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 1987

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
March 1987
1-Month 		2.67"
(67.82mm)		 2.51"
(63.75mm)		 0.16"
(4.07mm)		 87th Driest
Driest since:
 1910
42nd Wettest
Wettest since:
 1973
Ties: 1946
Feb–Mar 1987
2-Month 		5.00"
(127.00mm)		 4.64"
(117.86mm)		 0.36"
(9.14mm)		 98th Driest
Driest since:
 1910
31st Wettest
Wettest since:
 1998
Ties: 1939
Jan–Mar 1987
3-Month 		7.17"
(182.12mm)		 6.96"
(176.78mm)		 0.21"
(5.34mm)		 78th Driest
Driest since:
 1910
51st Wettest
Wettest since:
 1998
Dec 1986–Mar 1987
4-Month 		9.17"
(232.92mm)		 9.30"
(236.22mm)		 -0.13"
(-3.30mm)		 60th Driest
Driest since:
 1981
68th Wettest
Wettest since:
 1983, 1998
Nov 1986–Mar 1987
5-Month 		12.11"
(307.59mm)		 11.53"
(292.86mm)		 0.58"
(14.73mm)		 89th Driest
Driest since:
 1977
39th Wettest
Wettest since:
 1983
Oct 1986–Mar 1987
6-Month 		14.92"
(378.97mm)		 13.70"
(347.98mm)		 1.22"
(30.99mm)		 99th Driest
Driest since:
 1918
29th Wettest
Wettest since:
 1983
Ties: 1999
Sep 1986–Mar 1987
7-Month 		18.51"
(470.15mm)		 16.19"
(411.23mm)		 2.32"
(58.92mm)		 118th Driest
Driest since:
 1918
10th Wettest
Wettest since:
 2019
Aug 1986–Mar 1987
8-Month 		21.33"
(541.78mm)		 18.82"
(478.03mm)		 2.51"
(63.75mm)		 116th Driest
Driest since:
 1918
12th Wettest
Wettest since:
 2019
Jul 1986–Mar 1987
9-Month 		24.08"
(611.63mm)		 21.60"
(548.64mm)		 2.48"
(62.99mm)		 114th Driest
Driest since:
 1918
14th Wettest
Wettest since:
 2019
Jun 1986–Mar 1987
10-Month 		27.11"
(688.59mm)		 24.53"
(623.06mm)		 2.58"
(65.53mm)		 113th Driest
Driest since:
 1918
15th Wettest
Wettest since:
 2019
Ties: 1907
May 1986–Mar 1987
11-Month 		30.06"
(763.52mm)		 27.43"
(696.72mm)		 2.63"
(66.80mm)		 112th Driest
Driest since:
 1918
16th Wettest
Wettest since:
 2019
Apr 1986–Mar 1987
12-Month 		32.30"
(820.42mm)		 29.96"
(760.98mm)		 2.34"
(59.44mm)		 108th Driest
Driest since:
 1918
20th Wettest
Wettest since:
 2016
Oct 1985–Mar 1987
18-Month 		46.73"
(1,186.94mm)		 43.68"
(1,109.47mm)		 3.05"
(77.47mm)		 105th Driest
Driest since:
 1918
22nd Wettest
Wettest since:
 2020
Apr 1985–Mar 1987
24-Month 		62.52"
(1,588.01mm)		 59.92"
(1,521.97mm)		 2.60"
(66.04mm)		 94th Driest
Driest since:
 1955
33rd Wettest
Wettest since:
 2020
Apr 1984–Mar 1987
36-Month 		93.71"
(2,380.23mm)		 89.87"
(2,282.70mm)		 3.84"
(97.53mm)		 96th Driest
Driest since:
 1955
30th Wettest
Wettest since:
 2020
Apr 1983–Mar 1987
48-Month 		126.22"
(3,205.99mm)		 119.76"
(3,041.90mm)		 6.46"
(164.09mm)		 105th Driest
Driest since:
 1957
20th Wettest
Wettest since:
 2019
Apr 1982–Mar 1987
60-Month 		160.96"
(4,088.38mm)		 149.62"
(3,800.35mm)		 11.34"
(288.03mm)		 116th Driest
Driest since:
 1957
8th Wettest
Wettest to Date
 2020

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