Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Waseca. 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 Waseca, 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)
-50.0 C (-58.0 F)
n/a
n/a
Feb
10.0 C (50.0 F)
-48.3 C (-54.9 F)
n/a
n/a
Mar
17.8 C (64.0 F)
-40.0 C (-40.0 F)
n/a
n/a
Apr
32.8 C (91.0 F)
-30.0 C (-22.0 F)
n/a
n/a
May
36.7 C (98.1 F)
-10.6 C (12.9 F)
n/a
n/a
Jun
37.8 C (100.0 F)
-7.8 C (18.0 F)
n/a
n/a
Jul
37.2 C (99.0 F)
-3.9 C (25.0 F)
n/a
n/a
Aug
37.2 C (99.0 F)
-3.3 C (26.1 F)
n/a
n/a
Sep
35.0 C (95.0 F)
-13.3 C (8.1 F)
n/a
n/a
Oct
28.9 C (84.0 F)
-25.0 C (-13.0 F)
n/a
n/a
Nov
19.5 C (67.1 F)
-35.0 C (-31.0 F)
n/a
n/a
Dec
10.6 C (51.1 F)
-45.6 C (-50.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Waseca still stand. 1919 holds the most, with 52.
Standing records at Waseca by the year they were set
Year set
Standing records
1907
10
1908
15
1909
32
1910
37
1911
29
1912
9
1913
20
1914
14
1915
15
1916
24
1917
42
1918
33
1919
52
1920
11
1921
23
1922
10
1923
19
1924
30
1925
22
1926
22
1927
22
1928
18
1929
26
1930
17
1931
13
1932
14
1933
15
1934
31
1935
21
1936
52
1937
18
1938
17
1939
24
1940
13
1941
16
1942
24
1943
15
1944
11
1945
10
1946
10
1947
22
1948
14
1949
32
1950
27
1951
25
1952
8
1953
13
1954
46
1955
14
1956
29
1957
15
1958
12
1959
22
1960
11
1961
29
1962
16
1963
16
1964
7
1965
14
1966
9
1967
14
1968
24
1969
14
1970
15
1971
6
1972
12
1973
4
1974
13
1975
7
1976
13
1977
23
1978
11
1979
8
1980
21
1981
20
1982
9
1983
13
All-Time Record Progression
2 new records
2 all-time records were set at Waseca between 20 January 1943 and 14 January 1980. Each dot is a new record.
When Waseca set new all-time records
Date
Kind
Detail
1943-01-20
Record low minimum temperature
Record low minimum temperature -50.0 C (-58.0 F)
1980-01-14
Record daily snowfall
Record daily snowfall 29.0 cm (11.4 in)
Wettest Day of Each Month
Jun: 74.2 mm (2.9 in)
The wettest day on record for each calendar month at Waseca. The most was 74.2 mm (2.9 in) on 12 June 1908.
Record daily precipitation for each month at Waseca
Month
Record daily precipitation (mm)
Date
Jan
29.0 mm (1.1 in)
14 January 1980
Feb
22.9 mm (0.9 in)
12 February 1926
Mar
26.7 mm (1.1 in)
13 March 1974
Apr
30.5 mm (1.2 in)
17 April 1927
May
68.6 mm (2.7 in)
22 May 1944
Jun
74.2 mm (2.9 in)
12 June 1908
Jul
61.5 mm (2.4 in)
6 July 1956
Aug
69.3 mm (2.7 in)
24 August 1944
Sep
62.7 mm (2.5 in)
23 September 1930
Oct
42.9 mm (1.7 in)
2 October 1946
Nov
20.3 mm (0.8 in)
8 November 1939
Dec
27.9 mm (1.1 in)
15 December 1949
Period of Record Coverage
1907 to 1983
Complete yearUnder 90 percent of days
77 years of record at Waseca, 1907 to 1983. 2 years have data for under 90 percent of days and are left out of rankings: 1907, 1945.
Cooler than the station meanWarmer than the station mean
One stripe for each of 74 complete years at Waseca, 1908 to 1983. Blue stripes are years cooler than the station's own mean of 1.0 C (33.7 F); red stripes are warmer. The coolest year was 1951, at -1.5 C (29.4 F), and the warmest was 1981, at 3.9 C (39.1 F). The strongest colour marks a difference of 3.0 C (5.4 F).
