Record envelope, standing records and threshold days for Mankato (USC00144982), Kansas, United States, with 133 years of record.
Key Facts for Mankato
Mankato (USC00144982) is a weather station in Kansas, United States at 39.79 latitude and -98.20 longitude, 533 m (1,750 ft) above sea level.
The station reports from 1893 to 2025, 133 years of record.
1,464 records set at Mankato still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Mankato set a daily record precipitation of 31.2 mm (1.2 in) on 17 June 2025.
About the Station
Location: Kansas, United States, 39.79 latitude, -98.20 longitude.
Elevation: 533 m (1,750 ft).
Period of record: 1893 to 2025, 133 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 Mankato. 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 Mankato, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
25.0 C (77.0 F)
-31.7 C (-25.1 F)
n/a
n/a
Feb
26.7 C (80.1 F)
-28.3 C (-18.9 F)
n/a
n/a
Mar
31.7 C (89.1 F)
-25.0 C (-13.0 F)
n/a
n/a
Apr
37.2 C (99.0 F)
-11.7 C (10.9 F)
n/a
n/a
May
37.8 C (100.0 F)
-7.2 C (19.0 F)
n/a
n/a
Jun
42.2 C (108.0 F)
2.8 C (37.0 F)
n/a
n/a
Jul
43.9 C (111.0 F)
5.6 C (42.1 F)
n/a
n/a
Aug
43.3 C (109.9 F)
5.6 C (42.1 F)
n/a
n/a
Sep
42.2 C (108.0 F)
-5.6 C (21.9 F)
n/a
n/a
Oct
35.6 C (96.1 F)
-12.2 C (10.0 F)
n/a
n/a
Nov
28.9 C (84.0 F)
-20.6 C (-5.1 F)
n/a
n/a
Dec
25.6 C (78.1 F)
-30.6 C (-23.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Mankato still stand. 1911 holds the most, with 57.
Standing records at Mankato by the year they were set
Year set
Standing records
1893
41
1909
25
1910
39
1911
57
1958
16
1959
33
1960
17
1961
22
1962
42
1963
46
1964
54
1965
19
1966
32
1967
32
1968
27
1969
27
1970
33
1971
16
1972
30
1973
14
1974
27
1975
24
1976
21
1977
17
1978
29
1979
31
1980
33
1981
30
1982
36
1983
46
1984
24
1985
25
1986
27
1987
9
1988
20
1989
45
1990
34
1991
43
1992
27
1993
17
1994
25
1995
15
1996
33
1997
30
1998
27
1999
28
2000
48
2001
11
2002
21
2003
28
2004
11
All-Time Record Progression
1 new records
1 all-time records were set at Mankato between 22 December 1989 and 22 December 1989. Each dot is a new record.
When Mankato set new all-time records
Date
Kind
Detail
1989-12-22
Record low maximum temperature
Record low maximum temperature -22.2 C (-8.0 F)
Wettest Day of Each Month
Sep: 148.6 mm (5.9 in)
The wettest day on record for each calendar month at Mankato. The most was 148.6 mm (5.9 in) on 14 September 1941.
Record daily precipitation for each month at Mankato
Month
Record daily precipitation (mm)
Date
Jan
24.6 mm (1.0 in)
23 January 1965
Feb
32.3 mm (1.3 in)
29 February 2004
Mar
58.4 mm (2.3 in)
7 March 1990
Apr
63.5 mm (2.5 in)
1 April 1960
May
92.2 mm (3.6 in)
5 May 2001
Jun
114.3 mm (4.5 in)
9 June 1941
Jul
95.8 mm (3.8 in)
26 July 2005
Aug
92.7 mm (3.6 in)
19 August 1961
Sep
148.6 mm (5.9 in)
14 September 1941
Oct
94.0 mm (3.7 in)
11 October 1986
Nov
80.0 mm (3.1 in)
20 November 1973
Dec
50.3 mm (2.0 in)
20 December 1911
Period of Record Coverage
1893 to 2005
Complete yearUnder 90 percent of days
52 years of record at Mankato, 1893 to 2005. 8 years have data for under 90 percent of days and are left out of rankings: 1909, 1958, 1986, 1987, 1989, 2001, 2004, 2005.
Cooler than the station meanWarmer than the station mean
One stripe for each of 38 complete years at Mankato, 1893 to 2003. Blue stripes are years cooler than the station's own mean of 11.0 C (51.8 F); red stripes are warmer. The coolest year was 1982, at 7.7 C (45.9 F), and the warmest was 1991, at 13.1 C (55.5 F). The strongest colour marks a difference of 3.3 C (5.9 F).
