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 1931

View Period (Months):
Download: csv json xml
  • Record Driest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
July 1931
1-Month
2.71"
(68.83mm)
2.78"
(70.61mm)
-0.07"
(-1.78mm)
50th Driest
Driest since:
1930
79th Wettest
Wettest since:
1950, 1958
Ties: 1997
Jun–Jul 1931
2-Month
4.85"
(123.19mm)
5.70"
(144.78mm)
-0.85"
(-21.59mm)
13th Driest
Driest since:
1930
116th Wettest
Wettest since:
1928
May–Jul 1931
3-Month
7.14"
(181.36mm)
8.62"
(218.95mm)
-1.48"
(-37.59mm)
6th Driest
Driest since:
1988
123rd Wettest
Wettest since:
2015
Apr–Jul 1931
4-Month
9.21"
(233.93mm)
11.13"
(282.70mm)
-1.92"
(-48.77mm)
5th Driest
Driest since:
1934
124th Wettest
Wettest since:
2015
Mar–Jul 1931
5-Month
11.52"
(292.61mm)
13.64"
(346.46mm)
-2.12"
(-53.85mm)
9th Driest
Driest since:
1936
120th Wettest
Wettest since:
1973
Feb–Jul 1931
6-Month
13.36"
(339.34mm)
15.78"
(400.81mm)
-2.42"
(-61.47mm)
9th Driest
Driest since:
1934
120th Wettest
Wettest since:
2019
Jan–Jul 1931
7-Month
14.92"
(378.97mm)
18.09"
(459.49mm)
-3.17"
(-80.52mm)
3rd Driest
Driest since:
1934
126th Wettest
Wettest since:
2019
Dec 1930–Jul 1931
8-Month
16.20"
(411.48mm)
20.43"
(518.92mm)
-4.23"
(-107.44mm)
1st Driest
Driest since:
1931
127th Wettest
Wettest since:
2019
Nov 1930–Jul 1931
9-Month
18.48"
(469.39mm)
22.66"
(575.56mm)
-4.18"
(-106.17mm)
3rd Driest
Driest since:
1934
125th Wettest
Wettest since:
2019
Oct 1930–Jul 1931
10-Month
20.79"
(528.07mm)
24.83"
(630.68mm)
-4.04"
(-102.61mm)
4th Driest
Driest since:
1934
124th Wettest
Wettest since:
2019
Sep 1930–Jul 1931
11-Month
23.12"
(587.25mm)
27.33"
(694.18mm)
-4.21"
(-106.93mm)
5th Driest
Driest since:
1934
123rd Wettest
Wettest since:
2019
Aug 1930–Jul 1931
12-Month
25.08"
(637.03mm)
29.95"
(760.73mm)
-4.87"
(-123.70mm)
3rd Driest
Driest since:
1918
125th Wettest
Wettest since:
2019
Feb 1930–Jul 1931
18-Month
37.92"
(963.17mm)
45.74"
(1,161.80mm)
-7.82"
(-198.63mm)
1st Driest
Driest since:
1931
127th Wettest
Wettest since:
2019
Aug 1929–Jul 1931
24-Month
51.82"
(1,316.23mm)
59.92"
(1,521.97mm)
-8.10"
(-205.74mm)
2nd Driest
Driest since:
1918
125th Wettest
Wettest since:
2020
Aug 1928–Jul 1931
36-Month
82.03"
(2,083.56mm)
89.88"
(2,282.95mm)
-7.85"
(-199.39mm)
4th Driest
Driest since:
1956
122nd Wettest
Wettest since:
2019
Aug 1927–Jul 1931
48-Month
113.13"
(2,873.50mm)
119.78"
(3,042.41mm)
-6.65"
(-168.91mm)
12th Driest
Driest since:
1956
113th Wettest
Wettest since:
2019
Aug 1926–Jul 1931
60-Month
146.69"
(3,725.93mm)
149.64"
(3,800.86mm)
-2.95"
(-74.93mm)
36th Driest
Driest since:
1934
88th Wettest
Wettest since:
2019

Citing This Page