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 1933

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
July 1933
1-Month 		2.83"
(71.88mm)		 2.78"
(70.61mm)		 0.05"
(1.27mm)		 64th Driest
Driest since:
 1930
65th Wettest
Wettest since:
 1950, 1958
Ties: 1984, 1987
Jun–Jul 1933
2-Month 		4.28"
(108.71mm)		 5.70"
(144.78mm)		 -1.42"
(-36.07mm)		 3rd Driest
Driest since:
 1930
126th Wettest
Wettest since:
 1928
Ties: 1980
May–Jul 1933
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: 1964
Apr–Jul 1933
4-Month 		10.21"
(259.33mm)		 11.13"
(282.70mm)		 -0.92"
(-23.37mm)		 25th Driest
Driest since:
 1934
104th Wettest
Wettest since:
 2015
Mar–Jul 1933
5-Month 		12.68"
(322.07mm)		 13.64"
(346.46mm)		 -0.96"
(-24.39mm)		 26th Driest
Driest since:
 1936
103rd Wettest
Wettest since:
 1973
Feb–Jul 1933
6-Month 		14.62"
(371.35mm)		 15.78"
(400.81mm)		 -1.16"
(-29.46mm)		 26th Driest
Driest since:
 1934
103rd Wettest
Wettest since:
 2019
Jan–Jul 1933
7-Month 		16.87"
(428.50mm)		 18.09"
(459.49mm)		 -1.22"
(-30.99mm)		 26th Driest
Driest since:
 1934
103rd Wettest
Wettest since:
 2019
Dec 1932–Jul 1933
8-Month 		19.79"
(502.67mm)		 20.44"
(519.18mm)		 -0.65"
(-16.51mm)		 41st Driest
Driest since:
 1931
87th Wettest
Wettest since:
 2019
Nov 1932–Jul 1933
9-Month 		21.81"
(553.97mm)		 22.66"
(575.56mm)		 -0.85"
(-21.59mm)		 39th Driest
Driest since:
 1934
89th Wettest
Wettest since:
 2019
Oct 1932–Jul 1933
10-Month 		24.29"
(616.97mm)		 24.83"
(630.68mm)		 -0.54"
(-13.71mm)		 46th Driest
Driest since:
 1934
82nd Wettest
Wettest since:
 2019
Sep 1932–Jul 1933
11-Month 		26.45"
(671.83mm)		 27.33"
(694.18mm)		 -0.88"
(-22.35mm)		 40th Driest
Driest since:
 1934
88th Wettest
Wettest since:
 2019
Aug 1932–Jul 1933
12-Month 		29.30"
(744.22mm)		 29.95"
(760.73mm)		 -0.65"
(-16.51mm)		 45th Driest
Driest since:
 1918
83rd Wettest
Wettest since:
 2019
Feb 1932–Jul 1933
18-Month 		44.06"
(1,119.12mm)		 45.74"
(1,161.80mm)		 -1.68"
(-42.68mm)		 36th Driest
Driest since:
 1931
92nd Wettest
Wettest since:
 2019
Aug 1931–Jul 1933
24-Month 		59.91"
(1,521.71mm)		 59.92"
(1,521.97mm)		 -0.01"
(-0.26mm)		 58th Driest
Driest since:
 1918
69th Wettest
Wettest since:
 2020
Aug 1930–Jul 1933
36-Month 		84.99"
(2,158.75mm)		 89.88"
(2,282.95mm)		 -4.89"
(-124.20mm)		 19th Driest
Driest since:
 1956
107th Wettest
Wettest since:
 2019
Aug 1929–Jul 1933
48-Month 		111.73"
(2,837.94mm)		 119.78"
(3,042.41mm)		 -8.05"
(-204.47mm)		 6th Driest
Driest to Date
 1956
119th Wettest
Wettest since:
 2019
Aug 1928–Jul 1933
60-Month 		141.94"
(3,605.28mm)		 149.64"
(3,800.86mm)		 -7.70"
(-195.58mm)		 9th Driest
Driest to Date
 1934
115th Wettest
Wettest since:
 2019

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