Annual mean temperature at Mankato as warming stripes, 1893 to 2003
Year
Annual mean temperature
Difference from the station mean
1893
10.7 C
-0.27 C
1910
11.8 C
+0.78 C
1959
12.0 C
+0.98 C
1960
10.9 C
-0.09 C
1961
11.4 C
+0.38 C
1962
12.0 C
+0.99 C
1963
13.1 C
+2.07 C
1964
12.8 C
+1.83 C
1966
11.4 C
+0.38 C
1967
10.6 C
-0.44 C
1968
10.8 C
-0.23 C
1969
10.3 C
-0.66 C
1970
11.4 C
+0.42 C
1971
10.8 C
-0.17 C
1972
10.6 C
-0.43 C
1973
11.4 C
+0.40 C
1974
11.5 C
+0.54 C
1977
11.9 C
+0.93 C
1978
9.7 C
-1.28 C
1979
9.3 C
-1.73 C
1980
10.5 C
-0.51 C
1981
10.5 C
-0.52 C
1982
7.7 C
-3.25 C
1983
9.8 C
-1.19 C
1984
9.9 C
-1.11 C
1985
10.0 C
-0.97 C
1988
11.8 C
+0.85 C
1990
12.2 C
+1.23 C
1991
13.1 C
+2.09 C
1993
9.3 C
-1.70 C
1994
11.1 C
+0.13 C
1995
10.7 C
-0.28 C
1996
9.8 C
-1.24 C
1997
10.3 C
-0.70 C
1998
12.1 C
+1.12 C
1999
12.0 C
+1.04 C
2000
11.8 C
+0.76 C
2003
10.7 C
-0.25 C
The fitted trend in annual mean temperature here over 1893 to 2003 is -0.1 C (-0.2 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.4 to 0.2) per decade. The slope is a straight line fitted to 38 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Mankato
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.1 C (-0.2 to 0.1) per decade
-0.1 F (-0.4 to 0.2) per decade
1893 to 2003
38
Not clearly different from zero
Mean daily maximum
-0.1 C (-0.3 to 0.1) per decade
-0.2 F (-0.6 to 0.1) per decade
1893 to 2003
38
Not clearly different from zero
Mean daily minimum
-0.01 C (-0.20 to 0.18) per decade
-0.02 F (-0.36 to 0.32) per decade
1893 to 2003
38
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
1893 to 2025
Yearly extremes at Mankato: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.9 C (111.0 F)
1964
40.0 C (104.0 F)
52
Coldest night (TNn)
-31.7 C (-25.1 F)
1982
-23.3 C (-9.9 F)
52
Wettest day (Rx1day)
148.6 mm (5.9 in)
1941
59.7 mm (2.4 in)
67
Wettest five days (Rx5day)
161.6 mm (6.4 in)
1993
90.2 mm (3.6 in)
66
Longest dry spell (CDD)
57 days
1959
33 days
66
Hottest day (TXx)
The hottest day of the year at Mankato, 1893 to 2025. The record is 43.9 C (111.0 F) in 1964, marked on the chart; the median year is 40.0 C (104.0 F).
