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, February 1930

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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
February 1930
1-Month
1.74"
(44.20mm)
2.13"
(54.10mm)
-0.39"
(-9.90mm)
24th Driest
Driest since:
1947
105th Wettest
Wettest since:
1998
Ties: 2015
Jan–Feb 1930
2-Month
4.32"
(109.73mm)
4.45"
(113.03mm)
-0.13"
(-3.30mm)
58th Driest
Driest since:
1977
71st Wettest
Wettest since:
1998
Dec 1929–Feb 1930
3-Month
6.53"
(165.86mm)
6.79"
(172.47mm)
-0.26"
(-6.61mm)
47th Driest
Driest since:
1977
81st Wettest
Wettest since:
2019
Ties: 1954
Nov 1929–Feb 1930
4-Month
8.49"
(215.65mm)
9.02"
(229.11mm)
-0.53"
(-13.46mm)
42nd Driest
Driest since:
1977
86th Wettest
Wettest since:
2019
Oct 1929–Feb 1930
5-Month
11.09"
(281.69mm)
11.19"
(284.23mm)
-0.10"
(-2.54mm)
65th Driest
Driest since:
1977
63rd Wettest
Wettest since:
2019
Ties: 1956
Sep 1929–Feb 1930
6-Month
13.84"
(351.54mm)
13.68"
(347.47mm)
0.16"
(4.07mm)
72nd Driest
Driest since:
1977
56th Wettest
Wettest since:
2019
Ties: 1947, 1966
Aug 1929–Feb 1930
7-Month
15.64"
(397.26mm)
16.31"
(414.27mm)
-0.67"
(-17.01mm)
36th Driest
Driest since:
1977
92nd Wettest
Wettest since:
2019
Ties: 2014
Jul 1929–Feb 1930
8-Month
18.21"
(462.53mm)
19.09"
(484.89mm)
-0.88"
(-22.36mm)
34th Driest
Driest since:
1977
94th Wettest
Wettest since:
2019
Jun 1929–Feb 1930
9-Month
20.84"
(529.34mm)
22.02"
(559.31mm)
-1.18"
(-29.97mm)
33rd Driest
Driest since:
1918, 1931, 1977
95th Wettest
Wettest since:
2019
Ties: 2002
May 1929–Feb 1930
10-Month
24.35"
(618.49mm)
24.92"
(632.97mm)
-0.57"
(-14.48mm)
44th Driest
Driest since:
1918
84th Wettest
Wettest since:
2019
Apr 1929–Feb 1930
11-Month
27.28"
(692.91mm)
27.45"
(697.23mm)
-0.17"
(-4.32mm)
48th Driest
Driest since:
1931
80th Wettest
Wettest since:
2019
Ties: 1947
Mar 1929–Feb 1930
12-Month
30.09"
(764.29mm)
29.96"
(760.98mm)
0.13"
(3.31mm)
60th Driest
Driest since:
1931
68th Wettest
Wettest since:
2019
Sep 1928–Feb 1930
18-Month
42.70"
(1,084.58mm)
43.65"
(1,108.71mm)
-0.95"
(-24.13mm)
40th Driest
Driest since:
1918
87th Wettest
Wettest since:
2020
Mar 1928–Feb 1930
24-Month
60.85"
(1,545.59mm)
59.92"
(1,521.97mm)
0.93"
(23.62mm)
75th Driest
Driest since:
1935
52nd Wettest
Wettest since:
2020
Mar 1927–Feb 1930
36-Month
91.54"
(2,325.12mm)
89.87"
(2,282.70mm)
1.67"
(42.42mm)
76th Driest
Driest since:
1957
50th Wettest
Wettest since:
2020
Mar 1926–Feb 1930
48-Month
122.56"
(3,113.02mm)
119.77"
(3,042.16mm)
2.79"
(70.86mm)
85th Driest
Driest since:
1957
40th Wettest
Wettest since:
2019
Mar 1925–Feb 1930
60-Month
149.86"
(3,806.44mm)
149.63"
(3,800.60mm)
0.23"
(5.84mm)
63rd Driest
Driest since:
1957
61st Wettest
Wettest since:
2020

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