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 1977

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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 1977
1-Month
3.10"
(78.74mm)
2.51"
(63.75mm)
0.59"
(14.99mm)
115th Driest
Driest since:
1910
14th Wettest
Wettest since:
1973
Ties: 1904
Feb–Mar 1977
2-Month
4.33"
(109.98mm)
4.64"
(117.86mm)
-0.31"
(-7.88mm)
45th Driest
Driest since:
1910
84th Wettest
Wettest since:
1998
Jan–Mar 1977
3-Month
5.91"
(150.11mm)
6.96"
(176.78mm)
-1.05"
(-26.67mm)
16th Driest
Driest since:
1910
113th Wettest
Wettest since:
1998
Dec 1976–Mar 1977
4-Month
7.27"
(184.66mm)
9.30"
(236.22mm)
-2.03"
(-51.56mm)
3rd Driest
Driest since:
1981
125th Wettest
Wettest since:
1983, 1998
Nov 1976–Mar 1977
5-Month
8.38"
(212.85mm)
11.53"
(292.86mm)
-3.15"
(-80.01mm)
1st Driest
Driest since:
1977
127th Wettest
Wettest since:
1983
Oct 1976–Mar 1977
6-Month
10.82"
(274.83mm)
13.70"
(347.98mm)
-2.88"
(-73.15mm)
3rd Driest
Driest since:
1918
125th Wettest
Wettest since:
1983
Sep 1976–Mar 1977
7-Month
13.27"
(337.06mm)
16.19"
(411.23mm)
-2.92"
(-74.17mm)
2nd Driest
Driest since:
1918
126th Wettest
Wettest since:
2019
Ties: 1940
Aug 1976–Mar 1977
8-Month
15.27"
(387.86mm)
18.82"
(478.03mm)
-3.55"
(-90.17mm)
2nd Driest
Driest since:
1918
126th Wettest
Wettest since:
2019
Jul 1976–Mar 1977
9-Month
18.01"
(457.45mm)
21.60"
(548.64mm)
-3.59"
(-91.19mm)
4th Driest
Driest since:
1918
124th Wettest
Wettest since:
2019
Jun 1976–Mar 1977
10-Month
20.78"
(527.81mm)
24.53"
(623.06mm)
-3.75"
(-95.25mm)
7th Driest
Driest since:
1918
121st Wettest
Wettest since:
2019
May 1976–Mar 1977
11-Month
23.71"
(602.23mm)
27.43"
(696.72mm)
-3.72"
(-94.49mm)
6th Driest
Driest since:
1918
122nd Wettest
Wettest since:
2019
Apr 1976–Mar 1977
12-Month
26.00"
(660.40mm)
29.96"
(760.98mm)
-3.96"
(-100.58mm)
7th Driest
Driest since:
1918
121st Wettest
Wettest since:
2016
Oct 1975–Mar 1977
18-Month
38.91"
(988.31mm)
43.68"
(1,109.47mm)
-4.77"
(-121.16mm)
10th Driest
Driest since:
1918
117th Wettest
Wettest since:
2020
Apr 1975–Mar 1977
24-Month
56.63"
(1,438.40mm)
59.92"
(1,521.97mm)
-3.29"
(-83.57mm)
23rd Driest
Driest since:
1955
104th Wettest
Wettest since:
2020
Apr 1974–Mar 1977
36-Month
88.41"
(2,245.61mm)
89.87"
(2,282.70mm)
-1.46"
(-37.09mm)
47th Driest
Driest since:
1955
79th Wettest
Wettest since:
2020
Apr 1973–Mar 1977
48-Month
122.39"
(3,108.71mm)
119.76"
(3,041.90mm)
2.63"
(66.81mm)
83rd Driest
Driest since:
1957
42nd Wettest
Wettest since:
2019
Apr 1972–Mar 1977
60-Month
156.27"
(3,969.26mm)
149.62"
(3,800.35mm)
6.65"
(168.91mm)
103rd Driest
Driest since:
1957
21st Wettest
Wettest since:
2020

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