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 1909

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  • Record Wettest
PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Wettest/Driest
Since
Record
December 1909
1-Month
2.60"
(66.04mm)
2.35"
(59.69mm)
0.25"
(6.35mm)
82nd Driest
Driest since:
1930
47th Wettest
Wettest since:
2015
Ties: 1901
Nov–Dec 1909
2-Month
5.55"
(140.97mm)
4.58"
(116.33mm)
0.97"
(24.64mm)
113th Driest
Driest since:
1976
16th Wettest
Wettest since:
2015
Ties: 1951
Oct–Dec 1909
3-Month
7.09"
(180.09mm)
6.74"
(171.20mm)
0.35"
(8.89mm)
78th Driest
Driest since:
1917
51st Wettest
Wettest since:
2015
Ties: 2007
Sep–Dec 1909
4-Month
9.37"
(238.00mm)
9.23"
(234.44mm)
0.14"
(3.56mm)
65th Driest
Driest since:
1939
64th Wettest
Wettest since:
2018
Aug–Dec 1909
5-Month
11.78"
(299.21mm)
11.85"
(300.99mm)
-0.07"
(-1.78mm)
58th Driest
Driest since:
1917
71st Wettest
Wettest since:
2018
Jul–Dec 1909
6-Month
14.81"
(376.17mm)
14.62"
(371.35mm)
0.19"
(4.82mm)
63rd Driest
Driest since:
1917
66th Wettest
Wettest since:
2018
Ties: 1913
Jun–Dec 1909
7-Month
18.04"
(458.22mm)
17.55"
(445.77mm)
0.49"
(12.45mm)
72nd Driest
Driest since:
1917
57th Wettest
Wettest since:
2018
May–Dec 1909
8-Month
21.08"
(535.43mm)
20.46"
(519.68mm)
0.62"
(15.75mm)
77th Driest
Driest since:
1917
52nd Wettest
Wettest since:
2015
Apr–Dec 1909
9-Month
23.36"
(593.34mm)
22.98"
(583.69mm)
0.38"
(9.65mm)
67th Driest
Driest since:
1956
62nd Wettest
Wettest since:
2015
Mar–Dec 1909
10-Month
25.57"
(649.48mm)
25.49"
(647.45mm)
0.08"
(2.03mm)
61st Driest
Driest since:
1956
68th Wettest
Wettest since:
2015
Feb–Dec 1909
11-Month
28.45"
(722.63mm)
27.62"
(701.55mm)
0.83"
(21.08mm)
76th Driest
Driest since:
1910
53rd Wettest
Wettest since:
2018
Ties: 2011
Jan–Dec 1909
12-Month
31.19"
(792.23mm)
29.94"
(760.48mm)
1.25"
(31.75mm)
90th Driest
Driest since:
1910
39th Wettest
Wettest since:
1973
Jul 1908–Dec 1909
18-Month
44.34"
(1,126.24mm)
44.58"
(1,132.33mm)
-0.24"
(-6.09mm)
53rd Driest
Driest since:
1954
75th Wettest
Wettest since:
2019
Jan 1908–Dec 1909
24-Month
60.99"
(1,549.15mm)
59.90"
(1,521.46mm)
1.09"
(27.69mm)
78th Driest
Driest since:
1931
50th Wettest
Wettest since:
2019
Ties: 1949
Jan 1907–Dec 1909
36-Month
91.93"
(2,335.02mm)
89.86"
(2,282.44mm)
2.07"
(52.58mm)
86th Driest
Driest since:
1956
41st Wettest
Wettest since:
2019
Jan 1906–Dec 1909
48-Month
124.77"
(3,169.16mm)
119.78"
(3,042.41mm)
4.99"
(126.75mm)
100th Driest
Driest since:
1956
26th Wettest
Wettest since:
2019
Jan 1905–Dec 1909
60-Month
157.37"
(3,997.20mm)
149.68"
(3,801.87mm)
7.69"
(195.33mm)
106th Driest
Driest since:
1956
19th Wettest
Wettest to Date
2019

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