Record envelope, standing records and threshold days for Monroe City (USC00235708), Missouri, United States, with 125 years of record.
Key Facts for Monroe City
Monroe City (USC00235708) is a weather station in Missouri, United States at 39.63 latitude and -91.72 longitude, 226 m (741 ft) above sea level.
The station reports from 1901 to 2025, 125 years of record.
1,464 records set at Monroe City still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Monroe City tied a daily record high maximum temperature of 28.9 C (84.0 F) on 14 April 2025.
About the Station
Location: Missouri, United States, 39.63 latitude, -91.72 longitude.
Elevation: 226 m (741 ft).
Period of record: 1901 to 2025, 125 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
5 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 Monroe City. The lines show the 2026 daily maximum and minimum. 5 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Monroe City, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
23.3 C (73.9 F)
-29.4 C (-20.9 F)
10.6 C (51.1 F)
-22.8 C (-9.0 F)
Feb
27.2 C (81.0 F)
-33.3 C (-27.9 F)
19.4 C (66.9 F)
-21.1 C (-6.0 F)
Mar
31.7 C (89.1 F)
-23.3 C (-9.9 F)
26.1 C (79.0 F)
-8.9 C (16.0 F)
Apr
33.3 C (91.9 F)
-8.9 C (16.0 F)
28.9 C (84.0 F)
-2.8 C (27.0 F)
May
34.4 C (93.9 F)
-2.8 C (27.0 F)
27.2 C (81.0 F)
5.6 C (42.1 F)
Jun
39.4 C (102.9 F)
3.9 C (39.0 F)
n/a
n/a
Jul
42.2 C (108.0 F)
8.3 C (46.9 F)
n/a
n/a
Aug
41.1 C (106.0 F)
5.0 C (41.0 F)
n/a
n/a
Sep
38.9 C (102.0 F)
0.6 C (33.1 F)
n/a
n/a
Oct
34.4 C (93.9 F)
-7.8 C (18.0 F)
n/a
n/a
Nov
27.2 C (81.0 F)
-21.7 C (-7.1 F)
n/a
n/a
Dec
23.3 C (73.9 F)
-28.9 C (-20.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Monroe City still stand. 1963 holds the most, with 56.
Standing records at Monroe City by the year they were set
Year set
Standing records
1901
24
1902
44
1903
36
1904
37
1905
29
1906
41
1907
48
1962
39
1963
56
1964
29
1965
39
1966
29
1967
40
1968
21
1969
5
1970
30
1971
33
1972
34
1973
17
1974
27
1975
24
1976
30
1977
22
1978
17
1979
19
1980
56
1981
17
1982
25
1983
39
1984
28
1985
16
1986
17
1987
23
1988
32
1989
5
2010
3
2011
26
2012
44
2013
34
2014
48
2015
22
2016
22
2017
43
2018
38
2019
31
2020
23
2021
22
2022
23
2023
23
2024
24
2025
10
All-Time Record Progression
5 new records
5 all-time records were set at Monroe City between 19 December 1973 and 10 September 2014. Each dot is a new record.
When Monroe City set new all-time records
Date
Kind
Detail
1973-12-19
Record daily snowfall
Record daily snowfall 25.4 cm (10.0 in)
1975-02-24
Record daily snowfall
Record daily snowfall 30.5 cm (12.0 in)
1978-02-13
Record daily snowfall
Record daily snowfall 33.0 cm (13.0 in)
2011-02-02
Record snow depth
Record snow depth 35.6 cm (14.0 in)
2014-09-10
Record daily precipitation
Record daily precipitation 121.9 mm (4.8 in)
Wettest Day of Each Month
Sep: 121.9 mm (4.8 in)
The wettest day on record for each calendar month at Monroe City. The most was 121.9 mm (4.8 in) on 10 September 2014.
