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 2013

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
July 2013
1-Month		3.34"
(84.84mm)		2.78"
(70.61mm)		0.56"
(14.23mm)		122nd Driest
Driest since:
1930
7th Wettest
Wettest since:
1950, 1958
Ties: 1938
Jun–Jul 2013
2-Month		6.68"
(169.67mm)		5.70"
(144.78mm)		0.98"
(24.89mm)		119th Driest
Driest since:
1930
10th Wettest
Wettest since:
1928
May–Jul 2013
3-Month		10.03"
(254.76mm)		8.62"
(218.95mm)		1.41"
(35.81mm)		120th Driest
Driest since:
1988
9th Wettest
Wettest since:
2015
Apr–Jul 2013
4-Month		12.93"
(328.42mm)		11.13"
(282.70mm)		1.80"
(45.72mm)		123rd Driest
Driest since:
1934
6th Wettest
Wettest since:
2015
Mar–Jul 2013
5-Month		14.65"
(372.11mm)		13.64"
(346.46mm)		1.01"
(25.65mm)		102nd Driest
Driest since:
1936
27th Wettest
Wettest since:
1973
Ties: 1944
Feb–Jul 2013
6-Month		16.67"
(423.42mm)		15.78"
(400.81mm)		0.89"
(22.61mm)		89th Driest
Driest since:
1934
40th Wettest
Wettest since:
2019
Ties: 1909
Jan–Jul 2013
7-Month		19.04"
(483.62mm)		18.09"
(459.49mm)		0.95"
(24.13mm)		92nd Driest
Driest since:
1934
37th Wettest
Wettest since:
2019
Dec 2012–Jul 2013
8-Month		21.92"
(556.77mm)		20.44"
(519.18mm)		1.48"
(37.59mm)		101st Driest
Driest since:
1931
27th Wettest
Wettest since:
2019
Ties: 1950, 2020
Nov 2012–Jul 2013
9-Month		23.24"
(590.30mm)		22.66"
(575.56mm)		0.58"
(14.74mm)		75th Driest
Driest since:
1934
53rd Wettest
Wettest since:
2019
Oct 2012–Jul 2013
10-Month		25.47"
(646.94mm)		24.83"
(630.68mm)		0.64"
(16.26mm)		74th Driest
Driest since:
1934
54th Wettest
Wettest since:
2019
Sep 2012–Jul 2013
11-Month		27.81"
(706.37mm)		27.33"
(694.18mm)		0.48"
(12.19mm)		68th Driest
Driest since:
1934
60th Wettest
Wettest since:
2019
Aug 2012–Jul 2013
12-Month		30.28"
(769.11mm)		29.95"
(760.73mm)		0.33"
(8.38mm)		61st Driest
Driest since:
1918
67th Wettest
Wettest since:
2019
Feb 2012–Jul 2013
18-Month		44.48"
(1,129.79mm)		45.74"
(1,161.80mm)		-1.26"
(-32.01mm)		38th Driest
Driest since:
1931
90th Wettest
Wettest since:
2019
Aug 2011–Jul 2013
24-Month		58.26"
(1,479.80mm)		59.92"
(1,521.97mm)		-1.66"
(-42.17mm)		38th Driest
Driest since:
1918
89th Wettest
Wettest since:
2020
Aug 2010–Jul 2013
36-Month		88.60"
(2,250.44mm)		89.88"
(2,282.95mm)		-1.28"
(-32.51mm)		46th Driest
Driest since:
1956
80th Wettest
Wettest since:
2019
Aug 2009–Jul 2013
48-Month		122.27"
(3,105.66mm)		119.78"
(3,042.41mm)		2.49"
(63.25mm)		81st Driest
Driest since:
1956
44th Wettest
Wettest since:
2019
Aug 2008–Jul 2013
60-Month		153.04"
(3,887.22mm)		149.64"
(3,800.86mm)		3.40"
(86.36mm)		81st Driest
Driest since:
1934
43rd Wettest
Wettest since:
2019

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