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 2011

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
February 2011
1-Month
1.98"
(50.29mm)
2.13"
(54.10mm)
-0.15"
(-3.81mm)
50th Driest
Driest since:
1947
79th Wettest
Wettest since:
1998
Jan–Feb 2011
2-Month
3.63"
(92.20mm)
4.45"
(113.03mm)
-0.82"
(-20.83mm)
19th Driest
Driest since:
1977
110th Wettest
Wettest since:
1998
Dec 2010–Feb 2011
3-Month
6.08"
(154.43mm)
6.79"
(172.47mm)
-0.71"
(-18.04mm)
26th Driest
Driest since:
1977
102nd Wettest
Wettest since:
2019
Nov 2010–Feb 2011
4-Month
8.30"
(210.82mm)
9.02"
(229.11mm)
-0.72"
(-18.29mm)
35th Driest
Driest since:
1977
93rd Wettest
Wettest since:
2019
Oct 2010–Feb 2011
5-Month
10.27"
(260.86mm)
11.19"
(284.23mm)
-0.92"
(-23.37mm)
28th Driest
Driest since:
1977
100th Wettest
Wettest since:
2019
Sep 2010–Feb 2011
6-Month
13.05"
(331.47mm)
13.68"
(347.47mm)
-0.63"
(-16.00mm)
42nd Driest
Driest since:
1977
86th Wettest
Wettest since:
2019
Aug 2010–Feb 2011
7-Month
15.56"
(395.22mm)
16.31"
(414.27mm)
-0.75"
(-19.05mm)
32nd Driest
Driest since:
1977
96th Wettest
Wettest since:
2019
Ties: 1970
Jul 2010–Feb 2011
8-Month
18.88"
(479.55mm)
19.09"
(484.89mm)
-0.21"
(-5.34mm)
53rd Driest
Driest since:
1977
75th Wettest
Wettest since:
2019
Jun 2010–Feb 2011
9-Month
22.37"
(568.20mm)
22.02"
(559.31mm)
0.35"
(8.89mm)
70th Driest
Driest since:
1918, 1931, 1977
58th Wettest
Wettest since:
2019
May 2010–Feb 2011
10-Month
25.69"
(652.53mm)
24.92"
(632.97mm)
0.77"
(19.56mm)
79th Driest
Driest since:
1918
49th Wettest
Wettest since:
2019
Apr 2010–Feb 2011
11-Month
28.07"
(712.98mm)
27.45"
(697.23mm)
0.62"
(15.75mm)
72nd Driest
Driest since:
1931
56th Wettest
Wettest since:
2019
Mar 2010–Feb 2011
12-Month
30.37"
(771.40mm)
29.96"
(760.98mm)
0.41"
(10.42mm)
63rd Driest
Driest since:
1931
65th Wettest
Wettest since:
2019
Sep 2009–Feb 2011
18-Month
46.54"
(1,182.12mm)
43.65"
(1,108.71mm)
2.89"
(73.41mm)
104th Driest
Driest since:
1918
23rd Wettest
Wettest since:
2020
Mar 2009–Feb 2011
24-Month
64.15"
(1,629.41mm)
59.92"
(1,521.97mm)
4.23"
(107.44mm)
108th Driest
Driest since:
1935
19th Wettest
Wettest since:
2020
Mar 2008–Feb 2011
36-Month
93.86"
(2,384.04mm)
89.87"
(2,282.70mm)
3.99"
(101.34mm)
98th Driest
Driest since:
1957
28th Wettest
Wettest since:
2020
Mar 2007–Feb 2011
48-Month
123.74"
(3,143.00mm)
119.77"
(3,042.16mm)
3.97"
(100.84mm)
96th Driest
Driest since:
1957
29th Wettest
Wettest since:
2019
Ties: 2007
Mar 2006–Feb 2011
60-Month
153.41"
(3,896.61mm)
149.63"
(3,800.60mm)
3.78"
(96.01mm)
85th Driest
Driest since:
1957
39th Wettest
Wettest since:
2020

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