Record daily precipitation for each month at Monroe City
Month
Record daily precipitation (mm)
Date
Jan
72.6 mm (2.9 in)
24 January 1938
Feb
46.7 mm (1.8 in)
26 February 1936
Mar
87.4 mm (3.4 in)
28 March 1951
Apr
110.5 mm (4.4 in)
21 April 1973
May
97.8 mm (3.9 in)
18 May 1981
Jun
114.6 mm (4.5 in)
12 June 1931
Jul
99.6 mm (3.9 in)
13 July 1937
Aug
109.7 mm (4.3 in)
5 August 1970
Sep
121.9 mm (4.8 in)
10 September 2014
Oct
88.6 mm (3.5 in)
17 October 1946
Nov
71.9 mm (2.8 in)
15 November 1964
Dec
74.9 mm (2.9 in)
3 December 1982
Period of Record Coverage
1901 to 2025
Complete yearUnder 90 percent of days
51 years of record at Monroe City, 1901 to 2025. 10 years have data for under 90 percent of days and are left out of rankings: 1901, 1904, 1907, 1962, 1969, 1970, 1989, 2010 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 39 complete years at Monroe City, 1902 to 2023. Blue stripes are years cooler than the station's own mean of 12.1 C (53.9 F); red stripes are warmer. The coolest year was 2014, at 10.0 C (50.0 F), and the warmest was 2012, at 13.5 C (56.4 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Monroe City as warming stripes, 1902 to 2023
Year
Annual mean temperature
Difference from the station mean
1902
11.1 C
-1.09 C
1903
10.7 C
-1.43 C
1905
10.8 C
-1.35 C
1906
11.2 C
-0.99 C
1963
12.5 C
+0.36 C
1964
13.1 C
+0.91 C
1965
13.0 C
+0.85 C
1966
12.2 C
+0.04 C
1967
12.2 C
+0.06 C
1968
12.3 C
+0.14 C
1971
12.8 C
+0.69 C
1972
12.3 C
+0.12 C
1973
13.2 C
+1.03 C
1974
12.6 C
+0.44 C
1975
12.5 C
+0.36 C
1976
12.1 C
-0.02 C
1977
12.6 C
+0.42 C
1978
11.3 C
-0.86 C
1979
11.4 C
-0.79 C
1980
12.7 C
+0.59 C
1981
12.9 C
+0.72 C
1982
11.9 C
-0.21 C
1983
12.6 C
+0.44 C
1984
12.7 C
+0.54 C
1985
11.7 C
-0.47 C
1986
13.2 C
+1.05 C
1987
13.4 C
+1.26 C
1988
12.3 C
+0.14 C
2011
11.8 C
-0.32 C
2012
13.5 C
+1.39 C
2013
10.6 C
-1.50 C
2014
10.0 C
-2.14 C
2016
12.9 C
+0.76 C
2017
12.7 C
+0.52 C
2018
11.6 C
-0.55 C
2020
11.9 C
-0.21 C
2021
12.1 C
-0.02 C
2022
10.9 C
-1.21 C
2023
12.7 C
+0.52 C
The fitted trend in annual mean temperature here over 1902 to 2023 is 0.06 C (-0.03 to 0.14) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.10 F (-0.05 to 0.26) per decade. The slope is a straight line fitted to 39 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Monroe City
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.06 C (-0.03 to 0.14) per decade
0.10 F (-0.05 to 0.26) per decade
1902 to 2023
39
Not clearly different from zero
Mean daily maximum
0.03 C (-0.07 to 0.14) per decade
0.1 F (-0.1 to 0.3) per decade
1902 to 2023
39
Not clearly different from zero
Mean daily minimum
0.08 C (0.00 to 0.16) per decade
0.15 F (0.01 to 0.29) per decade
1902 to 2023
39
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
1901 to 2025
Yearly extremes at Monroe City: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.2 C (108.0 F)
1980