Hottest day (TXx) at Mankato by year
Year
Hottest day (TXx)
1893
37.8 C (100.0 F)
1909
40.0 C (104.0 F)
1910
41.1 C (106.0 F)
1911
43.3 C (109.9 F)
1940
n/a
1941
n/a
1958
38.3 C (100.9 F)
1959
41.7 C (107.1 F)
1960
41.1 C (106.0 F)
1961
40.6 C (105.1 F)
1962
36.7 C (98.1 F)
1963
40.6 C (105.1 F)
1964
43.9 C (111.0 F)
1965
40.0 C (104.0 F)
1966
43.3 C (109.9 F)
1967
38.3 C (100.9 F)
1968
38.3 C (100.9 F)
1969
42.2 C (108.0 F)
1970
42.8 C (109.0 F)
1971
39.4 C (102.9 F)
1972
37.8 C (100.0 F)
1973
40.0 C (104.0 F)
1974
42.2 C (108.0 F)
1975
40.0 C (104.0 F)
1976
41.1 C (106.0 F)
1977
40.0 C (104.0 F)
1978
40.0 C (104.0 F)
1979
38.3 C (100.9 F)
1980
43.3 C (109.9 F)
1981
38.9 C (102.0 F)
1982
38.3 C (100.9 F)
1983
43.3 C (109.9 F)
1984
40.6 C (105.1 F)
1985
39.4 C (102.9 F)
1986
38.3 C (100.9 F)
1987
39.4 C (102.9 F)
1988
41.1 C (106.0 F)
1989
38.9 C (102.0 F)
1990
40.6 C (105.1 F)
1991
42.2 C (108.0 F)
1992
34.4 C (93.9 F)
1993
36.7 C (98.1 F)
1994
37.2 C (99.0 F)
1995
41.1 C (106.0 F)
1996
37.2 C (99.0 F)
1997
38.9 C (102.0 F)
1998
40.0 C (104.0 F)
1999
41.1 C (106.0 F)
2000
42.2 C (108.0 F)
2001
40.6 C (105.1 F)
2002
40.0 C (104.0 F)
2003
40.0 C (104.0 F)
2004
33.3 C (91.9 F)
2005
35.0 C (95.0 F)
2006
n/a
2007
n/a
2008
n/a
2009
n/a
2010
n/a
2011
n/a
2012
n/a
2013
n/a
2014
n/a
2015
n/a
2016
n/a
2017
n/a
2025
n/a
Coldest night (TNn)
The coldest night of the year at Mankato, 1893 to 2025. The record is -31.7 C (-25.1 F) in 1982, marked on the chart; the median year is -23.3 C (-9.9 F).
Coldest night (TNn) at Mankato by year
Year
Coldest night (TNn)
1893
-25.0 C (-13.0 F)
1909
-22.2 C (-8.0 F)
1910
-25.0 C (-13.0 F)
1911
-29.4 C (-20.9 F)
1940
n/a
1941
n/a
1958
-20.6 C (-5.1 F)
1959
-25.0 C (-13.0 F)
1960
-22.2 C (-8.0 F)
1961
-23.3 C (-9.9 F)
1962
-22.8 C (-9.0 F)
1963
-24.4 C (-11.9 F)
1964
-22.2 C (-8.0 F)
1965
-23.3 C (-9.9 F)
1966
-24.4 C (-11.9 F)
1967
-21.7 C (-7.1 F)
1968
-27.2 C (-17.0 F)
1969
-26.7 C (-16.1 F)
1970
-22.2 C (-8.0 F)
1971
-23.9 C (-11.0 F)
1972
-22.2 C (-8.0 F)
1973
-22.2 C (-8.0 F)
1974
-26.1 C (-15.0 F)
1975
-21.7 C (-7.1 F)
1976
-25.6 C (-14.1 F)
1977
-23.3 C (-9.9 F)
1978
-26.1 C (-15.0 F)
1979
-25.6 C (-14.1 F)
1980
-24.4 C (-11.9 F)
1981
-28.3 C (-18.9 F)
1982
-31.7 C (-25.1 F)
1983
-28.9 C (-20.0 F)
1984
-25.0 C (-13.0 F)
1985
-26.1 C (-15.0 F)
1986
-18.3 C (-0.9 F)
1987
-12.2 C (10.0 F)
1988
-22.2 C (-8.0 F)
1989
-30.6 C (-23.1 F)
1990
-23.9 C (-11.0 F)
1991
-19.4 C (-2.9 F)
1992
-17.2 C (1.0 F)
1993
-21.1 C (-6.0 F)
1994
-23.3 C (-9.9 F)
1995
-21.1 C (-6.0 F)
1996
-26.1 C (-15.0 F)
1997
-22.2 C (-8.0 F)
1998
-24.4 C (-11.9 F)
1999
-22.2 C (-8.0 F)
2000
-21.1 C (-6.0 F)
2001
-23.3 C (-9.9 F)
2002
-19.4 C (-2.9 F)
2003
-22.2 C (-8.0 F)
2004
-23.3 C (-9.9 F)
2005
12.2 C (54.0 F)
2006
n/a
2007
n/a
2008
n/a
2009
n/a
2010
n/a
2011
n/a
2012
n/a
2013
n/a
2014
n/a
2015
n/a
2016
n/a
2017
n/a
2025
n/a
Wettest day (Rx1day)
The wettest day of the year at Mankato, 1893 to 2025. The record is 148.6 mm (5.9 in) in 1941, marked on the chart; the median year is 59.7 mm (2.4 in).
