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 2004

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
July 2004
1-Month		3.05"
(77.47mm)		2.78"
(70.61mm)		0.27"
(6.86mm)		101st Driest
Driest since:
1930
28th Wettest
Wettest since:
1950, 1958
Ties: 1945
Jun–Jul 2004
2-Month		6.56"
(166.62mm)		5.70"
(144.78mm)		0.86"
(21.84mm)		116th Driest
Driest since:
1930
13th Wettest
Wettest since:
1928
May–Jul 2004
3-Month		9.90"
(251.46mm)		8.62"
(218.95mm)		1.28"
(32.51mm)		117th Driest
Driest since:
1988
12th Wettest
Wettest since:
2015
Apr–Jul 2004
4-Month		12.40"
(314.96mm)		11.13"
(282.70mm)		1.27"
(32.26mm)		113th Driest
Driest since:
1934
16th Wettest
Wettest since:
2015
Mar–Jul 2004
5-Month		14.41"
(366.01mm)		13.64"
(346.46mm)		0.77"
(19.55mm)		88th Driest
Driest since:
1936
41st Wettest
Wettest since:
1973
Feb–Jul 2004
6-Month		16.86"
(428.24mm)		15.78"
(400.81mm)		1.08"
(27.43mm)		99th Driest
Driest since:
1934
30th Wettest
Wettest since:
2019
Ties: 2018
Jan–Jul 2004
7-Month		18.83"
(478.28mm)		18.09"
(459.49mm)		0.74"
(18.79mm)		88th Driest
Driest since:
1934
41st Wettest
Wettest since:
2019
Ties: 1929
Dec 2003–Jul 2004
8-Month		21.21"
(538.73mm)		20.44"
(519.18mm)		0.77"
(19.55mm)		83rd Driest
Driest since:
1931
45th Wettest
Wettest since:
2019
Nov 2003–Jul 2004
9-Month		23.76"
(603.50mm)		22.66"
(575.56mm)		1.10"
(27.94mm)		88th Driest
Driest since:
1934
40th Wettest
Wettest since:
2019
Oct 2003–Jul 2004
10-Month		25.59"
(649.99mm)		24.83"
(630.68mm)		0.76"
(19.31mm)		76th Driest
Driest since:
1934
52nd Wettest
Wettest since:
2019
Sep 2003–Jul 2004
11-Month		28.41"
(721.61mm)		27.33"
(694.18mm)		1.08"
(27.43mm)		86th Driest
Driest since:
1934
42nd Wettest
Wettest since:
2019
Aug 2003–Jul 2004
12-Month		30.97"
(786.64mm)		29.95"
(760.73mm)		1.02"
(25.91mm)		83rd Driest
Driest since:
1918
45th Wettest
Wettest since:
2019
Feb 2003–Jul 2004
18-Month		48.01"
(1,219.45mm)		45.74"
(1,161.80mm)		2.27"
(57.65mm)		95th Driest
Driest since:
1931
33rd Wettest
Wettest since:
2019
Aug 2002–Jul 2004
24-Month		62.41"
(1,585.21mm)		59.92"
(1,521.97mm)		2.49"
(63.24mm)		91st Driest
Driest since:
1918
36th Wettest
Wettest since:
2020
Aug 2001–Jul 2004
36-Month		90.06"
(2,287.52mm)		89.88"
(2,282.95mm)		0.18"
(4.57mm)		61st Driest
Driest since:
1956
65th Wettest
Wettest since:
2019
Aug 2000–Jul 2004
48-Month		118.20"
(3,002.28mm)		119.78"
(3,042.41mm)		-1.58"
(-40.13mm)		46th Driest
Driest since:
1956
79th Wettest
Wettest since:
2019
Aug 1999–Jul 2004
60-Month		145.19"
(3,687.83mm)		149.64"
(3,800.86mm)		-4.45"
(-113.03mm)		27th Driest
Driest since:
1934
97th Wettest
Wettest since:
2019

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