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 2022

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
December 2022
1-Month 		2.79"
(70.87mm)		 2.35"
(59.69mm)		 0.44"
(11.18mm)		 100th Driest
Driest since:
 1930
29th Wettest
Wettest since:
 2015
Ties: 1936, 1992
Nov–Dec 2022
2-Month 		5.23"
(132.84mm)		 4.58"
(116.33mm)		 0.65"
(16.51mm)		 101st Driest
Driest since:
 1976
28th Wettest
Wettest since:
 2015
Ties: 1971
Oct–Dec 2022
3-Month 		6.91"
(175.51mm)		 6.74"
(171.20mm)		 0.17"
(4.31mm)		 69th Driest
Driest since:
 1917
60th Wettest
Wettest since:
 2015
Sep–Dec 2022
4-Month 		8.76"
(222.50mm)		 9.23"
(234.44mm)		 -0.47"
(-11.94mm)		 43rd Driest
Driest since:
 1939
86th Wettest
Wettest since:
 2018
Ties: 1987
Aug–Dec 2022
5-Month 		11.84"
(300.74mm)		 11.85"
(300.99mm)		 -0.01"
(-0.25mm)		 60th Driest
Driest since:
 1917
69th Wettest
Wettest since:
 2018
Ties: 1969
Jul–Dec 2022
6-Month 		14.62"
(371.35mm)		 14.62"
(371.35mm)		 0.00"
(0.00mm)		 55th Driest
Driest since:
 1917
74th Wettest
Wettest since:
 2018
Jun–Dec 2022
7-Month 		16.97"
(431.04mm)		 17.55"
(445.77mm)		 -0.58"
(-14.73mm)		 41st Driest
Driest since:
 1917
88th Wettest
Wettest since:
 2018
May–Dec 2022
8-Month 		20.15"
(511.81mm)		 20.46"
(519.68mm)		 -0.31"
(-7.87mm)		 48th Driest
Driest since:
 1917
81st Wettest
Wettest since:
 2015
Ties: 1964
Apr–Dec 2022
9-Month 		22.75"
(577.85mm)		 22.98"
(583.69mm)		 -0.23"
(-5.84mm)		 47th Driest
Driest since:
 1956
82nd Wettest
Wettest since:
 2015
Mar–Dec 2022
10-Month 		25.03"
(635.76mm)		 25.49"
(647.45mm)		 -0.46"
(-11.69mm)		 44th Driest
Driest since:
 1956
85th Wettest
Wettest since:
 2015
Feb–Dec 2022
11-Month 		26.79"
(680.47mm)		 27.62"
(701.55mm)		 -0.83"
(-21.08mm)		 35th Driest
Driest since:
 1910
94th Wettest
Wettest since:
 2018
Jan–Dec 2022
12-Month 		28.43"
(722.12mm)		 29.94"
(760.48mm)		 -1.51"
(-38.36mm)		 27th Driest
Driest since:
 1910
102nd Wettest
Wettest since:
 1973
Jul 2021–Dec 2022
18-Month 		44.22"
(1,123.19mm)		 44.58"
(1,132.33mm)		 -0.36"
(-9.14mm)		 49th Driest
Driest since:
 1954
79th Wettest
Wettest since:
 2019
Jan 2021–Dec 2022
24-Month 		58.85"
(1,494.79mm)		 59.90"
(1,521.46mm)		 -1.05"
(-26.67mm)		 45th Driest
Driest since:
 1931
83rd Wettest
Wettest since:
 2019
Jan 2020–Dec 2022
36-Month 		89.23"
(2,266.44mm)		 89.86"
(2,282.44mm)		 -0.63"
(-16.00mm)		 54th Driest
Driest since:
 1956
73rd Wettest
Wettest since:
 2019
Jan 2019–Dec 2022
48-Month 		124.05"
(3,150.87mm)		 119.78"
(3,042.41mm)		 4.27"
(108.46mm)		 95th Driest
Driest since:
 1956
31st Wettest
Wettest since:
 2019
Jan 2018–Dec 2022
60-Month 		158.70"
(4,030.98mm)		 149.68"
(3,801.87mm)		 9.02"
(229.11mm)		 109th Driest
Driest since:
 1956
16th Wettest
Wettest since:
 2019

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