36.7 C (98.1 F)
51
Coldest night (TNn)
-33.3 C (-27.9 F)
1905
-24.4 C (-11.9 F)
51
Wettest day (Rx1day)
121.9 mm (4.8 in)
2014
67.3 mm (2.6 in)
86
Wettest five days (Rx5day)
251.2 mm (9.9 in)
1970
108.2 mm (4.3 in)
86
Longest dry spell (CDD)
54 days
1956
23 days
86
Hottest day (TXx)
The hottest day of the year at Monroe City, 1901 to 2025. The record is 42.2 C (108.0 F) in 1980, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Monroe City by year
Year
Hottest day (TXx)
1901
35.6 C (96.1 F)
1902
35.0 C (95.0 F)
1903
36.1 C (97.0 F)
1904
34.4 C (93.9 F)
1905
38.3 C (100.9 F)
1906
37.2 C (99.0 F)
1907
35.6 C (96.1 F)
1927
n/a
1928
n/a
1929
n/a
1930
n/a
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
n/a
1936
n/a
1937
n/a
1938
n/a
1939
n/a
1940
n/a
1941
n/a
1942
n/a
1943
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
n/a
1959
n/a
1960
n/a
1961
n/a
1962
38.3 C (100.9 F)
1963
38.3 C (100.9 F)
1964
40.6 C (105.1 F)
1965
36.1 C (97.0 F)
1966
39.4 C (102.9 F)
1967
35.6 C (96.1 F)
1968
35.6 C (96.1 F)
1969
22.8 C (73.0 F)
1970
38.9 C (102.0 F)
1971
36.7 C (98.1 F)
1972
37.8 C (100.0 F)
1973
35.6 C (96.1 F)
1974
38.3 C (100.9 F)
1975
38.3 C (100.9 F)
1976
38.3 C (100.9 F)
1977
38.3 C (100.9 F)
1978
36.7 C (98.1 F)
1979
37.2 C (99.0 F)
1980
42.2 C (108.0 F)
1981
37.2 C (99.0 F)
1982
36.7 C (98.1 F)
1983
40.0 C (104.0 F)
1984
40.0 C (104.0 F)
1985
35.0 C (95.0 F)
1986
36.1 C (97.0 F)
1987
38.9 C (102.0 F)
1988
40.0 C (104.0 F)
1989
23.9 C (75.0 F)
2010
28.9 C (84.0 F)
2011
38.9 C (102.0 F)
2012
40.0 C (104.0 F)
2013
37.2 C (99.0 F)
2014
33.3 C (91.9 F)
2015
34.4 C (93.9 F)
2016
36.1 C (97.0 F)
2017
35.6 C (96.1 F)
2018
34.4 C (93.9 F)
2019
33.9 C (93.0 F)
2020
34.4 C (93.9 F)
2021
35.0 C (95.0 F)
2022
36.1 C (97.0 F)
2023
39.4 C (102.9 F)
2024
37.2 C (99.0 F)
2025
28.9 C (84.0 F)
Coldest night (TNn)
The coldest night of the year at Monroe City, 1901 to 2025. The record is -33.3 C (-27.9 F) in 1905, marked on the chart; the median year is -24.4 C (-11.9 F).
Coldest night (TNn) at Monroe City by year
Year
Coldest night (TNn)
1901
-28.9 C (-20.0 F)
1902
-24.4 C (-11.9 F)
1903
-28.3 C (-18.9 F)
1904
-28.3 C (-18.9 F)
1905
-33.3 C (-27.9 F)
1906
-20.0 C (-4.0 F)
1907
-22.8 C (-9.0 F)
1927
n/a
1928
n/a
1929
n/a
1930
n/a
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
n/a
1936
n/a
1937
n/a
1938
n/a
1939
n/a
1940
n/a
1941
n/a
1942
n/a
1943
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
n/a
1959
n/a
1960
n/a
1961
n/a
1962
-23.3 C (-9.9 F)
1963
-25.0 C (-13.0 F)
1964
-21.7 C (-7.1 F)
1965
-24.4 C (-11.9 F)
1966
-25.0 C (-13.0 F)
1967
-19.4 C (-2.9 F)
1968
-25.0 C (-13.0 F)
1969
-23.3 C (-9.9 F)
1970
-26.1 C (-15.0 F)
1971
-20.6 C (-5.1 F)
1972
-27.8 C (-18.0 F)
1973
-20.0 C (-4.0 F)
1974
-27.2 C (-17.0 F)
1975
-23.3 C (-9.9 F)
1976
-25.0 C (-13.0 F)
1977
-27.8 C (-18.0 F)
1978
-23.3 C (-9.9 F)
1979
-27.2 C (-17.0 F)
1980
-22.2 C (-8.0 F)
