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 1900

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
January 1900
1-Month
1.74"
(44.20mm)
2.31"
(58.67mm)
-0.57"
(-14.47mm)
18th Driest
Driest since:
1981
111th Wettest
Wettest since:
1916
Dec 1899–Jan 1900
2-Month
4.10"
(104.14mm)
4.66"
(118.36mm)
-0.56"
(-14.22mm)
30th Driest
Driest since:
1981
98th Wettest
Wettest since:
1932
Ties: 1929, 2011
Nov 1899–Jan 1900
3-Month
6.09"
(154.69mm)
6.89"
(175.01mm)
-0.80"
(-20.32mm)
25th Driest
Driest since:
1977
103rd Wettest
Wettest since:
2016
Oct 1899–Jan 1900
4-Month
8.50"
(215.90mm)
9.06"
(230.12mm)
-0.56"
(-14.22mm)
42nd Driest
Driest since:
1981
86th Wettest
Wettest since:
2016
Sep 1899–Jan 1900
5-Month
10.04"
(255.02mm)
11.55"
(293.37mm)
-1.51"
(-38.35mm)
22nd Driest
Driest since:
1940
106th Wettest
Wettest since:
2019
Ties: 1961
Aug 1899–Jan 1900
6-Month
12.30"
(312.42mm)
14.17"
(359.92mm)
-1.87"
(-47.50mm)
16th Driest
Driest since:
1940
112th Wettest
Wettest since:
2019
Jul 1899–Jan 1900
7-Month
15.25"
(387.35mm)
16.96"
(430.78mm)
-1.71"
(-43.43mm)
18th Driest
Driest since:
1940
110th Wettest
Wettest since:
2019
Jun 1899–Jan 1900
8-Month
18.22"
(462.79mm)
19.88"
(504.95mm)
-1.66"
(-42.16mm)
21st Driest
Driest since:
1981
107th Wettest
Wettest since:
2019
May 1899–Jan 1900
9-Month
20.96"
(532.38mm)
22.79"
(578.87mm)
-1.83"
(-46.49mm)
24th Driest
Driest since:
1918
104th Wettest
Wettest since:
2016
Apr 1899–Jan 1900
10-Month
22.74"
(577.60mm)
25.32"
(643.13mm)
-2.58"
(-65.53mm)
16th Driest
Driest since:
1940
112th Wettest
Wettest since:
2016
Mar 1899–Jan 1900
11-Month
25.56"
(649.22mm)
27.83"
(706.88mm)
-2.27"
(-57.66mm)
23rd Driest
Driest since:
1957
105th Wettest
Wettest since:
1974
Ties: 2000
Feb 1899–Jan 1900
12-Month
27.84"
(707.14mm)
29.96"
(760.98mm)
-2.12"
(-53.84mm)
23rd Driest
Driest since:
1931
105th Wettest
Wettest since:
1974
Aug 1898–Jan 1900
18-Month
42.32"
(1,074.93mm)
44.14"
(1,121.16mm)
-1.82"
(-46.23mm)
34th Driest
Driest since:
1955
93rd Wettest
Wettest since:
2020
Feb 1898–Jan 1900
24-Month
57.59"
(1,462.79mm)
59.93"
(1,522.22mm)
-2.34"
(-59.43mm)
31st Driest
Driest since:
1918
96th Wettest
Wettest since:
2020
Feb 1897–Jan 1900
36-Month
87.33"
(2,218.18mm)
89.86"
(2,282.44mm)
-2.53"
(-64.26mm)
35th Driest
Driest since:
1957
91st Wettest
Wettest since:
2020
Feb 1896–Jan 1900
48-Month
117.09"
(2,974.09mm)
119.76"
(3,041.90mm)
-2.67"
(-67.81mm)
40th Driest
Driest since:
1957
85th Wettest
Wettest to Date
2020
Feb 1895–Jan 1900
60-Month
143.72"
(3,650.49mm)
149.63"
(3,800.60mm)
-5.91"
(-150.11mm)
16th Driest
Driest since:
1957
108th Wettest
Wettest to Date
2020

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