 in)
2001
58.2 mm (2.3 in)
2002
78.7 mm (3.1 in)
2003
103.9 mm (4.1 in)
2004
41.9 mm (1.6 in)
2005
128.0 mm (5.0 in)
2006
10.4 mm (0.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Stillwater 1 SE, 1904 to 2006. The record is 170.9 mm (6.7 in) in 1987, marked on the chart; the median year is 90.8 mm (3.6 in).
Wettest five days (Rx5day) at Stillwater 1 SE by year
Year
Wettest five days (Rx5day)
1904
n/a
1905
108.7 mm (4.3 in)
1906
106.1 mm (4.2 in)
1907
78.7 mm (3.1 in)
1908
97.1 mm (3.8 in)
1909
85.3 mm (3.4 in)
1910
37.0 mm (1.5 in)
1911
123.6 mm (4.9 in)
1912
90.4 mm (3.6 in)
1913
104.1 mm (4.1 in)
1914
89.7 mm (3.5 in)
1915
58.3 mm (2.3 in)
1916
74.5 mm (2.9 in)
1917
64.0 mm (2.5 in)
1918
106.7 mm (4.2 in)
1919
32.8 mm (1.3 in)
1944
81.0 mm (3.2 in)
1945
76.9 mm (3.0 in)
1946
99.4 mm (3.9 in)
1947
56.4 mm (2.2 in)
1948
71.4 mm (2.8 in)
1949
100.0 mm (3.9 in)
1950
54.1 mm (2.1 in)
1951
154.4 mm (6.1 in)
1952
72.3 mm (2.8 in)
1953
84.8 mm (3.3 in)
1954
94.2 mm (3.7 in)
1955
100.6 mm (4.0 in)
1956
136.3 mm (5.4 in)
1957
107.2 mm (4.2 in)
1958
56.1 mm (2.2 in)
1959
84.8 mm (3.3 in)
1960
115.6 mm (4.6 in)
1961
69.9 mm (2.8 in)
1962
77.0 mm (3.0 in)
1963
67.6 mm (2.7 in)
1964
69.6 mm (2.7 in)
1965
72.9 mm (2.9 in)
1966
70.4 mm (2.8 in)
1967
51.1 mm (2.0 in)
1968
70.7 mm (2.8 in)
1969
50.4 mm (2.0 in)
1970
94.0 mm (3.7 in)
1971
94.0 mm (3.7 in)
1972
70.1 mm (2.8 in)
1973
76.5 mm (3.0 in)
1974
56.4 mm (2.2 in)
1975
155.0 mm (6.1 in)
1976
47.5 mm (1.9 in)
1977
163.6 mm (6.4 in)
1978
128.8 mm (5.1 in)
1979
129.3 mm (5.1 in)
1980
129.1 mm (5.1 in)
1981
112.1 mm (4.4 in)
1982
87.9 mm (3.5 in)
1983
71.4 mm (2.8 in)
1984
107.0 mm (4.2 in)
1985
101.2 mm (4.0 in)
1986
109.0 mm (4.3 in)
1987
170.9 mm (6.7 in)
1988
104.2 mm (4.1 in)
1989
76.2 mm (3.0 in)
1990
87.6 mm (3.4 in)
1991
100.8 mm (4.0 in)
1992
95.4 mm (3.8 in)
1993
153.4 mm (6.0 in)
1994
108.4 mm (4.3 in)
1995
134.4 mm (5.3 in)
1996
90.2 mm (3.6 in)
1997
136.9 mm (5.4 in)
1998
91.1 mm (3.6 in)
1999
95.1 mm (3.7 in)
2000
63.8 mm (2.5 in)
2001
115.3 mm (4.5 in)
2002
146.0 mm (5.7 in)
2003
127.2 mm (5.0 in)
2004
61.5 mm (2.4 in)
2005
142.7 mm (5.6 in)
2006
12.8 mm (0.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Stillwater 1 SE, 1904 to 2006. The record is 59 days in 1952, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at Stillwater 1 SE by year
Year
Longest dry spell (CDD)
1904
n/a
1905
33 days
1906
33 days
1907
22 days
1908
25 days
1909
17 days
1910
28 days
1911
24 days
1912
49 days
1913
32 days
1914
23 days
1915
27 days
1916
31 days
1917
31 days
1918
19 days
1919
15 days
1944
29 days
1945
18 days
1946
17 days
1947
19 days
1948
21 days
1949
34 days
1950
22 days
1951
19 days
1952
59 days
1953
54 days
1954
24 days
1955
16 days
1956
32 days
1957
29 days
1958
37 days
1959
32 days
1960
22 days
1961
42 days
1962
18 days
1963
21 days
1964
39 days
1965
22 days
1966
24 days
1967
30 days
1968
35 days
1969
25 days
1970
25 days
1971
31 days
1972
21 days
1973
22 days
1974
23 days
1975
22 days
1976
37 days
1977
33 days
1978
36 days
1979
18 days
1980
27 days
1981
24 days
1982
22 days
1983
14 days
1984
23 days
1985
23 days
1986
21 days
1987
28 days
1988
31 days
1989
14 days
1990
23 days
1991
18 days
1992
18 days
1993
20 days
1994
23 days
1995
23 days
1996
20 days
1997
23 days
1998
27 days
1999
25 days
2000
23 days
2001
20 days
2002
56 days
2003
30 days
2004
23 days
2005
15 days
2006
11 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
36 years with a frost
Across 36 years with a frost, the median last spring frost at Stillwater 1 SE falls on 28 April and the median first autumn frost on 6 October, which leaves a median of 163 days between them.
Fitted over all years, the growing season changes by +2.5 days per decade at this station.
Frost dates and growing season at Stillwater 1 SE
Measure
Median, all years
Earliest period
Recent period (1969 to 2005)
Recent against earliest
Fitted trend
Last spring frost
28 April
n/a
28 April
n/a
-2.9 days per decade
First autumn frost
6 October
n/a
7 October
n/a
-0.4 days per decade
Growing days
163 days
n/a
166 days
n/a
+2.5 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
65 years, 1908 to 2005
A day with at least 55.2 mm (2.2 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 Stillwater 1 SE: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
55.2 mm (2.2 in)
5 years
74.6 mm (2.9 in)
10 years
89.4 mm (3.5 in)
25 years
110.8 mm (4.4 in)
50 years
128.8 mm (5.1 in)
100 years
148.7 mm (5.9 in)
Longer than the 65 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, 65 years of values from 1908 to 2005.
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: 130.6 mm (5.1 in) in 1987; 128.0 mm (5.0 in) in 2005; 114.3 mm (4.5 in) in 1993.
Download the Data
Data for Stillwater 1 SE standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Stillwater 1 SE 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.