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 1918

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 1918
1-Month
2.33"
(59.18mm)
2.78"
(70.61mm)
-0.45"
(-11.43mm)
13th Driest
Driest since:
1930
116th Wettest
Wettest since:
1950, 1958
Jun–Jul 1918
2-Month
4.58"
(116.33mm)
5.70"
(144.78mm)
-1.12"
(-28.45mm)
7th Driest
Driest since:
1930
122nd Wettest
Wettest since:
1928
May–Jul 1918
3-Month
7.17"
(182.12mm)
8.62"
(218.95mm)
-1.45"
(-36.83mm)
7th Driest
Driest since:
1988
122nd Wettest
Wettest since:
2015
Apr–Jul 1918
4-Month
9.99"
(253.75mm)
11.13"
(282.70mm)
-1.14"
(-28.95mm)
20th Driest
Driest since:
1934
109th Wettest
Wettest since:
2015
Ties: 1977
Mar–Jul 1918
5-Month
11.84"
(300.74mm)
13.64"
(346.46mm)
-1.80"
(-45.72mm)
12th Driest
Driest since:
1936
117th Wettest
Wettest since:
1973
Feb–Jul 1918
6-Month
13.56"
(344.42mm)
15.78"
(400.81mm)
-2.22"
(-56.39mm)
10th Driest
Driest since:
1934
119th Wettest
Wettest since:
2019
Jan–Jul 1918
7-Month
15.97"
(405.64mm)
18.09"
(459.49mm)
-2.12"
(-53.85mm)
12th Driest
Driest since:
1934
117th Wettest
Wettest since:
2019
Dec 1917–Jul 1918
8-Month
17.63"
(447.80mm)
20.43"
(518.92mm)
-2.80"
(-71.12mm)
6th Driest
Driest since:
1931
122nd Wettest
Wettest since:
2019
Ties: 1930
Nov 1917–Jul 1918
9-Month
18.58"
(471.93mm)
22.66"
(575.56mm)
-4.08"
(-103.63mm)
4th Driest
Driest since:
1934
124th Wettest
Wettest since:
2019
Oct 1917–Jul 1918
10-Month
19.96"
(506.98mm)
24.83"
(630.68mm)
-4.87"
(-123.70mm)
2nd Driest
Driest since:
1934
126th Wettest
Wettest since:
2019
Sep 1917–Jul 1918
11-Month
22.13"
(562.10mm)
27.33"
(694.18mm)
-5.20"
(-132.08mm)
2nd Driest
Driest since:
1934
126th Wettest
Wettest since:
2019
Aug 1917–Jul 1918
12-Month
24.57"
(624.08mm)
29.95"
(760.73mm)
-5.38"
(-136.65mm)
1st Driest
Driest since:
1918
127th Wettest
Wettest since:
2019
Feb 1917–Jul 1918
18-Month
39.13"
(993.90mm)
45.74"
(1,161.80mm)
-6.61"
(-167.90mm)
3rd Driest
Driest since:
1931
125th Wettest
Wettest since:
2019
Aug 1916–Jul 1918
24-Month
51.62"
(1,311.15mm)
59.92"
(1,521.97mm)
-8.30"
(-210.82mm)
1st Driest
Driest since:
1918
126th Wettest
Wettest since:
2020
Aug 1915–Jul 1918
36-Month
83.52"
(2,121.41mm)
89.88"
(2,282.95mm)
-6.36"
(-161.54mm)
11th Driest
Driest since:
1956
115th Wettest
Wettest since:
2019
Aug 1914–Jul 1918
48-Month
115.38"
(2,930.65mm)
119.78"
(3,042.41mm)
-4.40"
(-111.76mm)
24th Driest
Driest since:
1956
101st Wettest
Wettest since:
2019
Aug 1913–Jul 1918
60-Month
144.49"
(3,670.05mm)
149.64"
(3,800.86mm)
-5.15"
(-130.81mm)
20th Driest
Driest since:
1934
104th Wettest
Wettest since:
2019

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