Climate at a Glance

Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of May 2020. For more information, please see Climatological Rankings.


Iowa

Average Temperature Rankings, December 1940

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
December 1940
1-Month
26.4°F
(-3.1°C)
22.7°F
(-5.2°C)
3.7°F
(2.1°C)
90th Coolest Coolest since: 1938 1983
36th Warmest Warmest since: 1939 2015
Ties: 1921, 1956
Nov–Dec 1940
2-Month
29.0°F
(-1.7°C)
29.2°F
(-1.6°C)
-0.2°F
(-0.1°C)
54th Coolest Coolest since: 1937 1985
72nd Warmest Warmest since: 1939 2001
Ties: 1902, 1958, 2018
Oct–Dec 1940
3-Month
38.2°F
(3.4°C)
36.6°F
(2.6°C)
1.6°F
(0.8°C)
84th Coolest Coolest since: 1937 1985
42nd Warmest Warmest since: 1939 1931
Sep–Dec 1940
4-Month
44.8°F
(7.1°C)
43.2°F
(6.2°C)
1.6°F
(0.9°C)
96th Coolest Coolest since: 1937 1985
30th Warmest Warmest since: 1939 1931
Ties: 1930, 1979, 2005
Aug–Dec 1940
5-Month
49.8°F
(9.9°C)
48.8°F
(9.3°C)
1.0°F
(0.6°C)
85th Coolest Coolest since: 1937 1985
41st Warmest Warmest since: 1939 1931
Ties: 1920, 1921, 1973, 2012
Jul–Dec 1940
6-Month
54.2°F
(12.3°C)
53.0°F
(11.7°C)
1.2°F
(0.6°C)
98th Coolest Coolest since: 1937 1985
28th Warmest Warmest since: 1939 1931
Ties: 1948, 1949, 1956, 1980, 2005
Jun–Dec 1940
7-Month
56.5°F
(13.6°C)
55.3°F
(12.9°C)
1.2°F
(0.7°C)
91st Coolest Coolest since: 1937 1985
35th Warmest Warmest since: 1939 1931
Ties: 1975
May–Dec 1940
8-Month
56.7°F
(13.7°C)
55.9°F
(13.3°C)
0.8°F
(0.4°C)
85th Coolest Coolest since: 1937 1917
41st Warmest Warmest since: 1939 1931
Ties: 2010
Apr–Dec 1940
9-Month
55.5°F
(13.1°C)
55.0°F
(12.8°C)
0.5°F
(0.3°C)
77th Coolest Coolest since: 1937 1917
49th Warmest Warmest since: 1939 1931
Ties: 1912, 1970, 1986
Mar–Dec 1940
10-Month
53.0°F
(11.7°C)
53.0°F
(11.7°C)
0.0°F
(0.0°C)
69th Coolest Coolest since: 1937 1951
57th Warmest Warmest since: 1939 2012
Ties: 1942, 1959, 1964, 1970, 2000
Feb–Dec 1940
11-Month
50.3°F
(10.2°C)
50.3°F
(10.2°C)
0.0°F
(0.0°C)
68th Coolest Coolest since: 1937 1917
58th Warmest Warmest since: 1939 2012
Ties: 1901, 1925, 1968, 1970
Jan–Dec 1940
12-Month
46.6°F
(8.1°C)
47.5°F
(8.6°C)
-0.9°F
(-0.5°C)
31st Coolest Coolest since: 1937 1917
95th Warmest Warmest since: 1939 2012
Ties: 1897, 1902, 1967, 1989
Jul 1939–Dec 1940
18-Month
49.7°F
(9.8°C)
49.4°F
(9.7°C)
0.3°F
(0.1°C)
76th Coolest Coolest since: 1937 1951
49th Warmest Warmest since: 1939 2012
Ties: 1935, 1976, 2001
Jan 1939–Dec 1940
24-Month
48.2°F
(9.0°C)
47.5°F
(8.6°C)
0.7°F
(0.4°C)
90th Coolest Coolest since: 1938 1951
35th Warmest Warmest since: 1939 1931
Ties: 1901, 1938, 1941, 1974, 1992, 2004
Jan 1938–Dec 1940
36-Month
48.8°F
(9.3°C)
47.5°F
(8.6°C)
1.3°F
(0.7°C)
106th Coolest Coolest since: 1939 1952
18th Warmest Warmest since: 1935 2017
Ties: 1941, 1955, 1989
Jan 1937–Dec 1940
48-Month
48.2°F
(9.0°C)
47.5°F
(8.6°C)
0.7°F
(0.4°C)
88th Coolest Coolest since: 1938 1905
35th Warmest Warmest since: 1939 1934
Ties: 1924, 1957, 1999
Jan 1936–Dec 1940
60-Month
48.0°F
(8.9°C)
47.5°F
(8.6°C)
0.5°F
(0.3°C)
80th Coolest Coolest since: 1930 1907
42nd Warmest Warmest since: 1939 1934, 2002
Ties: 1924, 1999, 2010

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published June 2020, retrieved on July 6, 2020 from https://www.ncdc.noaa.gov/cag/