Annual mean temperature at Waseca as warming stripes, 1908 to 1983
Year
Annual mean temperature
Difference from the station mean
1908
0.7 C
-0.22 C
1909
-1.1 C
-2.10 C
1910
1.3 C
+0.31 C
1911
-0.9 C
-1.85 C
1912
0.6 C
-0.34 C
1913
0.6 C
-0.39 C
1914
1.2 C
+0.25 C
1915
1.8 C
+0.82 C
1916
-0.4 C
-1.38 C
1918
1.1 C
+0.10 C
1919
0.4 C
-0.55 C
1920
0.8 C
-0.21 C
1921
0.7 C
-0.23 C
1922
0.6 C
-0.36 C
1923
1.2 C
+0.24 C
1924
0.2 C
-0.78 C
1925
0.5 C
-0.47 C
1926
1.3 C
+0.30 C
1927
-0.9 C
-1.91 C
1928
2.1 C
+1.18 C
1929
0.7 C
-0.24 C
1930
2.1 C
+1.13 C
1931
3.3 C
+2.33 C
1932
0.5 C
-0.48 C
1933
0.3 C
-0.71 C
1934
2.4 C
+1.45 C
1935
-0.1 C
-1.04 C
1936
-0.1 C
-1.09 C
1937
0.1 C
-0.89 C
1938
2.1 C
+1.11 C
1939
1.4 C
+0.48 C
1940
1.1 C
+0.13 C
1941
1.9 C
+0.89 C
1942
1.4 C
+0.45 C
1943
1.7 C
+0.78 C
1944
2.2 C
+1.22 C
1946
1.6 C
+0.67 C
1947
1.4 C
+0.39 C
1948
0.2 C
-0.74 C
1949
0.8 C
-0.20 C
1950
-1.4 C
-2.40 C
1951
-1.5 C
-2.43 C
1952
1.6 C
+0.66 C
1953
2.0 C
+1.03 C
1954
1.1 C
+0.11 C
1955
-0.5 C
-1.49 C
1956
0.9 C
-0.02 C
1957
1.7 C
+0.71 C
1958
2.3 C
+1.34 C
1959
1.2 C
+0.27 C
1960
1.5 C
+0.56 C
1961
1.4 C
+0.42 C
1962
1.5 C
+0.53 C
1963
2.3 C
+1.37 C
1964
1.2 C
+0.24 C
1965
0.0 C
-0.97 C
1966
-0.1 C
-1.07 C
1967
0.6 C
-0.33 C
1968
1.5 C
+0.58 C
1969
0.4 C
-0.55 C
1970
0.4 C
-0.60 C
1971
0.5 C
-0.47 C
1972
-0.3 C
-1.24 C
1973
1.0 C
+0.08 C
1974
1.1 C
+0.12 C
1975
0.6 C
-0.40 C
1976
2.7 C
+1.77 C
1977
1.9 C
+0.90 C
1978
1.0 C
+0.07 C
1979
1.0 C
+0.02 C
1980
1.9 C
+0.91 C
1981
3.9 C
+2.98 C
1982
-0.2 C
-1.21 C
1983
1.5 C
+0.57 C
The fitted trend in annual mean temperature here over 1908 to 1983 is 0.09 C (-0.01 to 0.20) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.17 F (-0.03 to 0.36) per decade. The slope is a straight line fitted to 74 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Waseca
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.09 C (-0.01 to 0.20) per decade
0.17 F (-0.03 to 0.36) per decade
1908 to 1983
74
Not clearly different from zero
Mean daily maximum
-0.02 C (-0.14 to 0.10) per decade
-0.04 F (-0.25 to 0.18) per decade
1908 to 1983
74
Not clearly different from zero
Mean daily minimum
0.2 C (0.1 to 0.3) per decade
0.4 F (0.2 to 0.6) per decade
1908 to 1983
74
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
1907 to 1983
Yearly extremes at Waseca: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.8 C (100.0 F)
1919
32.8 C (91.0 F)
77
Coldest night (TNn)
-50.0 C (-58.0 F)
1943
-40.0 C (-40.0 F)
77
Wettest day (Rx1day)
74.2 mm (2.9 in)
1908
32.3 mm (1.3 in)
77
Wettest five days (Rx5day)
139.2 mm (5.5 in)
1908
50.5 mm (2.0 in)
77
Longest dry spell (CDD)
60 days
1913
31 days
77
Hottest day (TXx)
The hottest day of the year at Waseca, 1907 to 1983. The record is 37.8 C (100.0 F) in 1919, marked on the chart; the median year is 32.8 C (91.0 F).
