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 November 2019. For more information, please see Climatological Rankings.


Iowa

Average Temperature Rankings, September 1940

View Period (Months):All1234567891011121824364860
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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
September 1940
1-Month
64.9°F
(18.3°C)
63.0°F
(17.2°C)
1.9°F
(1.1°C)
91st Coolest Coolest since: 1937 1896, 1993
35th Warmest Warmest since: 1939 1897, 1931
Ties: 1937, 1971
Aug–Sep 1940
2-Month
67.3°F
(19.6°C)
67.2°F
(19.6°C)
0.1°F
(0.0°C)
68th Coolest Coolest since: 1934 1974, 1992
58th Warmest Warmest since: 1939 1947
Ties: 1926
Jul–Sep 1940
3-Month
70.2°F
(21.2°C)
69.4°F
(20.8°C)
0.8°F
(0.4°C)
88th Coolest Coolest since: 1932 1992
38th Warmest Warmest since: 1939 1936
Ties: 1911
Jun–Sep 1940
4-Month
70.3°F
(21.3°C)
69.3°F
(20.7°C)
1.0°F
(0.6°C)
90th Coolest Coolest since: 1935 1915
36th Warmest Warmest since: 1939 1936
Ties: 1897, 1922, 1978
May–Sep 1940
5-Month
67.8°F
(19.9°C)
67.5°F
(19.7°C)
0.3°F
(0.2°C)
76th Coolest Coolest since: 1935 1915
50th Warmest Warmest since: 1939 1936
Ties: 1897, 2011, 2013, 2017, 2019
Apr–Sep 1940
6-Month
64.2°F
(17.9°C)
64.2°F
(17.9°C)
0.0°F
(0.0°C)
59th Coolest Coolest since: 1935 1907
67th Warmest Warmest since: 1939 1936
Ties: 1899, 1923, 1971, 1990
Mar–Sep 1940
7-Month
59.4°F
(15.2°C)
60.0°F
(15.6°C)
-0.6°F
(-0.4°C)
44th Coolest Coolest since: 1928 1951
82nd Warmest Warmest since: 1939 2012
Ties: 1906
Feb–Sep 1940
8-Month
54.8°F
(12.7°C)
55.3°F
(12.9°C)
-0.5°F
(-0.2°C)
42nd Coolest Coolest since: 1929 1950
84th Warmest Warmest since: 1939 2012
Ties: 1906, 1928, 1944, 1997
Jan–Sep 1940
9-Month
49.4°F
(9.7°C)
51.1°F
(10.6°C)
-1.7°F
(-0.9°C)
18th Coolest Coolest since: 1929 1912
108th Warmest Warmest since: 1939 2012
Ties: 1905
Dec 1939–Sep 1940
10-Month
47.6°F
(8.7°C)
48.4°F
(9.1°C)
-0.8°F
(-0.4°C)
38th Coolest Coolest since: 1929 1979
87th Warmest Warmest since: 1939 2012
Ties: 1916, 1956, 1959, 1961, 1970
Nov 1939–Sep 1940
11-Month
46.7°F
(8.2°C)
47.2°F
(8.4°C)
-0.5°F
(-0.2°C)
43rd Coolest Coolest since: 1937 1912
82nd Warmest Warmest since: 1939 2012
Ties: 1937, 1952, 1958, 1961, 1986
Oct 1939–Sep 1940
12-Month
47.2°F
(8.4°C)
47.6°F
(8.7°C)
-0.4°F
(-0.3°C)
49th Coolest Coolest since: 1937 1912
76th Warmest Warmest since: 1939 2012
Ties: 1896, 1909, 1910
Apr 1939–Sep 1940
18-Month
53.5°F
(11.9°C)
53.1°F
(11.7°C)
0.4°F
(0.2°C)
79th Coolest Coolest since: 1936 1951
46th Warmest Warmest since: 1939 2012
Ties: 1913, 2004
Oct 1938–Sep 1940
24-Month
48.4°F
(9.1°C)
47.5°F
(8.6°C)
0.9°F
(0.5°C)
93rd Coolest Coolest since: 1938 1979
31st Warmest Warmest since: 1939 2017
Ties: 1964, 1992
Oct 1937–Sep 1940
36-Month
48.5°F
(9.2°C)
47.5°F
(8.6°C)
1.0°F
(0.6°C)
99th Coolest Coolest since: 1939 1979
24th Warmest Warmest since: 1935 2000
Ties: 1956, 1987, 2019
Oct 1936–Sep 1940
48-Month
48.1°F
(8.9°C)
47.5°F
(8.6°C)
0.6°F
(0.3°C)
88th Coolest Coolest since: 1939 1905, 1918
34th Warmest Warmest since: 1936 1934
Ties: 1921, 1931, 1944, 1983, 1992
Oct 1935–Sep 1940
60-Month
47.8°F
(8.8°C)
47.5°F
(8.6°C)
0.3°F
(0.2°C)
74th Coolest Coolest since: 1930 1906, 1907
47th Warmest Warmest since: 1939 2002
Ties: 1924, 1955, 1976, 1977

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published December 2019, retrieved on December 12, 2019 from https://www.ncdc.noaa.gov/cag/