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 August 2022. For more information, please see Climatological Rankings.


Iowa

Precipitation Rankings, December 1940

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
December 1940
1-Month
1.36"
(34.54mm)
1.11"
(28.19mm)
0.25"
(6.35mm)
86th Driest Driest since: 1939 2002
42nd Wettest Wettest since: 1936 2015
Ties: 1925
Nov–Dec 1940
2-Month
3.87"
(98.30mm)
2.87"
(72.90mm)
1.00"
(25.40mm)
102nd Driest Driest since: 1939 1976
26th Wettest Wettest since: 1934 2015
Oct–Dec 1940
3-Month
6.19"
(157.23mm)
5.16"
(131.06mm)
1.03"
(26.17mm)
90th Driest Driest since: 1939 1910
38th Wettest Wettest since: 1935 1931
Sep–Dec 1940
4-Month
7.06"
(179.32mm)
8.83"
(224.28mm)
-1.77"
(-44.96mm)
38th Driest Driest since: 1939 1939, 1976
90th Wettest Wettest since: 1938 1931
Ties: 1995
Aug–Dec 1940
5-Month
13.48"
(342.39mm)
12.67"
(321.82mm)
0.81"
(20.57mm)
77th Driest Driest since: 1939 1976
51st Wettest Wettest since: 1938 2018
Jul–Dec 1940
6-Month
18.05"
(458.47mm)
16.52"
(419.61mm)
1.53"
(38.86mm)
85th Driest Driest since: 1939 1976
43rd Wettest Wettest since: 1938 2018
Jun–Dec 1940
7-Month
21.72"
(551.69mm)
21.15"
(537.21mm)
0.57"
(14.48mm)
71st Driest Driest since: 1939 1976
57th Wettest Wettest since: 1938 2018
May–Dec 1940
8-Month
23.74"
(603.00mm)
25.20"
(640.08mm)
-1.46"
(-37.08mm)
51st Driest Driest since: 1939 1976
77th Wettest Wettest since: 1938 1993
Apr–Dec 1940
9-Month
26.89"
(683.01mm)
28.15"
(715.01mm)
-1.26"
(-32.00mm)
51st Driest Driest since: 1939 1910
77th Wettest Wettest since: 1938 1993
Mar–Dec 1940
10-Month
28.59"
(726.19mm)
30.10"
(764.54mm)
-1.51"
(-38.35mm)
50th Driest Driest since: 1939 1910
78th Wettest Wettest since: 1938 1993
Feb–Dec 1940
11-Month
29.70"
(754.38mm)
31.12"
(790.45mm)
-1.42"
(-36.07mm)
48th Driest Driest since: 1939 1910
80th Wettest Wettest since: 1938 1993
Jan–Dec 1940
12-Month
30.51"
(774.95mm)
32.09"
(815.09mm)
-1.58"
(-40.14mm)
48th Driest Driest since: 1939 1910
80th Wettest Wettest since: 1938 1993
Jul 1939–Dec 1940
18-Month
41.79"
(1,061.47mm)
48.69"
(1,236.73mm)
-6.90"
(-175.26mm)
17th Driest Driest since: 1936 1956
110th Wettest Wettest since: 1939 1993
Jan 1939–Dec 1940
24-Month
55.01"
(1,397.25mm)
64.24"
(1,631.70mm)
-9.23"
(-234.45mm)
8th Driest Driest since: 1937 1989
119th Wettest Wettest since: 1939 2019
Jan 1938–Dec 1940
36-Month
91.33"
(2,319.78mm)
96.36"
(2,447.54mm)
-5.03"
(-127.76mm)
36th Driest Driest since: 1939 1957
90th Wettest Wettest since: 1932 2010
Jan 1937–Dec 1940
48-Month
118.83"
(3,018.28mm)
128.37"
(3,260.60mm)
-9.54"
(-242.32mm)
15th Driest Driest since: 1939 1958
110th Wettest Wettest since: 1938 2010
Jan 1936–Dec 1940
60-Month
144.37"
(3,667.00mm)
160.36"
(4,073.14mm)
-15.99"
(-406.14mm)
9th Driest Driest since: 1937 1956
115th Wettest Wettest since: 1939 2010

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, Precipitation, published September 2022, retrieved on September 26, 2022 from https://www.ncdc.noaa.gov/cag/