Wettest day (Rx1day) at Mankato by year
Year
Wettest day (Rx1day)
1893
50.8 mm (2.0 in)
1909
50.8 mm (2.0 in)
1910
31.8 mm (1.3 in)
1911
50.3 mm (2.0 in)
1940
9.1 mm (0.36 in)
1941
148.6 mm (5.9 in)
1958
42.9 mm (1.7 in)
1959
75.4 mm (3.0 in)
1960
63.5 mm (2.5 in)
1961
92.7 mm (3.6 in)
1962
71.4 mm (2.8 in)
1963
48.3 mm (1.9 in)
1964
36.6 mm (1.4 in)
1965
68.1 mm (2.7 in)
1966
47.5 mm (1.9 in)
1967
49.5 mm (1.9 in)
1968
71.1 mm (2.8 in)
1969
43.2 mm (1.7 in)
1970
61.0 mm (2.4 in)
1971
64.8 mm (2.6 in)
1972
53.8 mm (2.1 in)
1973
80.0 mm (3.1 in)
1974
22.9 mm (0.9 in)
1975
44.2 mm (1.7 in)
1976
51.1 mm (2.0 in)
1977
49.5 mm (1.9 in)
1978
103.6 mm (4.1 in)
1979
58.9 mm (2.3 in)
1980
69.1 mm (2.7 in)
1981
83.8 mm (3.3 in)
1982
59.4 mm (2.3 in)
1983
46.7 mm (1.8 in)
1984
47.5 mm (1.9 in)
1985
76.7 mm (3.0 in)
1986
94.0 mm (3.7 in)
1987
59.7 mm (2.4 in)
1988
38.9 mm (1.5 in)
1989
82.8 mm (3.3 in)
1990
61.0 mm (2.4 in)
1991
27.2 mm (1.1 in)
1992
60.5 mm (2.4 in)
1993
62.2 mm (2.4 in)
1994
36.8 mm (1.4 in)
1995
64.8 mm (2.6 in)
1996
80.0 mm (3.1 in)
1997
48.0 mm (1.9 in)
1998
61.0 mm (2.4 in)
1999
36.6 mm (1.4 in)
2000
32.5 mm (1.3 in)
2001
92.2 mm (3.6 in)
2002
68.6 mm (2.7 in)
2003
90.7 mm (3.6 in)
2004
32.3 mm (1.3 in)
2005
95.8 mm (3.8 in)
2006
55.4 mm (2.2 in)
2007
53.3 mm (2.1 in)
2008
78.7 mm (3.1 in)
2009
50.8 mm (2.0 in)
2010
50.8 mm (2.0 in)
2011
67.3 mm (2.6 in)
2012
67.3 mm (2.6 in)
2013
61.0 mm (2.4 in)
2014
67.3 mm (2.6 in)
2015
74.7 mm (2.9 in)
2016
78.7 mm (3.1 in)
2017
35.6 mm (1.4 in)
2025
43.2 mm (1.7 in)
Wettest five days (Rx5day)
The wettest five days of the year at Mankato, 1893 to 2025. The record is 161.6 mm (6.4 in) in 1993, marked on the chart; the median year is 90.2 mm (3.6 in).
