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 2019

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
April 2019
1-Month
3.21"
(81.53mm)
2.52"
(64.01mm)
0.69"
(17.52mm)
118th Driest
Driest since:
1987
11th Wettest
Wettest since:
1957
Mar–Apr 2019
2-Month
5.45"
(138.43mm)
5.03"
(127.76mm)
0.42"
(10.67mm)
95th Driest
Driest since:
1910
34th Wettest
Wettest since:
1973
Feb–Apr 2019
3-Month
8.73"
(221.74mm)
7.16"
(181.86mm)
1.57"
(39.88mm)
121st Driest
Driest since:
1910
8th Wettest
Wettest since:
1983
Jan–Apr 2019
4-Month
11.29"
(286.77mm)
9.47"
(240.54mm)
1.82"
(46.23mm)
123rd Driest
Driest since:
1910
6th Wettest
Wettest since:
1998
Ties: 1975
Dec 2018–Apr 2019
5-Month
14.54"
(369.32mm)
11.82"
(300.23mm)
2.72"
(69.09mm)
124th Driest
Driest since:
1931
4th Wettest
Wettest since:
1983
Nov 2018–Apr 2019
6-Month
17.25"
(438.15mm)
14.05"
(356.87mm)
3.20"
(81.28mm)
124th Driest
Driest since:
1977
4th Wettest
Wettest since:
1983
Oct 2018–Apr 2019
7-Month
20.68"
(525.27mm)
16.22"
(411.99mm)
4.46"
(113.28mm)
126th Driest
Driest since:
1981
2nd Wettest
Wettest since:
1983
Sep 2018–Apr 2019
8-Month
24.25"
(615.95mm)
18.71"
(475.23mm)
5.54"
(140.72mm)
127th Driest
Driest since:
1918
1st Wettest
Wettest to Date
2019
Aug 2018–Apr 2019
9-Month
27.23"
(691.64mm)
21.33"
(541.78mm)
5.90"
(149.86mm)
127th Driest
Driest since:
1918
1st Wettest
Wettest to Date
2019
Jul 2018–Apr 2019
10-Month
30.09"
(764.29mm)
24.12"
(612.65mm)
5.97"
(151.64mm)
127th Driest
Driest since:
1931
1st Wettest
Wettest to Date
2019
Jun 2018–Apr 2019
11-Month
33.24"
(844.30mm)
27.04"
(686.82mm)
6.20"
(157.48mm)
127th Driest
Driest since:
1931
1st Wettest
Wettest to Date
2019
May 2018–Apr 2019
12-Month
36.26"
(921.00mm)
29.95"
(760.73mm)
6.31"
(160.27mm)
127th Driest
Driest since:
1918
1st Wettest
Wettest to Date
2019
Nov 2017–Apr 2019
18-Month
49.15"
(1,248.41mm)
44.02"
(1,118.11mm)
5.13"
(130.30mm)
119th Driest
Driest since:
1931
8th Wettest
Wettest since:
2020
May 2017–Apr 2019
24-Month
66.67"
(1,693.42mm)
59.92"
(1,521.97mm)
6.75"
(171.45mm)
120th Driest
Driest since:
1955
7th Wettest
Wettest since:
2020
May 2016–Apr 2019
36-Month
99.78"
(2,534.41mm)
89.88"
(2,282.95mm)
9.90"
(251.46mm)
120th Driest
Driest since:
1955
6th Wettest
Wettest since:
2020
May 2015–Apr 2019
48-Month
135.73"
(3,447.54mm)
119.77"
(3,042.16mm)
15.96"
(405.38mm)
124th Driest
Driest since:
1956
1st Wettest
Wettest to Date
2019
May 2014–Apr 2019
60-Month
166.24"
(4,222.50mm)
149.63"
(3,800.60mm)
16.61"
(421.90mm)
122nd Driest
Driest since:
1957
2nd Wettest
Wettest to Date
2020

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