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, June 2020

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
June 2020
1-Month 		2.73"
(69.34mm)		 2.93"
(74.42mm)		 -0.20"
(-5.08mm)		 40th Driest
Driest since:
 1933
89th Wettest
Wettest since:
 1928
May–Jun 2020
2-Month 		5.82"
(147.83mm)		 5.84"
(148.34mm)		 -0.02"
(-0.51mm)		 59th Driest
Driest since:
 1988
70th Wettest
Wettest since:
 2015
Ties: 1959
Apr–Jun 2020
3-Month 		8.34"
(211.84mm)		 8.35"
(212.09mm)		 -0.01"
(-0.25mm)		 65th Driest
Driest since:
 1988
64th Wettest
Wettest since:
 1957
Mar–Jun 2020
4-Month 		11.20"
(284.48mm)		 10.86"
(275.84mm)		 0.34"
(8.64mm)		 77th Driest
Driest since:
 1988
52nd Wettest
Wettest since:
 1957
Feb–Jun 2020
5-Month 		13.65"
(346.71mm)		 13.00"
(330.20mm)		 0.65"
(16.51mm)		 86th Driest
Driest since:
 1988
43rd Wettest
Wettest since:
 2019
Jan–Jun 2020
6-Month 		16.41"
(416.81mm)		 15.31"
(388.87mm)		 1.10"
(27.94mm)		 105th Driest
Driest since:
 1988
24th Wettest
Wettest since:
 2019
Dec 2019–Jun 2020
7-Month 		18.98"
(482.09mm)		 17.66"
(448.56mm)		 1.32"
(33.53mm)		 104th Driest
Driest since:
 1931
24th Wettest
Wettest since:
 2019
Nov 2019–Jun 2020
8-Month 		20.92"
(531.37mm)		 19.89"
(505.21mm)		 1.03"
(26.16mm)		 93rd Driest
Driest since:
 1934
35th Wettest
Wettest since:
 2019
Oct 2019–Jun 2020
9-Month 		24.11"
(612.39mm)		 22.05"
(560.07mm)		 2.06"
(52.32mm)		 110th Driest
Driest since:
 1934
18th Wettest
Wettest since:
 2019
Sep 2019–Jun 2020
10-Month 		26.56"
(674.62mm)		 24.55"
(623.57mm)		 2.01"
(51.05mm)		 107th Driest
Driest since:
 1934
21st Wettest
Wettest since:
 2019
Aug 2019–Jun 2020
11-Month 		29.34"
(745.24mm)		 27.17"
(690.12mm)		 2.17"
(55.12mm)		 105th Driest
Driest since:
 1918
23rd Wettest
Wettest since:
 2019
Jul 2019–Jun 2020
12-Month 		32.10"
(815.34mm)		 29.96"
(760.98mm)		 2.14"
(54.36mm)		 105th Driest
Driest since:
 1931
23rd Wettest
Wettest since:
 2019
Jan 2019–Jun 2020
18-Month 		51.23"
(1,301.24mm)		 45.27"
(1,149.86mm)		 5.96"
(151.38mm)		 125th Driest
Driest since:
 1931
3rd Wettest
Wettest since:
 2019
Jul 2018–Jun 2020
24-Month 		70.03"
(1,778.76mm)		 59.93"
(1,522.22mm)		 10.10"
(256.54mm)		 126th Driest
Driest since:
 1931
1st Wettest
Wettest to Date
 2020
Jul 2017–Jun 2020
36-Month 		100.18"
(2,544.57mm)		 89.89"
(2,283.21mm)		 10.29"
(261.36mm)		 123rd Driest
Driest since:
 1956
3rd Wettest
Wettest since:
 2019
Jul 2016–Jun 2020
48-Month 		134.17"
(3,407.92mm)		 119.79"
(3,042.67mm)		 14.38"
(365.25mm)		 123rd Driest
Driest since:
 1956
2nd Wettest
Wettest since:
 2019
Jul 2015–Jun 2020
60-Month 		167.68"
(4,259.07mm)		 149.66"
(3,801.36mm)		 18.02"
(457.71mm)		 123rd Driest
Driest since:
 1934
1st Wettest
Wettest to Date
 2020

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