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 2008

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Wettest/Driest
Since
Record
July 2008
1-Month
2.80"
(71.12mm)
2.78"
(70.61mm)
0.02"
(0.51mm)
62nd Driest
Driest since:
1930
67th Wettest
Wettest since:
1950, 1958
Ties: 2017
Jun–Jul 2008
2-Month
5.80"
(147.32mm)
5.70"
(144.78mm)
0.10"
(2.54mm)
61st Driest
Driest since:
1930
68th Wettest
Wettest since:
1928
May–Jul 2008
3-Month
8.80"
(223.52mm)
8.62"
(218.95mm)
0.18"
(4.57mm)
66th Driest
Driest since:
1988
63rd Wettest
Wettest since:
2015
Ties: 1998, 1999
Apr–Jul 2008
4-Month
11.34"
(288.04mm)
11.13"
(282.70mm)
0.21"
(5.34mm)
63rd Driest
Driest since:
1934
66th Wettest
Wettest since:
2015
Mar–Jul 2008
5-Month
13.86"
(352.04mm)
13.64"
(346.46mm)
0.22"
(5.58mm)
68th Driest
Driest since:
1936
61st Wettest
Wettest since:
1973
Ties: 1903, 1999
Feb–Jul 2008
6-Month
16.33"
(414.78mm)
15.78"
(400.81mm)
0.55"
(13.97mm)
77th Driest
Driest since:
1934
52nd Wettest
Wettest since:
2019
Jan–Jul 2008
7-Month
18.54"
(470.92mm)
18.09"
(459.49mm)
0.45"
(11.43mm)
76th Driest
Driest since:
1934
53rd Wettest
Wettest since:
2019
Dec 2007–Jul 2008
8-Month
21.51"
(546.35mm)
20.44"
(519.18mm)
1.07"
(27.17mm)
92nd Driest
Driest since:
1931
36th Wettest
Wettest since:
2019
Ties: 1984
Nov 2007–Jul 2008
9-Month
22.91"
(581.91mm)
22.66"
(575.56mm)
0.25"
(6.35mm)
67th Driest
Driest since:
1934
61st Wettest
Wettest since:
2019
Oct 2007–Jul 2008
10-Month
25.63"
(651.00mm)
24.83"
(630.68mm)
0.80"
(20.32mm)
77th Driest
Driest since:
1934
51st Wettest
Wettest since:
2019
Sep 2007–Jul 2008
11-Month
27.80"
(706.12mm)
27.33"
(694.18mm)
0.47"
(11.94mm)
67th Driest
Driest since:
1934
61st Wettest
Wettest since:
2019
Aug 2007–Jul 2008
12-Month
30.40"
(772.16mm)
29.95"
(760.73mm)
0.45"
(11.43mm)
67th Driest
Driest since:
1918
61st Wettest
Wettest since:
2019
Feb 2007–Jul 2008
18-Month
45.50"
(1,155.70mm)
45.74"
(1,161.80mm)
-0.24"
(-6.10mm)
54th Driest
Driest since:
1931
74th Wettest
Wettest since:
2019
Aug 2006–Jul 2008
24-Month
61.25"
(1,555.75mm)
59.92"
(1,521.97mm)
1.33"
(33.78mm)
76th Driest
Driest since:
1918
51st Wettest
Wettest since:
2020
Aug 2005–Jul 2008
36-Month
89.35"
(2,269.49mm)
89.88"
(2,282.95mm)
-0.53"
(-13.46mm)
52nd Driest
Driest since:
1956
74th Wettest
Wettest since:
2019
Aug 2004–Jul 2008
48-Month
122.04"
(3,099.82mm)
119.78"
(3,042.41mm)
2.26"
(57.41mm)
79th Driest
Driest since:
1956
46th Wettest
Wettest since:
2019
Aug 2003–Jul 2008
60-Month
153.01"
(3,886.45mm)
149.64"
(3,800.86mm)
3.37"
(85.59mm)
80th Driest
Driest since:
1934
44th Wettest
Wettest since:
2019

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