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 1920

View Period (Months):
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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 1920
1-Month
2.70"
(68.58mm)
2.78"
(70.61mm)
-0.08"
(-2.03mm)
45th Driest
Driest since:
1930
84th Wettest
Wettest since:
1950, 1958
Ties: 1923, 1988, 1991, 2005
Jun–Jul 1920
2-Month
5.59"
(141.99mm)
5.70"
(144.78mm)
-0.11"
(-2.79mm)
47th Driest
Driest since:
1930
82nd Wettest
Wettest since:
1928
Ties: 1922
May–Jul 1920
3-Month
8.38"
(212.85mm)
8.62"
(218.95mm)
-0.24"
(-6.10mm)
41st Driest
Driest since:
1988
88th Wettest
Wettest since:
2015
Apr–Jul 1920
4-Month
11.68"
(296.67mm)
11.13"
(282.70mm)
0.55"
(13.97mm)
85th Driest
Driest since:
1934
44th Wettest
Wettest since:
2015
Ties: 1968
Mar–Jul 1920
5-Month
14.46"
(367.28mm)
13.64"
(346.46mm)
0.82"
(20.82mm)
92nd Driest
Driest since:
1936
37th Wettest
Wettest since:
1973
Feb–Jul 1920
6-Month
16.07"
(408.18mm)
15.78"
(400.81mm)
0.29"
(7.37mm)
68th Driest
Driest since:
1934
61st Wettest
Wettest since:
2019
Jan–Jul 1920
7-Month
18.28"
(464.31mm)
18.09"
(459.49mm)
0.19"
(4.82mm)
70th Driest
Driest since:
1934
59th Wettest
Wettest since:
2019
Dec 1919–Jul 1920
8-Month
20.09"
(510.29mm)
20.43"
(518.92mm)
-0.34"
(-8.63mm)
47th Driest
Driest since:
1931
81st Wettest
Wettest since:
2019
Ties: 2021
Nov 1919–Jul 1920
9-Month
22.89"
(581.41mm)
22.66"
(575.56mm)
0.23"
(5.85mm)
66th Driest
Driest since:
1934
62nd Wettest
Wettest since:
2019
Oct 1919–Jul 1920
10-Month
26.34"
(669.04mm)
24.83"
(630.68mm)
1.51"
(38.36mm)
95th Driest
Driest since:
1934
33rd Wettest
Wettest since:
2019
Sep 1919–Jul 1920
11-Month
28.68"
(728.47mm)
27.33"
(694.18mm)
1.35"
(34.29mm)
92nd Driest
Driest since:
1934
36th Wettest
Wettest since:
2019
Aug 1919–Jul 1920
12-Month
31.16"
(791.46mm)
29.95"
(760.73mm)
1.21"
(30.73mm)
90th Driest
Driest since:
1918
38th Wettest
Wettest since:
2019
Feb 1919–Jul 1920
18-Month
48.13"
(1,222.50mm)
45.74"
(1,161.80mm)
2.39"
(60.70mm)
97th Driest
Driest since:
1931
31st Wettest
Wettest since:
2019
Aug 1918–Jul 1920
24-Month
62.85"
(1,596.39mm)
59.92"
(1,521.97mm)
2.93"
(74.42mm)
98th Driest
Driest since:
1918
29th Wettest
Wettest since:
2020
Aug 1917–Jul 1920
36-Month
87.42"
(2,220.47mm)
89.88"
(2,282.95mm)
-2.46"
(-62.48mm)
33rd Driest
Driest since:
1956
93rd Wettest
Wettest since:
2019
Aug 1916–Jul 1920
48-Month
114.47"
(2,907.54mm)
119.78"
(3,042.41mm)
-5.31"
(-134.87mm)
17th Driest
Driest since:
1956
108th Wettest
Wettest since:
2019
Aug 1915–Jul 1920
60-Month
146.37"
(3,717.80mm)
149.64"
(3,800.86mm)
-3.27"
(-83.06mm)
33rd Driest
Driest since:
1934
91st Wettest
Wettest since:
2019

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