National Rankings

National Data Info
Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Contiguous U.S.

Precipitation Rankings, December 1937

View Period (Months):
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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 1937
1-Month
2.43"
(61.72mm)
2.35"
(59.69mm)
0.08"
(2.03mm)
67th Driest
Driest since:
1930
61st Wettest
Wettest since:
2015
Nov–Dec 1937
2-Month
4.59"
(116.59mm)
4.58"
(116.33mm)
0.01"
(0.26mm)
60th Driest
Driest since:
1976
68th Wettest
Wettest since:
2015
Oct–Dec 1937
3-Month
7.20"
(182.88mm)
6.74"
(171.20mm)
0.46"
(11.68mm)
82nd Driest
Driest since:
1917
46th Wettest
Wettest since:
2015
Sep–Dec 1937
4-Month
9.20"
(233.68mm)
9.23"
(234.44mm)
-0.03"
(-0.76mm)
53rd Driest
Driest since:
1939
75th Wettest
Wettest since:
2018
Aug–Dec 1937
5-Month
11.75"
(298.45mm)
11.85"
(300.99mm)
-0.10"
(-2.54mm)
54th Driest
Driest since:
1917
74th Wettest
Wettest since:
2018
Ties: 1925
Jul–Dec 1937
6-Month
14.37"
(365.00mm)
14.62"
(371.35mm)
-0.25"
(-6.35mm)
49th Driest
Driest since:
1917
79th Wettest
Wettest since:
2018
Ties: 1988
Jun–Dec 1937
7-Month
17.48"
(443.99mm)
17.55"
(445.77mm)
-0.07"
(-1.78mm)
54th Driest
Driest since:
1917
74th Wettest
Wettest since:
2018
May–Dec 1937
8-Month
19.81"
(503.17mm)
20.46"
(519.68mm)
-0.65"
(-16.51mm)
41st Driest
Driest since:
1917
87th Wettest
Wettest since:
2015
Apr–Dec 1937
9-Month
22.49"
(571.25mm)
22.98"
(583.69mm)
-0.49"
(-12.44mm)
44th Driest
Driest since:
1956
84th Wettest
Wettest since:
2015
Mar–Dec 1937
10-Month
24.64"
(625.86mm)
25.49"
(647.45mm)
-0.85"
(-21.59mm)
36th Driest
Driest since:
1956
92nd Wettest
Wettest since:
2015
Feb–Dec 1937
11-Month
26.86"
(682.24mm)
27.62"
(701.55mm)
-0.76"
(-19.31mm)
36th Driest
Driest since:
1910
92nd Wettest
Wettest since:
2018
Jan–Dec 1937
12-Month
30.51"
(774.95mm)
29.94"
(760.48mm)
0.57"
(14.47mm)
74th Driest
Driest since:
1910
54th Wettest
Wettest since:
1973
Ties: 2003
Jul 1936–Dec 1937
18-Month
44.03"
(1,118.36mm)
44.58"
(1,132.33mm)
-0.55"
(-13.97mm)
43rd Driest
Driest since:
1954
84th Wettest
Wettest since:
2019
Ties: 1922
Jan 1936–Dec 1937
24-Month
57.79"
(1,467.87mm)
59.90"
(1,521.46mm)
-2.11"
(-53.59mm)
31st Driest
Driest since:
1931
96th Wettest
Wettest since:
2019
Jan 1935–Dec 1937
36-Month
87.27"
(2,216.66mm)
89.86"
(2,282.44mm)
-2.59"
(-65.78mm)
34th Driest
Driest since:
1956
92nd Wettest
Wettest since:
2019
Jan 1934–Dec 1937
48-Month
113.06"
(2,871.72mm)
119.78"
(3,042.41mm)
-6.72"
(-170.69mm)
8th Driest
Driest since:
1956
117th Wettest
Wettest since:
2019
Jan 1933–Dec 1937
60-Month
140.56"
(3,570.22mm)
149.68"
(3,801.87mm)
-9.12"
(-231.65mm)
5th Driest
Driest since:
1956
119th Wettest
Wettest since:
2019

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