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 1964

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
July 1964
1-Month		2.61"
(66.29mm)		2.78"
(70.61mm)		-0.17"
(-4.32mm)		35th Driest
Driest since:
1930
94th Wettest
Wettest since:
1950, 1958
Jun–Jul 1964
2-Month		5.42"
(137.67mm)		5.70"
(144.78mm)		-0.28"
(-7.11mm)		38th Driest
Driest since:
1930
91st Wettest
Wettest since:
1928
May–Jul 1964
3-Month		7.67"
(194.82mm)		8.62"
(218.95mm)		-0.95"
(-24.13mm)		21st Driest
Driest since:
1988
108th Wettest
Wettest since:
2015
Ties: 1933
Apr–Jul 1964
4-Month		10.96"
(278.38mm)		11.13"
(282.70mm)		-0.17"
(-4.32mm)		51st Driest
Driest since:
1934
78th Wettest
Wettest since:
2015
Mar–Jul 1964
5-Month		13.79"
(350.27mm)		13.64"
(346.46mm)		0.15"
(3.81mm)		60th Driest
Driest since:
1936
69th Wettest
Wettest since:
1973
Ties: 1909
Feb–Jul 1964
6-Month		15.35"
(389.89mm)		15.78"
(400.81mm)		-0.43"
(-10.92mm)		47th Driest
Driest since:
1934
82nd Wettest
Wettest since:
2019
Jan–Jul 1964
7-Month		17.78"
(451.61mm)		18.09"
(459.49mm)		-0.31"
(-7.88mm)		51st Driest
Driest since:
1934
78th Wettest
Wettest since:
2019
Dec 1963–Jul 1964
8-Month		19.26"
(489.20mm)		20.44"
(519.18mm)		-1.18"
(-29.98mm)		34th Driest
Driest since:
1931
94th Wettest
Wettest since:
2019
Nov 1963–Jul 1964
9-Month		21.92"
(556.77mm)		22.66"
(575.56mm)		-0.74"
(-18.79mm)		41st Driest
Driest since:
1934
87th Wettest
Wettest since:
2019
Ties: 2018
Oct 1963–Jul 1964
10-Month		22.88"
(581.15mm)		24.83"
(630.68mm)		-1.95"
(-49.53mm)		23rd Driest
Driest since:
1934
105th Wettest
Wettest since:
2019
Sep 1963–Jul 1964
11-Month		25.09"
(637.29mm)		27.33"
(694.18mm)		-2.24"
(-56.89mm)		20th Driest
Driest since:
1934
108th Wettest
Wettest since:
2019
Aug 1963–Jul 1964
12-Month		27.42"
(696.47mm)		29.95"
(760.73mm)		-2.53"
(-64.26mm)		18th Driest
Driest since:
1918
110th Wettest
Wettest since:
2019
Ties: 1956
Feb 1963–Jul 1964
18-Month		41.91"
(1,064.51mm)		45.74"
(1,161.80mm)		-3.83"
(-97.29mm)		12th Driest
Driest since:
1931
116th Wettest
Wettest since:
2019
Aug 1962–Jul 1964
24-Month		54.26"
(1,378.20mm)		59.92"
(1,521.97mm)		-5.66"
(-143.77mm)		9th Driest
Driest since:
1918
118th Wettest
Wettest since:
2020
Aug 1961–Jul 1964
36-Month		84.70"
(2,151.38mm)		89.88"
(2,282.95mm)		-5.18"
(-131.57mm)		16th Driest
Driest since:
1956
110th Wettest
Wettest since:
2019
Aug 1960–Jul 1964
48-Month		114.72"
(2,913.89mm)		119.78"
(3,042.41mm)		-5.06"
(-128.52mm)		19th Driest
Driest since:
1956
106th Wettest
Wettest since:
2019
Aug 1959–Jul 1964
60-Month		145.10"
(3,685.54mm)		149.64"
(3,800.86mm)		-4.54"
(-115.32mm)		24th Driest
Driest since:
1934
100th Wettest
Wettest since:
2019
Ties: 1925

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