Climate at a Glance

National 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 December 2021. For more information, please see Climatological Rankings.


Contiguous U.S.

Precipitation Rankings, December 1940

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
December 1940
1-Month
2.84"
(72.14mm)
2.35"
(59.69mm)
0.49"
(12.45mm)
104th Driest Driest since: 1939 1930
24th Wettest Wettest since: 1932 2015
Ties: 2008
Nov–Dec 1940
2-Month
5.75"
(146.05mm)
4.58"
(116.33mm)
1.17"
(29.72mm)
116th Driest Driest since: 1939 1976
12th Wettest Wettest since: 1931 2015
Oct–Dec 1940
3-Month
7.52"
(191.01mm)
6.74"
(171.20mm)
0.78"
(19.81mm)
94th Driest Driest since: 1939 1917
34th Wettest Wettest since: 1931 2015
Ties: 1948, 1981
Sep–Dec 1940
4-Month
9.52"
(241.81mm)
9.23"
(234.44mm)
0.29"
(7.37mm)
73rd Driest Driest since: 1939 1939
55th Wettest Wettest since: 1932 2018
Ties: 1929
Aug–Dec 1940
5-Month
12.49"
(317.25mm)
11.85"
(300.99mm)
0.64"
(16.26mm)
82nd Driest Driest since: 1939 1917
46th Wettest Wettest since: 1931 2018
Ties: 1991
Jul–Dec 1940
6-Month
14.99"
(380.75mm)
14.62"
(371.35mm)
0.37"
(9.40mm)
68th Driest Driest since: 1939 1917
60th Wettest Wettest since: 1932 2018
Jun–Dec 1940
7-Month
17.97"
(456.44mm)
17.55"
(445.77mm)
0.42"
(10.67mm)
68th Driest Driest since: 1939 1917
60th Wettest Wettest since: 1932 2018
May–Dec 1940
8-Month
20.19"
(512.83mm)
20.46"
(519.68mm)
-0.27"
(-6.85mm)
50th Driest Driest since: 1939 1917
78th Wettest Wettest since: 1932 2015
Apr–Dec 1940
9-Month
23.23"
(590.04mm)
22.98"
(583.69mm)
0.25"
(6.35mm)
62nd Driest Driest since: 1939 1956
66th Wettest Wettest since: 1928 2015
Mar–Dec 1940
10-Month
25.50"
(647.70mm)
25.49"
(647.45mm)
0.01"
(0.25mm)
58th Driest Driest since: 1939 1956
70th Wettest Wettest since: 1929 2015
Feb–Dec 1940
11-Month
28.48"
(723.39mm)
27.62"
(701.55mm)
0.86"
(21.84mm)
76th Driest Driest since: 1939 1910
52nd Wettest Wettest since: 1927 2018
Jan–Dec 1940
12-Month
30.41"
(772.41mm)
29.94"
(760.48mm)
0.47"
(11.93mm)
68th Driest Driest since: 1939 1910
60th Wettest Wettest since: 1937 1973
Jul 1939–Dec 1940
18-Month
41.57"
(1,055.88mm)
44.58"
(1,132.33mm)
-3.01"
(-76.45mm)
19th Driest Driest since: 1939 1954
108th Wettest Wettest since: 1938 2019
Jan 1939–Dec 1940
24-Month
56.74"
(1,441.20mm)
59.90"
(1,521.46mm)
-3.16"
(-80.26mm)
20th Driest Driest since: 1939 1931
107th Wettest Wettest since: 1938 2019
Jan 1938–Dec 1940
36-Month
86.48"
(2,196.59mm)
89.86"
(2,282.44mm)
-3.38"
(-85.85mm)
26th Driest Driest since: 1936 1956
100th Wettest Wettest since: 1939 2019
Jan 1937–Dec 1940
48-Month
116.99"
(2,971.55mm)
119.78"
(3,042.41mm)
-2.79"
(-70.86mm)
37th Driest Driest since: 1939 1956
88th Wettest Wettest since: 1938 2019
Jan 1936–Dec 1940
60-Month
144.27"
(3,664.46mm)
149.68"
(3,801.87mm)
-5.41"
(-137.41mm)
18th Driest Driest since: 1939 1956
106th Wettest Wettest since: 1931 2019

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, published January 2022, retrieved on January 20, 2022 from https://www.ncdc.noaa.gov/cag/