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 1901

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
July 1901
1-Month		2.32"
(58.93mm)		2.78"
(70.61mm)		-0.46"
(-11.68mm)		12th Driest
Driest to Date
1930
117th Wettest
Wettest since:
1950, 1958
Jun–Jul 1901
2-Month		4.92"
(124.97mm)		5.70"
(144.78mm)		-0.78"
(-19.81mm)		14th Driest
Driest to Date
1930
115th Wettest
Wettest since:
1928
May–Jul 1901
3-Month		7.58"
(192.53mm)		8.62"
(218.95mm)		-1.04"
(-26.42mm)		17th Driest
Driest to Date
1988
112th Wettest
Wettest since:
2015
Apr–Jul 1901
4-Month		10.11"
(256.79mm)		11.13"
(282.70mm)		-1.02"
(-25.91mm)		24th Driest
Driest to Date
1934
105th Wettest
Wettest since:
2015
Mar–Jul 1901
5-Month		12.40"
(314.96mm)		13.64"
(346.46mm)		-1.24"
(-31.50mm)		21st Driest
Driest to Date
1936
108th Wettest
Wettest since:
1973
Feb–Jul 1901
6-Month		14.53"
(369.06mm)		15.78"
(400.81mm)		-1.25"
(-31.75mm)		23rd Driest
Driest since:
1934
106th Wettest
Wettest since:
2019
Jan–Jul 1901
7-Month		16.52"
(419.61mm)		18.09"
(459.49mm)		-1.57"
(-39.88mm)		21st Driest
Driest to Date
1934
108th Wettest
Wettest since:
2019
Dec 1900–Jul 1901
8-Month		18.18"
(461.77mm)		20.44"
(519.18mm)		-2.26"
(-57.41mm)		14th Driest
Driest to Date
1931
114th Wettest
Wettest since:
2019
Nov 1900–Jul 1901
9-Month		20.55"
(521.97mm)		22.66"
(575.56mm)		-2.11"
(-53.59mm)		18th Driest
Driest to Date
1934
110th Wettest
Wettest since:
2019
Ties: 1910
Oct 1900–Jul 1901
10-Month		23.30"
(591.82mm)		24.83"
(630.68mm)		-1.53"
(-38.86mm)		29th Driest
Driest to Date
1934
99th Wettest
Wettest since:
2019
Ties: 1902
Sep 1900–Jul 1901
11-Month		26.23"
(666.24mm)		27.33"
(694.18mm)		-1.10"
(-27.94mm)		36th Driest
Driest since:
1934
92nd Wettest
Wettest since:
2019
Ties: 2001
Aug 1900–Jul 1901
12-Month		28.65"
(727.71mm)		29.95"
(760.73mm)		-1.30"
(-33.02mm)		33rd Driest
Driest since:
1918
95th Wettest
Wettest since:
2019
Feb 1900–Jul 1901
18-Month		45.41"
(1,153.41mm)		45.74"
(1,161.80mm)		-0.33"
(-8.39mm)		52nd Driest
Driest since:
1931
76th Wettest
Wettest since:
2019
Ties: 2003
Aug 1899–Jul 1901
24-Month		57.71"
(1,465.83mm)		59.92"
(1,521.97mm)		-2.21"
(-56.14mm)		28th Driest
Driest to Date
1918
99th Wettest
Wettest since:
2020
Aug 1898–Jul 1901
36-Month		87.73"
(2,228.34mm)		89.88"
(2,282.95mm)		-2.15"
(-54.61mm)		38th Driest
Driest since:
1956
88th Wettest
Wettest since:
2019
Aug 1897–Jul 1901
48-Month		115.98"
(2,945.89mm)		119.78"
(3,042.41mm)		-3.80"
(-96.52mm)		28th Driest
Driest to Date
1956
97th Wettest
Wettest since:
2019
Aug 1896–Jul 1901
60-Month		146.63"
(3,724.40mm)		149.64"
(3,800.86mm)		-3.01"
(-76.46mm)		35th Driest
Driest since:
1934
89th Wettest
Wettest to Date
2019

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