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):
Download: csv json xml
  • Record Driest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • 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

Citing This Page