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, January 2015

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
January 2015
1-Month
1.83"
(46.48mm)
2.31"
(58.67mm)
-0.48"
(-12.19mm)
25th Driest
Driest since:
1981
104th Wettest
Wettest since:
1916
Dec 2014–Jan 2015
2-Month
4.41"
(112.01mm)
4.66"
(118.36mm)
-0.25"
(-6.35mm)
53rd Driest
Driest since:
1981
75th Wettest
Wettest since:
1932
Nov 2014–Jan 2015
3-Month
6.54"
(166.12mm)
6.89"
(175.01mm)
-0.35"
(-8.89mm)
45th Driest
Driest since:
1977
83rd Wettest
Wettest since:
2016
Ties: 1945
Oct 2014–Jan 2015
4-Month
8.96"
(227.58mm)
9.06"
(230.12mm)
-0.10"
(-2.54mm)
54th Driest
Driest since:
1981
74th Wettest
Wettest since:
2016
Ties: 2012
Sep 2014–Jan 2015
5-Month
11.60"
(294.64mm)
11.55"
(293.37mm)
0.05"
(1.27mm)
65th Driest
Driest since:
1940
63rd Wettest
Wettest since:
2019
Ties: 1941
Aug 2014–Jan 2015
6-Month
14.73"
(374.14mm)
14.17"
(359.92mm)
0.56"
(14.22mm)
81st Driest
Driest since:
1940
47th Wettest
Wettest since:
2019
Ties: 1949
Jul 2014–Jan 2015
7-Month
17.33"
(440.18mm)
16.96"
(430.78mm)
0.37"
(9.40mm)
75th Driest
Driest since:
1940
53rd Wettest
Wettest since:
2019
Jun 2014–Jan 2015
8-Month
21.00"
(533.40mm)
19.88"
(504.95mm)
1.12"
(28.45mm)
95th Driest
Driest since:
1981
33rd Wettest
Wettest since:
2019
May 2014–Jan 2015
9-Month
23.81"
(604.77mm)
22.79"
(578.87mm)
1.02"
(25.90mm)
91st Driest
Driest since:
1918
37th Wettest
Wettest since:
2016
Ties: 1927
Apr 2014–Jan 2015
10-Month
26.69"
(677.93mm)
25.32"
(643.13mm)
1.37"
(34.80mm)
96th Driest
Driest since:
1940
32nd Wettest
Wettest since:
2016
Ties: 1980
Mar 2014–Jan 2015
11-Month
29.06"
(738.12mm)
27.83"
(706.88mm)
1.23"
(31.24mm)
87th Driest
Driest since:
1957
41st Wettest
Wettest since:
1974
Feb 2014–Jan 2015
12-Month
31.31"
(795.27mm)
29.96"
(760.98mm)
1.35"
(34.29mm)
88th Driest
Driest since:
1931
40th Wettest
Wettest since:
1974
Aug 2013–Jan 2015
18-Month
44.70"
(1,135.38mm)
44.14"
(1,121.16mm)
0.56"
(14.22mm)
70th Driest
Driest since:
1955
57th Wettest
Wettest since:
2020
Ties: 2009
Feb 2013–Jan 2015
24-Month
61.37"
(1,558.80mm)
59.93"
(1,522.22mm)
1.44"
(36.58mm)
82nd Driest
Driest since:
1918
45th Wettest
Wettest since:
2020
Feb 2012–Jan 2015
36-Month
89.18"
(2,265.17mm)
89.86"
(2,282.44mm)
-0.68"
(-17.27mm)
57th Driest
Driest since:
1957
69th Wettest
Wettest since:
2020
Feb 2011–Jan 2015
48-Month
119.72"
(3,040.89mm)
119.76"
(3,041.90mm)
-0.04"
(-1.01mm)
58th Driest
Driest since:
1957
67th Wettest
Wettest since:
2020
Feb 2010–Jan 2015
60-Month
150.12"
(3,813.05mm)
149.63"
(3,800.60mm)
0.49"
(12.45mm)
62nd Driest
Driest since:
1957
62nd Wettest
Wettest since:
2020

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