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, July 2022

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
July 2022
1-Month		2.78"
(70.61mm)		2.78"
(70.61mm)		0.00"
(0.00mm)		60th Driest
Driest since:
1930
69th Wettest
Wettest since:
1950, 1958
Ties: 1956
Jun–Jul 2022
2-Month		5.13"
(130.30mm)		5.70"
(144.78mm)		-0.57"
(-14.48mm)		23rd Driest
Driest since:
1930
106th Wettest
Wettest since:
1928
May–Jul 2022
3-Month		8.32"
(211.33mm)		8.62"
(218.95mm)		-0.30"
(-7.62mm)		39th Driest
Driest since:
1988
90th Wettest
Wettest since:
2015
Ties: 1944
Apr–Jul 2022
4-Month		10.92"
(277.37mm)		11.13"
(282.70mm)		-0.21"
(-5.33mm)		50th Driest
Driest since:
1934
79th Wettest
Wettest since:
2015
Mar–Jul 2022
5-Month		13.20"
(335.28mm)		13.64"
(346.46mm)		-0.44"
(-11.18mm)		42nd Driest
Driest since:
1936
87th Wettest
Wettest since:
1973
Feb–Jul 2022
6-Month		14.96"
(379.98mm)		15.78"
(400.81mm)		-0.82"
(-20.83mm)		32nd Driest
Driest since:
1934
97th Wettest
Wettest since:
2019
Jan–Jul 2022
7-Month		16.60"
(421.64mm)		18.09"
(459.49mm)		-1.49"
(-37.85mm)		22nd Driest
Driest since:
1934
107th Wettest
Wettest since:
2019
Dec 2021–Jul 2022
8-Month		19.00"
(482.60mm)		20.44"
(519.18mm)		-1.44"
(-36.58mm)		26th Driest
Driest since:
1931
102nd Wettest
Wettest since:
2019
Nov 2021–Jul 2022
9-Month		20.30"
(515.62mm)		22.66"
(575.56mm)		-2.36"
(-59.94mm)		15th Driest
Driest since:
1934
113th Wettest
Wettest since:
2019
Oct 2021–Jul 2022
10-Month		23.45"
(595.63mm)		24.83"
(630.68mm)		-1.38"
(-35.05mm)		32nd Driest
Driest since:
1934
96th Wettest
Wettest since:
2019
Sep 2021–Jul 2022
11-Month		25.84"
(656.34mm)		27.33"
(694.18mm)		-1.49"
(-37.84mm)		29th Driest
Driest since:
1934
99th Wettest
Wettest since:
2019
Aug 2021–Jul 2022
12-Month		28.98"
(736.09mm)		29.95"
(760.73mm)		-0.97"
(-24.64mm)		38th Driest
Driest since:
1918
90th Wettest
Wettest since:
2019
Ties: 1913
Feb 2021–Jul 2022
18-Month		44.93"
(1,141.22mm)		45.74"
(1,161.80mm)		-0.81"
(-20.58mm)		43rd Driest
Driest since:
1931
85th Wettest
Wettest since:
2019
Aug 2020–Jul 2022
24-Month		58.05"
(1,474.47mm)		59.92"
(1,521.97mm)		-1.87"
(-47.50mm)		34th Driest
Driest since:
1918
93rd Wettest
Wettest since:
2020
Aug 2019–Jul 2022
36-Month		90.33"
(2,294.38mm)		89.88"
(2,282.95mm)		0.45"
(11.43mm)		65th Driest
Driest since:
1956
61st Wettest
Wettest since:
2019
Aug 2018–Jul 2022
48-Month		128.16"
(3,255.26mm)		119.78"
(3,042.41mm)		8.38"
(212.85mm)		114th Driest
Driest since:
1956
11th Wettest
Wettest since:
2019
Aug 2017–Jul 2022
60-Month		158.37"
(4,022.60mm)		149.64"
(3,800.86mm)		8.73"
(221.74mm)		109th Driest
Driest since:
1934
15th Wettest
Wettest since:
2019

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