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, March 2020

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
March 2020
1-Month
2.86"
(72.64mm)
2.51"
(63.75mm)
0.35"
(8.89mm)
100th Driest
Driest since:
1910
29th Wettest
Wettest since:
1973
Feb–Mar 2020
2-Month
5.31"
(134.87mm)
4.64"
(117.86mm)
0.67"
(17.01mm)
109th Driest
Driest since:
1910
20th Wettest
Wettest since:
1998
Ties: 1927, 1980
Jan–Mar 2020
3-Month
8.07"
(204.98mm)
6.96"
(176.78mm)
1.11"
(28.20mm)
116th Driest
Driest since:
1910
13th Wettest
Wettest since:
1998
Dec 2019–Mar 2020
4-Month
10.64"
(270.26mm)
9.30"
(236.22mm)
1.34"
(34.04mm)
114th Driest
Driest since:
1981
14th Wettest
Wettest since:
1983, 1998
Nov 2019–Mar 2020
5-Month
12.58"
(319.53mm)
11.53"
(292.86mm)
1.05"
(26.67mm)
106th Driest
Driest since:
1977
22nd Wettest
Wettest since:
1983
Ties: 1922
Oct 2019–Mar 2020
6-Month
15.77"
(400.56mm)
13.70"
(347.98mm)
2.07"
(52.58mm)
116th Driest
Driest since:
1918
12th Wettest
Wettest since:
1983
Sep 2019–Mar 2020
7-Month
18.22"
(462.79mm)
16.19"
(411.23mm)
2.03"
(51.56mm)
111th Driest
Driest since:
1918
17th Wettest
Wettest since:
2019
Aug 2019–Mar 2020
8-Month
21.00"
(533.40mm)
18.82"
(478.03mm)
2.18"
(55.37mm)
111th Driest
Driest since:
1918
17th Wettest
Wettest since:
2019
Jul 2019–Mar 2020
9-Month
23.76"
(603.50mm)
21.60"
(548.64mm)
2.16"
(54.86mm)
110th Driest
Driest since:
1918
18th Wettest
Wettest since:
2019
Jun 2019–Mar 2020
10-Month
27.13"
(689.10mm)
24.53"
(623.06mm)
2.60"
(66.04mm)
114th Driest
Driest since:
1918
14th Wettest
Wettest since:
2019
May 2019–Mar 2020
11-Month
31.60"
(802.64mm)
27.43"
(696.72mm)
4.17"
(105.92mm)
122nd Driest
Driest since:
1918
6th Wettest
Wettest since:
2019
Apr 2019–Mar 2020
12-Month
34.81"
(884.17mm)
29.96"
(760.98mm)
4.85"
(123.19mm)
125th Driest
Driest since:
1918
3rd Wettest
Wettest since:
2016
Oct 2018–Mar 2020
18-Month
52.28"
(1,327.91mm)
43.68"
(1,109.47mm)
8.60"
(218.44mm)
126th Driest
Driest since:
1918
1st Wettest
Wettest to Date
2020
Apr 2018–Mar 2020
24-Month
70.32"
(1,786.13mm)
59.92"
(1,521.97mm)
10.40"
(264.16mm)
126th Driest
Driest since:
1955
1st Wettest
Wettest to Date
2020
Apr 2017–Mar 2020
36-Month
101.77"
(2,584.96mm)
89.87"
(2,282.70mm)
11.90"
(302.26mm)
125th Driest
Driest since:
1955
1st Wettest
Wettest to Date
2020
Apr 2016–Mar 2020
48-Month
134.38"
(3,413.25mm)
119.76"
(3,041.90mm)
14.62"
(371.35mm)
123rd Driest
Driest since:
1957
2nd Wettest
Wettest since:
2019
Apr 2015–Mar 2020
60-Month
170.16"
(4,322.06mm)
149.62"
(3,800.35mm)
20.54"
(521.71mm)
123rd Driest
Driest since:
1957
1st Wettest
Wettest to Date
2020

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