1981
-25.0 C (-13.0 F)
1982
-29.4 C (-20.9 F)
1983
-27.2 C (-17.0 F)
1984
-23.3 C (-9.9 F)
1985
-28.9 C (-20.0 F)
1986
-20.6 C (-5.1 F)
1987
-22.8 C (-9.0 F)
1988
-25.6 C (-14.1 F)
1989
-18.9 C (-2.0 F)
2010
-18.9 C (-2.0 F)
2011
-25.6 C (-14.1 F)
2012
-12.8 C (9.0 F)
2013
-17.8 C (0.0 F)
2014
-25.6 C (-14.1 F)
2015
-20.6 C (-5.1 F)
2016
-21.7 C (-7.1 F)
2017
-22.8 C (-9.0 F)
2018
-25.0 C (-13.0 F)
2019
-24.4 C (-11.9 F)
2020
-22.2 C (-8.0 F)
2021
-25.0 C (-13.0 F)
2022
-23.3 C (-9.9 F)
2023
-15.6 C (3.9 F)
2024
-26.7 C (-16.1 F)
2025
-22.8 C (-9.0 F)
Wettest day (Rx1day)
The wettest day of the year at Monroe City, 1901 to 2025. The record is 121.9 mm (4.8 in) in 2014, marked on the chart; the median year is 67.3 mm (2.6 in).
Wettest day (Rx1day) at Monroe City by year
Year
Wettest day (Rx1day)
1901
43.2 mm (1.7 in)
1902
45.7 mm (1.8 in)
1903
85.1 mm (3.4 in)
1904
81.0 mm (3.2 in)
1905
51.8 mm (2.0 in)
1906
85.1 mm (3.4 in)
1907
66.0 mm (2.6 in)
1927
62.5 mm (2.5 in)
1928
83.8 mm (3.3 in)
1929
58.2 mm (2.3 in)
1930
66.5 mm (2.6 in)
1931
114.6 mm (4.5 in)
1932
84.3 mm (3.3 in)
1933
43.9 mm (1.7 in)
1934
53.3 mm (2.1 in)
1935
67.8 mm (2.7 in)
1936
46.7 mm (1.8 in)
1937
99.6 mm (3.9 in)
1938
72.6 mm (2.9 in)
1939
103.9 mm (4.1 in)
1940
33.3 mm (1.3 in)
1941
57.7 mm (2.3 in)
1942
77.5 mm (3.1 in)
1943
58.2 mm (2.3 in)
1944
96.3 mm (3.8 in)
1945
57.9 mm (2.3 in)
1946
88.6 mm (3.5 in)
1947
101.1 mm (4.0 in)
1948
72.4 mm (2.9 in)
1949
70.6 mm (2.8 in)
1950
33.3 mm (1.3 in)
1951
87.4 mm (3.4 in)
1952
69.1 mm (2.7 in)
1953
58.4 mm (2.3 in)
1954
56.1 mm (2.2 in)
1955
80.8 mm (3.2 in)
1956
70.1 mm (2.8 in)
1957
64.5 mm (2.5 in)
1958
81.8 mm (3.2 in)
1959
48.8 mm (1.9 in)
1960
57.2 mm (2.3 in)
1961
104.1 mm (4.1 in)
1962
57.2 mm (2.3 in)
1963
67.8 mm (2.7 in)
1964
97.0 mm (3.8 in)
1965
97.8 mm (3.9 in)
1966
51.8 mm (2.0 in)
1967
69.1 mm (2.7 in)
1968
69.1 mm (2.7 in)
1969
87.9 mm (3.5 in)
1970
109.7 mm (4.3 in)
1971
69.1 mm (2.7 in)
1972
44.5 mm (1.8 in)
1973
110.5 mm (4.4 in)
1974
52.8 mm (2.1 in)
1975
66.8 mm (2.6 in)
1976
56.1 mm (2.2 in)
1977
71.9 mm (2.8 in)
1978
58.4 mm (2.3 in)
1979
63.2 mm (2.5 in)
1980
46.0 mm (1.8 in)
1981
97.8 mm (3.9 in)
1982
74.9 mm (2.9 in)
1983
84.3 mm (3.3 in)
1984
86.4 mm (3.4 in)
1985
59.7 mm (2.4 in)
1986
101.6 mm (4.0 in)
1987
63.5 mm (2.5 in)
1988
44.5 mm (1.8 in)
1989
18.3 mm (0.7 in)
2010
23.1 mm (0.9 in)
2011
38.1 mm (1.5 in)
2012
73.7 mm (2.9 in)
2013
94.0 mm (3.7 in)
2014
121.9 mm (4.8 in)
2015
71.1 mm (2.8 in)
2016
54.6 mm (2.1 in)
2017
80.8 mm (3.2 in)
2018
81.3 mm (3.2 in)
2019
64.5 mm (2.5 in)
2020
50.8 mm (2.0 in)
2021
58.4 mm (2.3 in)
2022
63.5 mm (2.5 in)
2023
50.8 mm (2.0 in)
2024
53.3 mm (2.1 in)
2025
24.9 mm (1.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Monroe City, 1901 to 2025. The record is 251.2 mm (9.9 in) in 1970, marked on the chart; the median year is 108.2 mm (4.3 in).
