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 1906

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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
April 1906
1-Month
2.08"
(52.83mm)
2.52"
(64.01mm)
-0.44"
(-11.18mm)
20th Driest
Driest since:
1987
109th Wettest
Wettest since:
1957
Ties: 1950
Mar–Apr 1906
2-Month
5.34"
(135.64mm)
5.03"
(127.76mm)
0.31"
(7.88mm)
91st Driest
Driest since:
1910
38th Wettest
Wettest since:
1973
Feb–Apr 1906
3-Month
7.06"
(179.32mm)
7.16"
(181.86mm)
-0.10"
(-2.54mm)
71st Driest
Driest since:
1910
58th Wettest
Wettest since:
1983
Jan–Apr 1906
4-Month
9.59"
(243.59mm)
9.48"
(240.79mm)
0.11"
(2.80mm)
74th Driest
Driest since:
1910
55th Wettest
Wettest since:
1998
Dec 1905–Apr 1906
5-Month
11.89"
(302.01mm)
11.82"
(300.23mm)
0.07"
(1.78mm)
71st Driest
Driest since:
1931
57th Wettest
Wettest since:
1983
Ties: 2013
Nov 1905–Apr 1906
6-Month
14.08"
(357.63mm)
14.05"
(356.87mm)
0.03"
(0.76mm)
73rd Driest
Driest since:
1977
55th Wettest
Wettest since:
1983
Oct 1905–Apr 1906
7-Month
16.25"
(412.75mm)
16.22"
(411.99mm)
0.03"
(0.76mm)
67th Driest
Driest since:
1981
61st Wettest
Wettest since:
1983
Ties: 1965
Sep 1905–Apr 1906
8-Month
18.82"
(478.03mm)
18.71"
(475.23mm)
0.11"
(2.80mm)
70th Driest
Driest since:
1918
58th Wettest
Wettest since:
2019
Aug 1905–Apr 1906
9-Month
21.36"
(542.54mm)
21.33"
(541.78mm)
0.03"
(0.76mm)
63rd Driest
Driest since:
1918
65th Wettest
Wettest since:
2019
Ties: 1899
Jul 1905–Apr 1906
10-Month
24.88"
(631.95mm)
24.12"
(612.65mm)
0.76"
(19.30mm)
86th Driest
Driest since:
1931
42nd Wettest
Wettest since:
2019
Ties: 1938
Jun 1905–Apr 1906
11-Month
28.18"
(715.77mm)
27.04"
(686.82mm)
1.14"
(28.95mm)
92nd Driest
Driest since:
1931
36th Wettest
Wettest since:
2019
May 1905–Apr 1906
12-Month
31.92"
(810.77mm)
29.95"
(760.73mm)
1.97"
(50.04mm)
102nd Driest
Driest since:
1918
26th Wettest
Wettest since:
2019
Nov 1904–Apr 1906
18-Month
45.37"
(1,152.40mm)
44.02"
(1,118.11mm)
1.35"
(34.29mm)
88th Driest
Driest since:
1931
39th Wettest
Wettest since:
2020
May 1904–Apr 1906
24-Month
60.68"
(1,541.27mm)
59.92"
(1,521.97mm)
0.76"
(19.30mm)
71st Driest
Driest since:
1955
56th Wettest
Wettest since:
2020
Ties: 1913
May 1903–Apr 1906
36-Month
89.20"
(2,265.68mm)
89.88"
(2,282.95mm)
-0.68"
(-17.27mm)
55th Driest
Driest since:
1955
71st Wettest
Wettest since:
2020
May 1902–Apr 1906
48-Month
121.37"
(3,082.80mm)
119.77"
(3,042.16mm)
1.60"
(40.64mm)
72nd Driest
Driest since:
1956
53rd Wettest
Wettest to Date
2019
May 1901–Apr 1906
60-Month
148.82"
(3,780.03mm)
149.63"
(3,800.60mm)
-0.81"
(-20.57mm)
54th Driest
Driest since:
1957
70th Wettest
Wettest since:
2020

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