Wettest five days (Rx5day) at Mankato by year
Year
Wettest five days (Rx5day)
1893
89.2 mm (3.5 in)
1909
85.6 mm (3.4 in)
1910
45.0 mm (1.8 in)
1911
51.3 mm (2.0 in)
1940
n/a
1941
148.6 mm (5.9 in)
1958
86.3 mm (3.4 in)
1959
115.3 mm (4.5 in)
1960
67.8 mm (2.7 in)
1961
134.4 mm (5.3 in)
1962
150.6 mm (5.9 in)
1963
129.5 mm (5.1 in)
1964
69.3 mm (2.7 in)
1965
95.3 mm (3.8 in)
1966
63.3 mm (2.5 in)
1967
110.0 mm (4.3 in)
1968
104.9 mm (4.1 in)
1969
77.5 mm (3.1 in)
1970
84.9 mm (3.3 in)
1971
105.3 mm (4.1 in)
1972
68.1 mm (2.7 in)
1973
157.9 mm (6.2 in)
1974
45.0 mm (1.8 in)
1975
68.8 mm (2.7 in)
1976
67.1 mm (2.6 in)
1977
102.8 mm (4.0 in)
1978
116.6 mm (4.6 in)
1979
94.3 mm (3.7 in)
1980
87.0 mm (3.4 in)
1981
115.3 mm (4.5 in)
1982
70.6 mm (2.8 in)
1983
73.4 mm (2.9 in)
1984
73.4 mm (2.9 in)
1985
114.8 mm (4.5 in)
1986
108.0 mm (4.3 in)
1987
103.3 mm (4.1 in)
1988
61.2 mm (2.4 in)
1989
94.6 mm (3.7 in)
1990
85.6 mm (3.4 in)
1991
56.7 mm (2.2 in)
1992
98.1 mm (3.9 in)
1993
161.6 mm (6.4 in)
1994
58.5 mm (2.3 in)
1995
68.3 mm (2.7 in)
1996
141.0 mm (5.6 in)
1997
89.1 mm (3.5 in)
1998
102.1 mm (4.0 in)
1999
52.6 mm (2.1 in)
2000
51.0 mm (2.0 in)
2001
155.2 mm (6.1 in)
2002
139.4 mm (5.5 in)
2003
106.2 mm (4.2 in)
2004
66.6 mm (2.6 in)
2005
95.8 mm (3.8 in)
2006
96.6 mm (3.8 in)
2007
59.4 mm (2.3 in)
2008
82.6 mm (3.3 in)
2009
56.8 mm (2.2 in)
2010
91.5 mm (3.6 in)
2011
96.5 mm (3.8 in)
2012
67.3 mm (2.6 in)
2013
97.6 mm (3.8 in)
2014
99.8 mm (3.9 in)
2015
91.2 mm (3.6 in)
2016
112.5 mm (4.4 in)
2017
77.2 mm (3.0 in)
2025
69.1 mm (2.7 in)
Longest dry spell (CDD)
The longest dry spell of the year at Mankato, 1893 to 2025. The record is 57 days in 1959, marked on the chart; the median year is 33 days.
Longest dry spell (CDD) at Mankato by year
Year
Longest dry spell (CDD)
1893
44 days
1909
34 days
1910
51 days
1911
43 days
1940
n/a
1941
17 days
1958
41 days
1959
57 days
1960
27 days
1961
25 days
1962
26 days
1963
43 days
1964
33 days
1965
52 days
1966
39 days
1967
53 days
1968
40 days
1969
22 days
1970
50 days
1971
25 days
1972
40 days
1973
23 days
1974
25 days
1975
31 days
1976
34 days
1977
38 days
1978
31 days
1979
38 days
1980
39 days
1981
30 days
1982
21 days
1983
24 days
1984
30 days
1985
23 days
1986
33 days
1987
25 days
1988
35 days
1989
44 days
1990
30 days
1991
48 days
1992
29 days
1993
27 days
1994
45 days
1995
35 days
1996
46 days
1997
34 days
1998
31 days
1999
54 days
2000
28 days
2001
20 days
2002
35 days
2003
22 days
2004
22 days
2005
35 days
2006
44 days
2007
35 days
2008
25 days
2009
39 days
2010
42 days
2011
23 days
2012
33 days
2013
31 days
2014
28 days
2015
27 days
2016
16 days
2017
21 days
2025
10 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
38 years with a frost
Across 38 years with a frost, the median last spring frost at Mankato falls on 23 April and the median first autumn frost on 14 October, which leaves a median of 173 days between them.
Fitted over all years, the growing season changes by 0.0 days per decade at this station.
Frost dates and growing season at Mankato
Measure
Median, all years
Earliest period
Recent period (1966 to 2003)
Recent against earliest
Fitted trend
Last spring frost
23 April
n/a
24 April
n/a
-1.0 days per decade
First autumn frost
14 October
n/a
10 October
n/a
-1.1 days per decade
Growing days
173 days
n/a
170 days
n/a
0.0 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
54 years, 1893 to 2015
A day with at least 58.0 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 99.4 mm (3.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Mankato: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
58.0 mm (2.3 in)
5 years
73.1 mm (2.9 in)
10 years
81.2 mm (3.2 in)
25 years
89.7 mm (3.5 in)
50 years
95.0 mm (3.7 in)
100 years
99.4 mm (3.9 in)
Longer than the 54 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, 54 years of values from 1893 to 2015.
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: 103.6 mm (4.1 in) in 1978; 92.7 mm (3.6 in) in 1961; 90.7 mm (3.6 in) in 2003.
Download the Data
Data for Mankato standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Mankato 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.