Wettest five days (Rx5day) at Monroe City by year
Year
Wettest five days (Rx5day)
1901
43.5 mm (1.7 in)
1902
69.8 mm (2.7 in)
1903
108.0 mm (4.3 in)
1904
108.5 mm (4.3 in)
1905
81.8 mm (3.2 in)
1906
131.9 mm (5.2 in)
1907
120.2 mm (4.7 in)
1927
117.4 mm (4.6 in)
1928
118.6 mm (4.7 in)
1929
92.2 mm (3.6 in)
1930
87.3 mm (3.4 in)
1931
149.4 mm (5.9 in)
1932
143.0 mm (5.6 in)
1933
70.0 mm (2.8 in)
1934
60.4 mm (2.4 in)
1935
112.8 mm (4.4 in)
1936
79.3 mm (3.1 in)
1937
108.2 mm (4.3 in)
1938
138.6 mm (5.5 in)
1939
150.1 mm (5.9 in)
1940
52.3 mm (2.1 in)
1941
157.0 mm (6.2 in)
1942
115.9 mm (4.6 in)
1943
128.3 mm (5.1 in)
1944
135.7 mm (5.3 in)
1945
118.1 mm (4.6 in)
1946
115.3 mm (4.5 in)
1947
102.6 mm (4.0 in)
1948
124.2 mm (4.9 in)
1949
126.4 mm (5.0 in)
1950
62.0 mm (2.4 in)
1951
97.8 mm (3.9 in)
1952
69.1 mm (2.7 in)
1953
66.3 mm (2.6 in)
1954
66.5 mm (2.6 in)
1955
121.7 mm (4.8 in)
1956
108.7 mm (4.3 in)
1957
123.4 mm (4.9 in)
1958
167.6 mm (6.6 in)
1959
75.2 mm (3.0 in)
1960
126.6 mm (5.0 in)
1961
197.8 mm (7.8 in)
1962
57.2 mm (2.3 in)
1963
83.5 mm (3.3 in)
1964
136.4 mm (5.4 in)
1965
110.8 mm (4.4 in)
1966
74.2 mm (2.9 in)
1967
108.4 mm (4.3 in)
1968
110.5 mm (4.4 in)
1969
210.7 mm (8.3 in)
1970
251.2 mm (9.9 in)
1971
96.6 mm (3.8 in)
1972
57.7 mm (2.3 in)
1973
125.3 mm (4.9 in)
1974
95.6 mm (3.8 in)
1975
89.1 mm (3.5 in)
1976
75.9 mm (3.0 in)
1977
91.3 mm (3.6 in)
1978
63.7 mm (2.5 in)
1979
78.4 mm (3.1 in)
1980
72.1 mm (2.8 in)
1981
149.9 mm (5.9 in)
1982
162.6 mm (6.4 in)
1983
117.3 mm (4.6 in)
1984
121.9 mm (4.8 in)
1985
108.1 mm (4.3 in)
1986
157.4 mm (6.2 in)
1987
95.3 mm (3.8 in)
1988
69.1 mm (2.7 in)
1989
18.3 mm (0.7 in)
2010
29.5 mm (1.2 in)
2011
62.8 mm (2.5 in)
2012
88.4 mm (3.5 in)
2013
129.6 mm (5.1 in)
2014
141.0 mm (5.6 in)
2015
113.5 mm (4.5 in)
2016
83.4 mm (3.3 in)
2017
142.5 mm (5.6 in)
2018
141.0 mm (5.6 in)
2019
91.5 mm (3.6 in)
2020
71.9 mm (2.8 in)
2021
99.3 mm (3.9 in)
2022
105.4 mm (4.1 in)
2023
60.5 mm (2.4 in)
2024
114.3 mm (4.5 in)
2025
27.4 mm (1.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Monroe City, 1901 to 2025. The record is 54 days in 1956, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at Monroe City by year
Year
Longest dry spell (CDD)
1901
23 days
1902
19 days
1903
22 days
1904
40 days
1905
24 days
1906
20 days
1907
18 days
1927
20 days
1928
22 days
1929
16 days
1930
31 days
1931
20 days
1932
20 days
1933
30 days
1934
23 days
1935
18 days
1936
23 days
1937
33 days
1938
22 days
1939
36 days
1940
25 days
1941
20 days
1942
30 days
1943
28 days
1944
27 days
1945
27 days
1946
23 days
1947
28 days
1948
30 days
1949
49 days
1950
38 days
1951
17 days
1952
27 days
1953
23 days