Hottest day (TXx) at Waseca by year
Year
Hottest day (TXx)
1907
28.3 C (82.9 F)
1908
30.0 C (86.0 F)
1909
30.0 C (86.0 F)
1910
30.0 C (86.0 F)
1911
31.7 C (89.1 F)
1912
33.9 C (93.0 F)
1913
30.0 C (86.0 F)
1914
33.3 C (91.9 F)
1915
30.6 C (87.1 F)
1916
30.0 C (86.0 F)
1917
31.1 C (88.0 F)
1918
33.9 C (93.0 F)
1919
37.8 C (100.0 F)
1920
32.8 C (91.0 F)
1921
32.8 C (91.0 F)
1922
35.0 C (95.0 F)
1923
30.0 C (86.0 F)
1924
36.7 C (98.1 F)
1925
33.3 C (91.9 F)
1926
36.1 C (97.0 F)
1927
31.1 C (88.0 F)
1928
32.8 C (91.0 F)
1929
34.4 C (93.9 F)
1930
32.2 C (90.0 F)
1931
31.7 C (89.1 F)
1932
32.2 C (90.0 F)
1933
33.9 C (93.0 F)
1934
31.7 C (89.1 F)
1935
36.1 C (97.0 F)
1936
36.7 C (98.1 F)
1937
37.2 C (99.0 F)
1938
33.3 C (91.9 F)
1939
32.8 C (91.0 F)
1940
33.9 C (93.0 F)
1941
37.2 C (99.0 F)
1942
31.7 C (89.1 F)
1943
32.8 C (91.0 F)
1944
32.8 C (91.0 F)
1945
33.3 C (91.9 F)
1946
35.6 C (96.1 F)
1947
36.1 C (97.0 F)
1948
33.9 C (93.0 F)
1949
34.4 C (93.9 F)
1950
34.4 C (93.9 F)
1951
30.0 C (86.0 F)
1952
29.4 C (84.9 F)
1953
34.4 C (93.9 F)
1954
30.6 C (87.1 F)
1955
33.9 C (93.0 F)
1956
31.7 C (89.1 F)
1957
34.4 C (93.9 F)
1958
35.0 C (95.0 F)
1959
33.9 C (93.0 F)
1960
34.4 C (93.9 F)
1961
37.2 C (99.0 F)
1962
32.8 C (91.0 F)
1963
31.7 C (89.1 F)
1964
36.1 C (97.0 F)
1965
32.2 C (90.0 F)
1966
31.1 C (88.0 F)
1967
35.0 C (95.0 F)
1968
31.7 C (89.1 F)
1969
31.1 C (88.0 F)
1970
35.0 C (95.0 F)
1971
32.2 C (90.0 F)
1972
33.3 C (91.9 F)
1973
32.2 C (90.0 F)
1974
32.2 C (90.0 F)
1975
31.7 C (89.1 F)
1976
31.1 C (88.0 F)
1977
31.7 C (89.1 F)
1978
31.1 C (88.0 F)
1979
33.0 C (91.4 F)
1980
31.0 C (87.8 F)
1981
33.0 C (91.4 F)
1982
33.0 C (91.4 F)
1983
34.5 C (94.1 F)
Coldest night (TNn)
The coldest night of the year at Waseca, 1907 to 1983. The record is -50.0 C (-58.0 F) in 1943, marked on the chart; the median year is -40.0 C (-40.0 F).
