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, April 1909

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2023)		Wettest/Driest
Since		Record
April 1909
1-Month		2.28"
(57.91mm)		2.52"
(64.01mm)		-0.24"
(-6.10mm)		41st Driest
Driest since:
1987
89th Wettest
Wettest since:
1957
Mar–Apr 1909
2-Month		4.49"
(114.05mm)		5.03"
(127.76mm)		-0.54"
(-13.71mm)		28th Driest
Driest since:
1910
102nd Wettest
Wettest since:
1973
Ties: 1926, 1969
Feb–Apr 1909
3-Month		7.37"
(187.20mm)		7.16"
(181.86mm)		0.21"
(5.34mm)		86th Driest
Driest since:
1910
44th Wettest
Wettest since:
1983
Jan–Apr 1909
4-Month		10.11"
(256.79mm)		9.48"
(240.79mm)		0.63"
(16.00mm)		97th Driest
Driest since:
1910
33rd Wettest
Wettest since:
1998
Ties: 1964, 1999
Dec 1908–Apr 1909
5-Month		11.84"
(300.74mm)		11.82"
(300.23mm)		0.02"
(0.51mm)		66th Driest
Driest since:
1931
63rd Wettest
Wettest since:
1983
Nov 1908–Apr 1909
6-Month		13.51"
(343.15mm)		14.05"
(356.87mm)		-0.54"
(-13.72mm)		50th Driest
Driest since:
1977
79th Wettest
Wettest since:
1983
Oct 1908–Apr 1909
7-Month		15.54"
(394.72mm)		16.22"
(411.99mm)		-0.68"
(-17.27mm)		41st Driest
Driest since:
1981
88th Wettest
Wettest since:
1983
Sep 1908–Apr 1909
8-Month		17.37"
(441.20mm)		18.71"
(475.23mm)		-1.34"
(-34.03mm)		27th Driest
Driest since:
1918
102nd Wettest
Wettest since:
2019
Aug 1908–Apr 1909
9-Month		20.25"
(514.35mm)		21.33"
(541.78mm)		-1.08"
(-27.43mm)		35th Driest
Driest since:
1918
94th Wettest
Wettest since:
2019
Ties: 2013
Jul 1908–Apr 1909
10-Month		23.26"
(590.80mm)		24.12"
(612.65mm)		-0.86"
(-21.85mm)		39th Driest
Driest since:
1931
90th Wettest
Wettest since:
2019
Jun 1908–Apr 1909
11-Month		26.28"
(667.51mm)		27.04"
(686.82mm)		-0.76"
(-19.31mm)		42nd Driest
Driest since:
1931
87th Wettest
Wettest since:
2019
May 1908–Apr 1909
12-Month		30.41"
(772.41mm)		29.95"
(760.73mm)		0.46"
(11.68mm)		70th Driest
Driest since:
1918
59th Wettest
Wettest since:
2019
Ties: 2018
Nov 1907–Apr 1909
18-Month		44.85"
(1,139.19mm)		44.02"
(1,118.11mm)		0.83"
(21.08mm)		79th Driest
Driest since:
1931
49th Wettest
Wettest since:
2020
May 1907–Apr 1909
24-Month		61.51"
(1,562.35mm)		59.92"
(1,521.97mm)		1.59"
(40.38mm)		81st Driest
Driest since:
1955
47th Wettest
Wettest since:
2020
May 1906–Apr 1909
36-Month		94.10"
(2,390.14mm)		89.88"
(2,282.95mm)		4.22"
(107.19mm)		102nd Driest
Driest since:
1955
25th Wettest
Wettest since:
2020
May 1905–Apr 1909
48-Month		126.02"
(3,200.91mm)		119.77"
(3,042.16mm)		6.25"
(158.75mm)		106th Driest
Driest since:
1956
20th Wettest
Wettest to Date
2019
May 1904–Apr 1909
60-Month		154.78"
(3,931.41mm)		149.63"
(3,800.60mm)		5.15"
(130.81mm)		98th Driest
Driest since:
1957
27th Wettest
Wettest to Date
2020

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