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 2021

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 2021
1-Month
2.09"
(53.09mm)
2.31"
(58.67mm)
-0.22"
(-5.58mm)
45th Driest
Driest since:
1981
84th Wettest
Wettest since:
1916
Ties: 1970, 2012
Dec 2020–Jan 2021
2-Month
4.14"
(105.16mm)
4.66"
(118.36mm)
-0.52"
(-13.20mm)
36th Driest
Driest since:
1981
92nd Wettest
Wettest since:
1932
Nov 2020–Jan 2021
3-Month
6.08"
(154.43mm)
6.89"
(175.01mm)
-0.81"
(-20.58mm)
24th Driest
Driest since:
1977
104th Wettest
Wettest since:
2016
Oct 2020–Jan 2021
4-Month
8.26"
(209.80mm)
9.06"
(230.12mm)
-0.80"
(-20.32mm)
30th Driest
Driest since:
1981
98th Wettest
Wettest since:
2016
Sep 2020–Jan 2021
5-Month
10.70"
(271.78mm)
11.55"
(293.37mm)
-0.85"
(-21.59mm)
33rd Driest
Driest since:
1940
95th Wettest
Wettest since:
2019
Aug 2020–Jan 2021
6-Month
13.12"
(333.25mm)
14.17"
(359.92mm)
-1.05"
(-26.67mm)
30th Driest
Driest since:
1940
98th Wettest
Wettest since:
2019
Jul 2020–Jan 2021
7-Month
16.06"
(407.92mm)
16.96"
(430.78mm)
-0.90"
(-22.86mm)
33rd Driest
Driest since:
1940
95th Wettest
Wettest since:
2019
Jun 2020–Jan 2021
8-Month
18.79"
(477.27mm)
19.88"
(504.95mm)
-1.09"
(-27.68mm)
31st Driest
Driest since:
1981
97th Wettest
Wettest since:
2019
Ties: 1898
May 2020–Jan 2021
9-Month
21.88"
(555.75mm)
22.79"
(578.87mm)
-0.91"
(-23.12mm)
37th Driest
Driest since:
1918
91st Wettest
Wettest since:
2016
Apr 2020–Jan 2021
10-Month
24.40"
(619.76mm)
25.32"
(643.13mm)
-0.92"
(-23.37mm)
34th Driest
Driest since:
1940
94th Wettest
Wettest since:
2016
Ties: 1923, 2002
Mar 2020–Jan 2021
11-Month
27.26"
(692.40mm)
27.83"
(706.88mm)
-0.57"
(-14.48mm)
42nd Driest
Driest since:
1957
86th Wettest
Wettest since:
1974
Feb 2020–Jan 2021
12-Month
29.71"
(754.63mm)
29.96"
(760.98mm)
-0.25"
(-6.35mm)
48th Driest
Driest since:
1931
80th Wettest
Wettest since:
1974
Ties: 1970
Aug 2019–Jan 2021
18-Month
45.40"
(1,153.16mm)
44.14"
(1,121.16mm)
1.26"
(32.00mm)
83rd Driest
Driest since:
1955
44th Wettest
Wettest since:
2020
Feb 2019–Jan 2021
24-Month
64.73"
(1,644.14mm)
59.93"
(1,522.22mm)
4.80"
(121.92mm)
111th Driest
Driest since:
1918
16th Wettest
Wettest since:
2020
Feb 2018–Jan 2021
36-Month
100.09"
(2,542.29mm)
89.86"
(2,282.44mm)
10.23"
(259.85mm)
124th Driest
Driest since:
1957
2nd Wettest
Wettest since:
2020
Feb 2017–Jan 2021
48-Month
131.01"
(3,327.65mm)
119.76"
(3,041.90mm)
11.25"
(285.75mm)
121st Driest
Driest since:
1957
4th Wettest
Wettest since:
2020
Feb 2016–Jan 2021
60-Month
163.63"
(4,156.20mm)
149.63"
(3,800.60mm)
14.00"
(355.60mm)
120th Driest
Driest since:
1957
4th Wettest
Wettest since:
2020

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