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 2019

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 2019
1-Month
2.76"
(70.10mm)
2.78"
(70.61mm)
-0.02"
(-0.51mm)
58th Driest
Driest since:
1930
71st Wettest
Wettest since:
1950, 1958
Jun–Jul 2019
2-Month
6.13"
(155.70mm)
5.70"
(144.78mm)
0.43"
(10.92mm)
99th Driest
Driest since:
1930
30th Wettest
Wettest since:
1928
May–Jul 2019
3-Month
10.60"
(269.24mm)
8.62"
(218.95mm)
1.98"
(50.29mm)
126th Driest
Driest since:
1988
3rd Wettest
Wettest since:
2015
Apr–Jul 2019
4-Month
13.81"
(350.77mm)
11.13"
(282.70mm)
2.68"
(68.07mm)
126th Driest
Driest since:
1934
3rd Wettest
Wettest since:
2015
Mar–Jul 2019
5-Month
16.05"
(407.67mm)
13.64"
(346.46mm)
2.41"
(61.21mm)
124th Driest
Driest since:
1936
5th Wettest
Wettest since:
1973
Feb–Jul 2019
6-Month
19.33"
(490.98mm)
15.78"
(400.81mm)
3.55"
(90.17mm)
128th Driest
Driest since:
1934
1st Wettest
Wettest to Date
2019
Jan–Jul 2019
7-Month
21.89"
(556.01mm)
18.09"
(459.49mm)
3.80"
(96.52mm)
128th Driest
Driest since:
1934
1st Wettest
Wettest to Date
2019
Dec 2018–Jul 2019
8-Month
25.14"
(638.56mm)
20.43"
(518.92mm)
4.71"
(119.64mm)
127th Driest
Driest since:
1931
1st Wettest
Wettest to Date
2019
Nov 2018–Jul 2019
9-Month
27.85"
(707.39mm)
22.66"
(575.56mm)
5.19"
(131.83mm)
127th Driest
Driest since:
1934
1st Wettest
Wettest to Date
2019
Oct 2018–Jul 2019
10-Month
31.28"
(794.51mm)
24.83"
(630.68mm)
6.45"
(163.83mm)
127th Driest
Driest since:
1934
1st Wettest
Wettest to Date
2019
Sep 2018–Jul 2019
11-Month
34.85"
(885.19mm)
27.33"
(694.18mm)
7.52"
(191.01mm)
127th Driest
Driest since:
1934
1st Wettest
Wettest to Date
2019
Aug 2018–Jul 2019
12-Month
37.83"
(960.88mm)
29.95"
(760.73mm)
7.88"
(200.15mm)
127th Driest
Driest since:
1918
1st Wettest
Wettest to Date
2019
Feb 2018–Jul 2019
18-Month
54.69"
(1,389.13mm)
45.74"
(1,161.80mm)
8.95"
(227.33mm)
127th Driest
Driest since:
1931
1st Wettest
Wettest to Date
2019
Aug 2017–Jul 2019
24-Month
68.04"
(1,728.22mm)
59.92"
(1,521.97mm)
8.12"
(206.25mm)
125th Driest
Driest since:
1918
2nd Wettest
Wettest to Date
2020
Aug 2016–Jul 2019
36-Month
101.91"
(2,588.51mm)
89.88"
(2,282.95mm)
12.03"
(305.56mm)
125th Driest
Driest since:
1956
1st Wettest
Wettest to Date
2019
Aug 2015–Jul 2019
48-Month
135.11"
(3,431.79mm)
119.78"
(3,042.41mm)
15.33"
(389.38mm)
124th Driest
Driest since:
1956
1st Wettest
Wettest to Date
2019
Aug 2014–Jul 2019
60-Month
167.76"
(4,261.10mm)
149.64"
(3,800.86mm)
18.12"
(460.24mm)
123rd Driest
Driest since:
1934
1st Wettest
Wettest to Date
2019

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