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, January 2019

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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
January 2019
1-Month 		2.56"
(65.02mm)		 2.31"
(58.67mm)		 0.25"
(6.35mm)		 95th Driest
Driest since:
 1981
34th Wettest
Wettest since:
 1916
Dec 2018–Jan 2019
2-Month 		5.81"
(147.57mm)		 4.66"
(118.36mm)		 1.15"
(29.21mm)		 115th Driest
Driest since:
 1981
13th Wettest
Wettest since:
 1932
Nov 2018–Jan 2019
3-Month 		8.52"
(216.41mm)		 6.89"
(175.01mm)		 1.63"
(41.40mm)		 116th Driest
Driest since:
 1977
12th Wettest
Wettest since:
 2016
Ties: 1916
Oct 2018–Jan 2019
4-Month 		11.95"
(303.53mm)		 9.06"
(230.12mm)		 2.89"
(73.41mm)		 126th Driest
Driest since:
 1981
2nd Wettest
Wettest since:
 2016
Sep 2018–Jan 2019
5-Month 		15.52"
(394.21mm)		 11.55"
(293.37mm)		 3.97"
(100.84mm)		 127th Driest
Driest since:
 1940
1st Wettest
Wettest to Date
 2019
Aug 2018–Jan 2019
6-Month 		18.50"
(469.90mm)		 14.17"
(359.92mm)		 4.33"
(109.98mm)		 127th Driest
Driest since:
 1940
1st Wettest
Wettest to Date
 2019
Jul 2018–Jan 2019
7-Month 		21.36"
(542.54mm)		 16.96"
(430.78mm)		 4.40"
(111.76mm)		 127th Driest
Driest since:
 1940
1st Wettest
Wettest to Date
 2019
Jun 2018–Jan 2019
8-Month 		24.51"
(622.55mm)		 19.88"
(504.95mm)		 4.63"
(117.60mm)		 127th Driest
Driest since:
 1981
1st Wettest
Wettest to Date
 2019
May 2018–Jan 2019
9-Month 		27.53"
(699.26mm)		 22.79"
(578.87mm)		 4.74"
(120.39mm)		 126th Driest
Driest since:
 1918
2nd Wettest
Wettest since:
 2016
Apr 2018–Jan 2019
10-Month 		29.99"
(761.75mm)		 25.32"
(643.13mm)		 4.67"
(118.62mm)		 126th Driest
Driest since:
 1940
2nd Wettest
Wettest since:
 2016
Mar 2018–Jan 2019
11-Month 		32.47"
(824.74mm)		 27.83"
(706.88mm)		 4.64"
(117.86mm)		 125th Driest
Driest since:
 1957
3rd Wettest
Wettest since:
 1974
Feb 2018–Jan 2019
12-Month 		35.36"
(898.14mm)		 29.96"
(760.98mm)		 5.40"
(137.16mm)		 126th Driest
Driest since:
 1931
2nd Wettest
Wettest since:
 1974
Aug 2017–Jan 2019
18-Month 		48.71"
(1,237.23mm)		 44.14"
(1,121.16mm)		 4.57"
(116.07mm)		 119th Driest
Driest since:
 1955
8th Wettest
Wettest since:
 2020
Feb 2017–Jan 2019
24-Month 		66.28"
(1,683.51mm)		 59.93"
(1,522.22mm)		 6.35"
(161.29mm)		 122nd Driest
Driest since:
 1918
5th Wettest
Wettest since:
 2020
Feb 2016–Jan 2019
36-Month 		98.90"
(2,512.06mm)		 89.86"
(2,282.44mm)		 9.04"
(229.62mm)		 121st Driest
Driest since:
 1957
5th Wettest
Wettest since:
 2020
Feb 2015–Jan 2019
48-Month 		133.70"
(3,395.98mm)		 119.76"
(3,041.90mm)		 13.94"
(354.08mm)		 123rd Driest
Driest since:
 1957
2nd Wettest
Wettest to Date
 2020
Feb 2014–Jan 2019
60-Month 		165.01"
(4,191.25mm)		 149.63"
(3,800.60mm)		 15.38"
(390.65mm)		 122nd Driest
Driest since:
 1957
2nd Wettest
Wettest to Date
 2020

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