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 1907

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2023)		Wettest/Driest
Since		Record
April 1907
1-Month		2.32"
(58.93mm)		2.52"
(64.01mm)		-0.20"
(-5.08mm)		45th Driest
Driest since:
1987
85th Wettest
Wettest since:
1957
Ties: 1915, 1988, 2000
Mar–Apr 1907
2-Month		4.77"
(121.16mm)		5.03"
(127.76mm)		-0.26"
(-6.60mm)		50th Driest
Driest since:
1910
80th Wettest
Wettest since:
1973
Ties: 1963
Feb–Apr 1907
3-Month		6.59"
(167.39mm)		7.16"
(181.86mm)		-0.57"
(-14.47mm)		31st Driest
Driest since:
1910
99th Wettest
Wettest since:
1983
Ties: 2021
Jan–Apr 1907
4-Month		9.34"
(237.24mm)		9.48"
(240.79mm)		-0.14"
(-3.55mm)		63rd Driest
Driest since:
1910
67th Wettest
Wettest since:
1998
Dec 1906–Apr 1907
5-Month		12.22"
(310.39mm)		11.82"
(300.23mm)		0.40"
(10.16mm)		84th Driest
Driest since:
1931
45th Wettest
Wettest since:
1983
Nov 1906–Apr 1907
6-Month		14.71"
(373.63mm)		14.05"
(356.87mm)		0.66"
(16.76mm)		94th Driest
Driest since:
1977
35th Wettest
Wettest since:
1983
Oct 1906–Apr 1907
7-Month		16.79"
(426.47mm)		16.22"
(411.99mm)		0.57"
(14.48mm)		88th Driest
Driest since:
1981
41st Wettest
Wettest since:
1983
Sep 1906–Apr 1907
8-Month		19.70"
(500.38mm)		18.71"
(475.23mm)		0.99"
(25.15mm)		96th Driest
Driest since:
1918
33rd Wettest
Wettest since:
2019
Ties: 1937, 1982
Aug 1906–Apr 1907
9-Month		23.09"
(586.49mm)		21.33"
(541.78mm)		1.76"
(44.71mm)		106th Driest
Driest since:
1918
23rd Wettest
Wettest since:
2019
Jul 1906–Apr 1907
10-Month		26.39"
(670.31mm)		24.12"
(612.65mm)		2.27"
(57.66mm)		114th Driest
Driest since:
1931
15th Wettest
Wettest to Date
2019
Jun 1906–Apr 1907
11-Month		29.43"
(747.52mm)		27.04"
(686.82mm)		2.39"
(60.70mm)		113th Driest
Driest since:
1931
16th Wettest
Wettest to Date
2019
May 1906–Apr 1907
12-Month		32.59"
(827.79mm)		29.95"
(760.73mm)		2.64"
(67.06mm)		113th Driest
Driest since:
1918
16th Wettest
Wettest to Date
2019
Nov 1905–Apr 1907
18-Month		46.67"
(1,185.42mm)		44.02"
(1,118.11mm)		2.65"
(67.31mm)		105th Driest
Driest since:
1931
23rd Wettest
Wettest to Date
2020
May 1905–Apr 1907
24-Month		64.51"
(1,638.55mm)		59.92"
(1,521.97mm)		4.59"
(116.58mm)		114th Driest
Driest since:
1955
14th Wettest
Wettest to Date
2020
May 1904–Apr 1907
36-Month		93.27"
(2,369.06mm)		89.88"
(2,282.95mm)		3.39"
(86.11mm)		96th Driest
Driest since:
1955
31st Wettest
Wettest to Date
2020
May 1903–Apr 1907
48-Month		121.79"
(3,093.47mm)		119.77"
(3,042.16mm)		2.02"
(51.31mm)		77th Driest
Driest since:
1956
49th Wettest
Wettest to Date
2019
May 1902–Apr 1907
60-Month		153.96"
(3,910.58mm)		149.63"
(3,800.60mm)		4.33"
(109.98mm)		91st Driest
Driest since:
1957
34th Wettest
Wettest to Date
2020

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