1954
22 days
1955
28 days
1956
54 days
1957
24 days
1958
35 days
1959
29 days
1960
15 days
1961
22 days
1962
32 days
1963
20 days
1964
29 days
1965
21 days
1966
19 days
1967
17 days
1968
20 days
1969
18 days
1970
23 days
1971
19 days
1972
29 days
1973
14 days
1974
20 days
1975
24 days
1976
34 days
1977
17 days
1978
32 days
1979
36 days
1980
28 days
1981
20 days
1982
20 days
1983
26 days
1984
16 days
1985
19 days
1986
27 days
1987
27 days
1988
26 days
1989
18 days
2010
22 days
2011
17 days
2012
21 days
2013
22 days
2014
17 days
2015
19 days
2016
28 days
2017
20 days
2018
17 days
2019
15 days
2020
21 days
2021
25 days
2022
19 days
2023
24 days
2024
27 days
2025
13 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
39 years with a frost
Across 39 years with a frost, the median last spring frost at Monroe City falls on 18 April and the median first autumn frost on 16 October, which leaves a median of 181 days between them.
Fitted over all years, the growing season changes by +1.1 days per decade at this station.
Frost dates and growing season at Monroe City
Measure
Median, all years
Earliest period
Recent period (1968 to 2023)
Recent against earliest
Fitted trend
Last spring frost
18 April
n/a
16 April
n/a
-0.5 days per decade
First autumn frost
16 October
n/a
16 October
n/a
+0.5 days per decade
Growing days
181 days
n/a
183 days
n/a
+1.1 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
78 years, 1902 to 2024
A day with at least 69.0 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 128.4 mm (5.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Monroe City: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
69.0 mm (2.7 in)
5 years
87.8 mm (3.5 in)
10 years
98.9 mm (3.9 in)
25 years
111.8 mm (4.4 in)
50 years
120.5 mm (4.7 in)
100 years
128.4 mm (5.1 in)
Longer than the 78 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, 78 years of values from 1902 to 2024.
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: 121.9 mm (4.8 in) in 2014; 114.6 mm (4.5 in) in 1931; 110.5 mm (4.4 in) in 1973.
Climate Twins
1985 to 2023 against 1961 to 1990
Over 1985 to 2023, Monroe City had a mean temperature of 12.1 C (53.8 F) and 932.1 mm (36.7 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are St Charles Elm Pt (United States, 139 km away), Carlinville (United States, 164 km away) and Brunswick (United States, 123 km away).
Climate twins of Monroe City: stations whose 1961 to 1990 climate is closest to its 1985 to 2023 climate
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 Monroe City standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Monroe City 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.