Coldest night (TNn) at Waseca by year
Year
Coldest night (TNn)
1907
-31.7 C (-25.1 F)
1908
-37.2 C (-35.0 F)
1909
-45.0 C (-49.0 F)
1910
-40.0 C (-40.0 F)
1911
-46.7 C (-52.1 F)
1912
-44.4 C (-47.9 F)
1913
-42.8 C (-45.0 F)
1914
-42.2 C (-44.0 F)
1915
-40.6 C (-41.1 F)
1916
-49.4 C (-56.9 F)
1917
-48.3 C (-54.9 F)
1918
-42.2 C (-44.0 F)
1919
-45.6 C (-50.1 F)
1920
-43.3 C (-45.9 F)
1921
-39.4 C (-38.9 F)
1922
-45.6 C (-50.1 F)
1923
-40.0 C (-40.0 F)
1924
-43.3 C (-45.9 F)
1925
-41.1 C (-42.0 F)
1926
-37.8 C (-36.0 F)
1927
-43.3 C (-45.9 F)
1928
-41.1 C (-42.0 F)
1929
-44.4 C (-47.9 F)
1930
-43.9 C (-47.0 F)
1931
-35.6 C (-32.1 F)
1932
-42.8 C (-45.0 F)
1933
-37.8 C (-36.0 F)
1934
-40.0 C (-40.0 F)
1935
-43.9 C (-47.0 F)
1936
-47.8 C (-54.0 F)
1937
-42.8 C (-45.0 F)
1938
-42.2 C (-44.0 F)
1939
-44.4 C (-47.9 F)
1940
-38.3 C (-36.9 F)
1941
-44.4 C (-47.9 F)
1942
-36.7 C (-34.1 F)
1943
-50.0 C (-58.0 F)
1944
-39.4 C (-38.9 F)
1945
-37.2 C (-35.0 F)
1946
-35.6 C (-32.1 F)
1947
-43.9 C (-47.0 F)
1948
-40.0 C (-40.0 F)
1949
-42.8 C (-45.0 F)
1950
-47.8 C (-54.0 F)
1951
-39.4 C (-38.9 F)
1952
-38.3 C (-36.9 F)
1953
-39.4 C (-38.9 F)
1954
-41.1 C (-42.0 F)
1955
-37.8 C (-36.0 F)
1956
-39.4 C (-38.9 F)
1957
-34.4 C (-29.9 F)
1958
-36.1 C (-33.0 F)
1959
-40.0 C (-40.0 F)
1960
-33.9 C (-29.0 F)
1961
-37.8 C (-36.0 F)
1962
-42.2 C (-44.0 F)
1963
-36.7 C (-34.1 F)
1964
-35.0 C (-31.0 F)
1965
-37.2 C (-35.0 F)
1966
-42.8 C (-45.0 F)
1967
-40.6 C (-41.1 F)
1968
-40.6 C (-41.1 F)
1969
-42.2 C (-44.0 F)
1970
-40.6 C (-41.1 F)
1971
-39.4 C (-38.9 F)
1972
-43.9 C (-47.0 F)
1973
-37.2 C (-35.0 F)
1974
-38.3 C (-36.9 F)
1975
-37.2 C (-35.0 F)
1976
-39.4 C (-38.9 F)
1977
-42.2 C (-44.0 F)
1978
-37.2 C (-35.0 F)
1979
-39.5 C (-39.1 F)
1980
-38.0 C (-36.4 F)
1981
-33.5 C (-28.3 F)
1982
-39.5 C (-39.1 F)
1983
-39.0 C (-38.2 F)
Wettest day (Rx1day)
The wettest day of the year at Waseca, 1907 to 1983. The record is 74.2 mm (2.9 in) in 1908, marked on the chart; the median year is 32.3 mm (1.3 in).
