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 2010

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
December 2010
1-Month
2.45"
(62.23mm)
2.35"
(59.69mm)
0.10"
(2.54mm)
69th Driest
Driest since:
1930
60th Wettest
Wettest since:
2015
Ties: 1952
Nov–Dec 2010
2-Month
4.67"
(118.62mm)
4.58"
(116.33mm)
0.09"
(2.29mm)
69th Driest
Driest since:
1976
60th Wettest
Wettest since:
2015
Ties: 1967
Oct–Dec 2010
3-Month
6.64"
(168.66mm)
6.74"
(171.20mm)
-0.10"
(-2.54mm)
53rd Driest
Driest since:
1917
76th Wettest
Wettest since:
2015
Sep–Dec 2010
4-Month
9.42"
(239.27mm)
9.23"
(234.44mm)
0.19"
(4.83mm)
66th Driest
Driest since:
1939
63rd Wettest
Wettest since:
2018
Aug–Dec 2010
5-Month
11.93"
(303.02mm)
11.85"
(300.99mm)
0.08"
(2.03mm)
66th Driest
Driest since:
1917
63rd Wettest
Wettest since:
2018
Jul–Dec 2010
6-Month
15.25"
(387.35mm)
14.62"
(371.35mm)
0.63"
(16.00mm)
82nd Driest
Driest since:
1917
47th Wettest
Wettest since:
2018
Jun–Dec 2010
7-Month
18.74"
(476.00mm)
17.55"
(445.77mm)
1.19"
(30.23mm)
95th Driest
Driest since:
1917
34th Wettest
Wettest since:
2018
May–Dec 2010
8-Month
22.06"
(560.32mm)
20.46"
(519.68mm)
1.60"
(40.64mm)
101st Driest
Driest since:
1917
28th Wettest
Wettest since:
2015
Apr–Dec 2010
9-Month
24.44"
(620.78mm)
22.98"
(583.69mm)
1.46"
(37.09mm)
97th Driest
Driest since:
1956
32nd Wettest
Wettest since:
2015
Mar–Dec 2010
10-Month
26.74"
(679.20mm)
25.49"
(647.45mm)
1.25"
(31.75mm)
92nd Driest
Driest since:
1956
37th Wettest
Wettest since:
2015
Ties: 1968
Feb–Dec 2010
11-Month
28.75"
(730.25mm)
27.62"
(701.55mm)
1.13"
(28.70mm)
85th Driest
Driest since:
1910
44th Wettest
Wettest since:
2018
Jan–Dec 2010
12-Month
31.37"
(796.80mm)
29.94"
(760.48mm)
1.43"
(36.32mm)
97th Driest
Driest since:
1910
32nd Wettest
Wettest since:
1973
Jul 2009–Dec 2010
18-Month
48.67"
(1,236.22mm)
44.58"
(1,132.33mm)
4.09"
(103.89mm)
115th Driest
Driest since:
1954
13th Wettest
Wettest since:
2019
Jan 2009–Dec 2010
24-Month
63.67"
(1,617.22mm)
59.90"
(1,521.46mm)
3.77"
(95.76mm)
104th Driest
Driest since:
1931
24th Wettest
Wettest since:
2019
Jan 2008–Dec 2010
36-Month
94.91"
(2,410.71mm)
89.86"
(2,282.44mm)
5.05"
(128.27mm)
106th Driest
Driest since:
1956
21st Wettest
Wettest since:
2019
Jan 2007–Dec 2010
48-Month
124.09"
(3,151.89mm)
119.78"
(3,042.41mm)
4.31"
(109.48mm)
97th Driest
Driest since:
1956
29th Wettest
Wettest since:
2019
Ties: 1947
Jan 2006–Dec 2010
60-Month
153.91"
(3,909.31mm)
149.68"
(3,801.87mm)
4.23"
(107.44mm)
90th Driest
Driest since:
1956
35th Wettest
Wettest since:
2019

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