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
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
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
88th 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
101st Wettest
Wettest since:
1973
Ties: 1926, 1969
Feb–Apr 1909
3-Month
7.37"
(187.20mm)
7.16"
(181.86mm)
0.21"
(5.34mm)
85th Driest
Driest since:
1910
44th Wettest
Wettest since:
1983
Jan–Apr 1909
4-Month
10.11"
(256.79mm)
9.47"
(240.54mm)
0.64"
(16.25mm)
97th Driest
Driest since:
1910
32nd 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
62nd 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
78th 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
87th 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
101st 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
93rd 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
89th 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
86th Wettest
Wettest since:
2019
May 1908–Apr 1909
12-Month
30.41"
(772.41mm)
29.95"
(760.73mm)
0.46"
(11.68mm)
69th 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)
78th 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)
80th 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)
101st 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)
105th 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
26th Wettest
Wettest to Date
2020

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