Wettest day (Rx1day) at Waseca by year
Year
Wettest day (Rx1day)
1907
35.1 mm (1.4 in)
1908
74.2 mm (2.9 in)
1909
40.6 mm (1.6 in)
1910
21.8 mm (0.9 in)
1911
38.1 mm (1.5 in)
1912
49.0 mm (1.9 in)
1913
26.4 mm (1.0 in)
1914
33.0 mm (1.3 in)
1915
22.1 mm (0.9 in)
1916
50.8 mm (2.0 in)
1917
16.5 mm (0.6 in)
1918
16.5 mm (0.6 in)
1919
41.4 mm (1.6 in)
1920
40.1 mm (1.6 in)
1921
26.9 mm (1.1 in)
1922
39.6 mm (1.6 in)
1923
40.9 mm (1.6 in)
1924
37.6 mm (1.5 in)
1925
36.6 mm (1.4 in)
1926
26.4 mm (1.0 in)
1927
39.4 mm (1.6 in)
1928
16.0 mm (0.6 in)
1929
19.3 mm (0.8 in)
1930
62.7 mm (2.5 in)
1931
45.5 mm (1.8 in)
1932
60.2 mm (2.4 in)
1933
49.0 mm (1.9 in)
1934
22.1 mm (0.9 in)
1935
15.2 mm (0.6 in)
1936
22.9 mm (0.9 in)
1937
34.3 mm (1.4 in)
1938
34.0 mm (1.3 in)
1939
28.7 mm (1.1 in)
1940
28.4 mm (1.1 in)
1941
20.1 mm (0.8 in)
1942
55.6 mm (2.2 in)
1943
19.3 mm (0.8 in)
1944
69.3 mm (2.7 in)
1945
29.5 mm (1.2 in)
1946
42.9 mm (1.7 in)
1947
26.9 mm (1.1 in)
1948
24.1 mm (0.9 in)
1949
27.9 mm (1.1 in)
1950
42.7 mm (1.7 in)
1951
31.8 mm (1.3 in)
1952
30.0 mm (1.2 in)
1953
33.5 mm (1.3 in)
1954
46.7 mm (1.8 in)
1955
26.7 mm (1.1 in)
1956
61.5 mm (2.4 in)
1957
43.9 mm (1.7 in)
1958
22.6 mm (0.9 in)
1959
27.9 mm (1.1 in)
1960
32.0 mm (1.3 in)
1961
27.2 mm (1.1 in)
1962
45.2 mm (1.8 in)
1963
22.6 mm (0.9 in)
1964
33.8 mm (1.3 in)
1965
54.6 mm (2.1 in)
1966
24.9 mm (1.0 in)
1967
26.4 mm (1.0 in)
1968
30.7 mm (1.2 in)
1969
25.4 mm (1.0 in)
1970
40.1 mm (1.6 in)
1971
34.5 mm (1.4 in)
1972
29.7 mm (1.2 in)
1973
36.8 mm (1.4 in)
1974
38.9 mm (1.5 in)
1975
43.2 mm (1.7 in)
1976
40.9 mm (1.6 in)
1977
32.8 mm (1.3 in)
1978
32.3 mm (1.3 in)
1979
22.8 mm (0.9 in)
1980
29.0 mm (1.1 in)
1981
29.4 mm (1.2 in)
1982
28.8 mm (1.1 in)
1983
30.4 mm (1.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Waseca, 1907 to 1983. The record is 139.2 mm (5.5 in) in 1908, marked on the chart; the median year is 50.5 mm (2.0 in).
Wettest five days (Rx5day) at Waseca by year
Year
Wettest five days (Rx5day)
1907
62.5 mm (2.5 in)
1908
139.2 mm (5.5 in)
1909
72.4 mm (2.9 in)
1910
32.0 mm (1.3 in)
1911
58.3 mm (2.3 in)
1912
61.7 mm (2.4 in)
1913
39.1 mm (1.5 in)
1914
52.1 mm (2.1 in)
1915
30.9 mm (1.2 in)
1916
93.4 mm (3.7 in)
1917
33.8 mm (1.3 in)
1918
28.8 mm (1.1 in)
1919
83.8 mm (3.3 in)
1920
53.4 mm (2.1 in)
1921
43.1 mm (1.7 in)
1922
67.8 mm (2.7 in)
1923
49.3 mm (1.9 in)
1924
37.6 mm (1.5 in)
1925
45.0 mm (1.8 in)
1926
33.3 mm (1.3 in)
1927
61.4 mm (2.4 in)
1928
29.0 mm (1.1 in)
1929
22.9 mm (0.9 in)
1930
84.8 mm (3.3 in)
1931
50.1 mm (2.0 in)
1932
60.2 mm (2.4 in)
1933
60.7 mm (2.4 in)
1934
31.0 mm (1.2 in)
1935
29.2 mm (1.1 in)
1936
31.8 mm (1.3 in)
1937
44.4 mm (1.7 in)
1938
42.7 mm (1.7 in)
1939
54.9 mm (2.2 in)
1940
54.9 mm (2.2 in)
1941
35.3 mm (1.4 in)
1942
84.0 mm (3.3 in)
1943
36.9 mm (1.5 in)
1944
96.5 mm (3.8 in)
1945
33.3 mm (1.3 in)
1946
46.0 mm (1.8 in)
1947
54.3 mm (2.1 in)
1948
30.7 mm (1.2 in)
1949
32.0 mm (1.3 in)
1950
69.1 mm (2.7 in)
1951
68.4 mm (2.7 in)
1952
47.5 mm (1.9 in)
1953
56.7 mm (2.2 in)
1954
91.9 mm (3.6 in)
1955
46.5 mm (1.8 in)
1956
88.6 mm (3.5 in)
1957
56.6 mm (2.2 in)
1958
27.4 mm (1.1 in)
1959
50.0 mm (2.0 in)
1960
69.4 mm (2.7 in)
1961
38.4 mm (1.5 in)
1962
64.5 mm (2.5 in)
1963
42.4 mm (1.7 in)
1964
46.7 mm (1.8 in)
1965
87.7 mm (3.5 in)
