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 April 2021. For more information, please see Climatological Rankings.


Iowa

Average Temperature Rankings, December 1939

View Period (Months):All1234567891011121824364860
Download: xml csv json
  • Record Coolest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
December 1939
1-Month
30.7°F
(-0.7°C)
22.7°F
(-5.2°C)
8.0°F
(4.5°C)
119th Coolest Coolest since: 1938 1983
8th Warmest Warmest since: 1931 2015
Ties: 2001
Nov–Dec 1939
2-Month
34.4°F
(1.3°C)
29.2°F
(-1.6°C)
5.2°F
(2.9°C)
114th Coolest Coolest since: 1938 1985
13th Warmest Warmest since: 1931 2001
Oct–Dec 1939
3-Month
40.3°F
(4.6°C)
36.6°F
(2.6°C)
3.7°F
(2.0°C)
115th Coolest Coolest since: 1938 1985
12th Warmest Warmest since: 1931 1931
Ties: 1913
Sep–Dec 1939
4-Month
47.3°F
(8.5°C)
43.2°F
(6.2°C)
4.1°F
(2.3°C)
121st Coolest Coolest since: 1938 1985
6th Warmest Warmest since: 1931 1931
Aug–Dec 1939
5-Month
51.8°F
(11.0°C)
48.8°F
(9.3°C)
3.0°F
(1.7°C)
118th Coolest Coolest since: 1938 1985
9th Warmest Warmest since: 1938 1931
Ties: 1938, 1953
Jul–Dec 1939
6-Month
55.8°F
(13.2°C)
53.0°F
(11.7°C)
2.8°F
(1.5°C)
118th Coolest Coolest since: 1938 1985
9th Warmest Warmest since: 1938 1931
Ties: 1938
Jun–Dec 1939
7-Month
57.9°F
(14.4°C)
55.3°F
(12.9°C)
2.6°F
(1.5°C)
120th Coolest Coolest since: 1938 1985
7th Warmest Warmest since: 1936 1931
Ties: 1953, 1998
May–Dec 1939
8-Month
58.9°F
(14.9°C)
55.9°F
(13.3°C)
3.0°F
(1.6°C)
123rd Coolest Coolest since: 1938 1917
4th Warmest Warmest since: 1936 1931
Apr–Dec 1939
9-Month
57.5°F
(14.2°C)
55.0°F
(12.8°C)
2.5°F
(1.4°C)
120th Coolest Coolest since: 1938 1917
7th Warmest Warmest since: 1936 1931
Ties: 1936, 2012, 2015
Mar–Dec 1939
10-Month
55.3°F
(12.9°C)
53.0°F
(11.7°C)
2.3°F
(1.2°C)
116th Coolest Coolest since: 1937 1951
11th Warmest Warmest since: 1938 2012
Ties: 1998
Feb–Dec 1939
11-Month
52.0°F
(11.1°C)
50.2°F
(10.1°C)
1.8°F
(1.0°C)
111th Coolest Coolest since: 1937 1917
16th Warmest Warmest since: 1938 2012
Ties: 2006
Jan–Dec 1939
12-Month
49.9°F
(9.9°C)
47.5°F
(8.6°C)
2.4°F
(1.3°C)
116th Coolest Coolest since: 1937 1917
11th Warmest Warmest since: 1938 2012
Jul 1938–Dec 1939
18-Month
51.9°F
(11.1°C)
49.4°F
(9.7°C)
2.5°F
(1.4°C)
121st Coolest Coolest since: 1938 1951
5th Warmest Warmest since: 1931 2012
Ties: 1999
Jan 1938–Dec 1939
24-Month
50.0°F
(10.0°C)
47.6°F
(8.7°C)
2.4°F
(1.3°C)
121st Coolest Coolest since: 1938 1951
5th Warmest Warmest since: 1931 1931
Ties: 1922, 2006, 2016
Jan 1937–Dec 1939
36-Month
48.7°F
(9.3°C)
47.5°F
(8.6°C)
1.2°F
(0.7°C)
103rd Coolest Coolest since: 1938 1952
22nd Warmest Warmest since: 1935 2017
Ties: 1931, 1954, 2003, 2005
Jan 1936–Dec 1939
48-Month
48.4°F
(9.1°C)
47.5°F
(8.6°C)
0.9°F
(0.5°C)
95th Coolest Coolest since: 1938 1905
29th Warmest Warmest since: 1936 1934
Ties: 1921, 1987, 2015, 2020
Jan 1935–Dec 1939
60-Month
48.2°F
(9.0°C)
47.5°F
(8.6°C)
0.7°F
(0.4°C)
89th Coolest Coolest since: 1938 1907
34th Warmest Warmest since: 1938 1934, 2002
Ties: 1938, 1987, 1989, 1992, 2014

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published May 2021, retrieved on May 14, 2021 from https://www.ncdc.noaa.gov/cag/