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, December 1897

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Wettest/Driest
Since
Record
December 1897
1-Month
2.56"
(65.02mm)
2.35"
(59.69mm)
0.21"
(5.33mm)
76th Driest
Driest since:
1930
53rd Wettest
Wettest to Date
2015
Nov–Dec 1897
2-Month
4.85"
(123.19mm)
4.58"
(116.33mm)
0.27"
(6.86mm)
83rd Driest
Driest since:
1976
46th Wettest
Wettest to Date
2015
Oct–Dec 1897
3-Month
6.68"
(169.67mm)
6.74"
(171.20mm)
-0.06"
(-1.53mm)
55th Driest
Driest since:
1917
74th Wettest
Wettest since:
2015
Sep–Dec 1897
4-Month
8.25"
(209.55mm)
9.23"
(234.44mm)
-0.98"
(-24.89mm)
28th Driest
Driest since:
1939
101st Wettest
Wettest since:
2018
Aug–Dec 1897
5-Month
10.55"
(267.97mm)
11.85"
(300.99mm)
-1.30"
(-33.02mm)
23rd Driest
Driest since:
1917
106th Wettest
Wettest since:
2018
Jul–Dec 1897
6-Month
13.48"
(342.39mm)
14.62"
(371.35mm)
-1.14"
(-28.96mm)
26th Driest
Driest since:
1917
103rd Wettest
Wettest since:
2018
Jun–Dec 1897
7-Month
16.36"
(415.54mm)
17.55"
(445.77mm)
-1.19"
(-30.23mm)
27th Driest
Driest since:
1917
102nd Wettest
Wettest since:
2018
May–Dec 1897
8-Month
18.48"
(469.39mm)
20.46"
(519.68mm)
-1.98"
(-50.29mm)
19th Driest
Driest to Date
1917
110th Wettest
Wettest since:
2015
Apr–Dec 1897
9-Month
20.90"
(530.86mm)
22.98"
(583.69mm)
-2.08"
(-52.83mm)
20th Driest
Driest since:
1956
109th Wettest
Wettest since:
2015
Mar–Dec 1897
10-Month
24.52"
(622.81mm)
25.49"
(647.45mm)
-0.97"
(-24.64mm)
35th Driest
Driest since:
1956
94th Wettest
Wettest since:
2015
Feb–Dec 1897
11-Month
27.31"
(693.67mm)
27.62"
(701.55mm)
-0.31"
(-7.88mm)
52nd Driest
Driest since:
1910
77th Wettest
Wettest since:
2018
Jan–Dec 1897
12-Month
29.70"
(754.38mm)
29.94"
(760.48mm)
-0.24"
(-6.10mm)
48th Driest
Driest since:
1910
81st Wettest
Wettest since:
1973
Ties: 1970
Jul 1896–Dec 1897
18-Month
44.42"
(1,128.27mm)
44.58"
(1,132.33mm)
-0.16"
(-4.06mm)
55th Driest
Driest since:
1954
73rd Wettest
Wettest to Date
2019
Jan 1896–Dec 1897
24-Month
59.47"
(1,510.54mm)
59.90"
(1,521.46mm)
-0.43"
(-10.92mm)
52nd Driest
Driest since:
1931
76th Wettest
Wettest to Date
2019
Jan 1895–Dec 1897
36-Month
87.02"
(2,210.31mm)
89.86"
(2,282.44mm)
-2.84"
(-72.13mm)
32nd Driest
Driest to Date
1956
95th Wettest
Wettest to Date
2019

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