1966
51.0 mm (2.0 in)
1967
42.6 mm (1.7 in)
1968
46.7 mm (1.8 in)
1969
49.1 mm (1.9 in)
1970
104.4 mm (4.1 in)
1971
50.5 mm (2.0 in)
1972
41.4 mm (1.6 in)
1973
55.3 mm (2.2 in)
1974
54.7 mm (2.2 in)
1975
68.3 mm (2.7 in)
1976
80.8 mm (3.2 in)
1977
80.8 mm (3.2 in)
1978
37.3 mm (1.5 in)
1979
33.5 mm (1.3 in)
1980
52.2 mm (2.1 in)
1981
38.0 mm (1.5 in)
1982
70.6 mm (2.8 in)
1983
54.4 mm (2.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Waseca, 1907 to 1983. The record is 60 days in 1913, marked on the chart; the median year is 31 days.
Longest dry spell (CDD) at Waseca by year
Year
Longest dry spell (CDD)
1907
47 days
1908
40 days
1909
26 days
1910
32 days
1911
39 days
1912
33 days
1913
60 days
1914
32 days
1915
33 days
1916
55 days
1917
37 days
1918
39 days
1919
46 days
1920
24 days
1921
48 days
1922
48 days
1923
33 days
1924
31 days
1925
26 days
1926
35 days
1927
30 days
1928
45 days
1929
48 days
1930
44 days
1931
36 days
1932
26 days
1933
24 days
1934
54 days
1935
24 days
1936
32 days
1937
24 days
1938
34 days
1939
19 days
1940
23 days
1941
33 days
1942
33 days
1943
34 days
1944
27 days
1945
25 days
1946
20 days
1947
33 days
1948
28 days
1949
24 days
1950
22 days
1951
20 days
1952
38 days
1953
30 days
1954
25 days
1955
24 days
1956
32 days
1957
30 days
1958
33 days
1959
35 days
1960
30 days
1961
23 days
1962
19 days
1963
31 days
1964
20 days
1965
45 days
1966
27 days
1967
46 days
1968
24 days
1969
25 days
1970
42 days
1971
31 days
1972
23 days
1973
26 days
1974
60 days
1975
27 days
1976
46 days
1977
39 days
1978
23 days
1979
21 days
1980
25 days
1981
25 days
1982
31 days
1983
18 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
74 years with a frost
Across 74 years with a frost, the median last spring frost at Waseca falls on 1 June and the median first autumn frost on 4 September, which leaves a median of 94 days between them.
In 1954 to 1983 the median growing season was 102 days. That is 15 days more than in 1908 to 1938.
Fitted over all years, the growing season changes by +4.5 days per decade at this station.
Frost dates and growing season at Waseca
Measure
Median, all years
Earliest period (1908 to 1938)
Recent period (1954 to 1983)
Recent against earliest
Fitted trend
Last spring frost
1 June
5 June
27 May
9 days earlier
-1.8 days per decade
First autumn frost
4 September
28 August
9 September
12 days later
+2.7 days per decade
Growing days
94 days
87 days
102 days
15 days more
+4.5 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
72 years, 1908 to 1983
A day with at least 32.3 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 74.7 mm (2.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Waseca: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
32.3 mm (1.3 in)
5 years
43.3 mm (1.7 in)
10 years
50.7 mm (2.0 in)
25 years
60.2 mm (2.4 in)
50 years
67.4 mm (2.7 in)
100 years
74.7 mm (2.9 in)
Longer than the 72 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, 72 years of values from 1908 to 1983.
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: 74.2 mm (2.9 in) in 1908; 69.3 mm (2.7 in) in 1944; 62.7 mm (2.5 in) in 1930.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Waseca standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Waseca 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.