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 1957

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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
July 1957
1-Month 		2.28"
(57.91mm)		 2.78"
(70.61mm)		 -0.50"
(-12.70mm)		 8th Driest
Driest since:
 1930
121st Wettest
Wettest since:
 1950, 1958
Jun–Jul 1957
2-Month 		5.93"
(150.62mm)		 5.70"
(144.78mm)		 0.23"
(5.84mm)		 76th Driest
Driest since:
 1930
53rd Wettest
Wettest since:
 1928
May–Jul 1957
3-Month 		10.17"
(258.32mm)		 8.62"
(218.95mm)		 1.55"
(39.37mm)		 124th Driest
Driest since:
 1988
5th Wettest
Wettest since:
 2015
Apr–Jul 1957
4-Month 		13.82"
(351.03mm)		 11.13"
(282.70mm)		 2.69"
(68.33mm)		 127th Driest
Driest since:
 1934
2nd Wettest
Wettest to Date
 2015
Mar–Jul 1957
5-Month 		16.33"
(414.78mm)		 13.64"
(346.46mm)		 2.69"
(68.32mm)		 127th Driest
Driest since:
 1936
2nd Wettest
Wettest to Date
 1973
Feb–Jul 1957
6-Month 		18.41"
(467.61mm)		 15.78"
(400.81mm)		 2.63"
(66.80mm)		 126th Driest
Driest since:
 1934
3rd Wettest
Wettest since:
 2019
Jan–Jul 1957
7-Month 		20.54"
(521.72mm)		 18.09"
(459.49mm)		 2.45"
(62.23mm)		 119th Driest
Driest since:
 1934
10th Wettest
Wettest since:
 2019
Dec 1956–Jul 1957
8-Month 		22.54"
(572.52mm)		 20.44"
(519.18mm)		 2.10"
(53.34mm)		 114th Driest
Driest since:
 1931
14th Wettest
Wettest since:
 2019
Nov 1956–Jul 1957
9-Month 		23.90"
(607.06mm)		 22.66"
(575.56mm)		 1.24"
(31.50mm)		 93rd Driest
Driest since:
 1934
35th Wettest
Wettest since:
 2019
Oct 1956–Jul 1957
10-Month 		25.90"
(657.86mm)		 24.83"
(630.68mm)		 1.07"
(27.18mm)		 87th Driest
Driest since:
 1934
41st Wettest
Wettest since:
 2019
Ties: 1928
Sep 1956–Jul 1957
11-Month 		27.34"
(694.44mm)		 27.33"
(694.18mm)		 0.01"
(0.26mm)		 58th Driest
Driest since:
 1934
70th Wettest
Wettest since:
 2019
Aug 1956–Jul 1957
12-Month 		29.55"
(750.57mm)		 29.95"
(760.73mm)		 -0.40"
(-10.16mm)		 50th Driest
Driest since:
 1918
78th Wettest
Wettest since:
 2019
Ties: 1909
Feb 1956–Jul 1957
18-Month 		43.65"
(1,108.71mm)		 45.74"
(1,161.80mm)		 -2.09"
(-53.09mm)		 31st Driest
Driest since:
 1931
97th Wettest
Wettest since:
 2019
Aug 1955–Jul 1957
24-Month 		56.97"
(1,447.04mm)		 59.92"
(1,521.97mm)		 -2.95"
(-74.93mm)		 22nd Driest
Driest since:
 1918
105th Wettest
Wettest since:
 2020
Aug 1954–Jul 1957
36-Month 		84.02"
(2,134.11mm)		 89.88"
(2,282.95mm)		 -5.86"
(-148.84mm)		 13th Driest
Driest since:
 1956
113th Wettest
Wettest since:
 2019
Aug 1953–Jul 1957
48-Month 		109.40"
(2,778.76mm)		 119.78"
(3,042.41mm)		 -10.38"
(-263.65mm)		 2nd Driest
Driest since:
 1956
123rd Wettest
Wettest since:
 2019
Aug 1952–Jul 1957
60-Month 		137.41"
(3,490.21mm)		 149.64"
(3,800.86mm)		 -12.23"
(-310.65mm)		 2nd Driest
Driest since:
 1934
122nd Wettest
Wettest since:
 2019

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