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 1900

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
December 1900
1-Month		1.66"
(42.16mm)		2.35"
(59.69mm)		-0.69"
(-17.53mm)		12th Driest
Driest since:
1930
117th Wettest
Wettest since:
2015
Ties: 1917, 1925
Nov–Dec 1900
2-Month		4.03"
(102.36mm)		4.58"
(116.33mm)		-0.55"
(-13.97mm)		34th Driest
Driest since:
1976
95th Wettest
Wettest since:
2015
Ties: 1950
Oct–Dec 1900
3-Month		6.78"
(172.21mm)		6.74"
(171.20mm)		0.04"
(1.01mm)		62nd Driest
Driest since:
1917
67th Wettest
Wettest to Date
2015
Sep–Dec 1900
4-Month		9.71"
(246.63mm)		9.23"
(234.44mm)		0.48"
(12.19mm)		86th Driest
Driest since:
1939
43rd Wettest
Wettest to Date
2018
Aug–Dec 1900
5-Month		12.13"
(308.10mm)		11.85"
(300.99mm)		0.28"
(7.11mm)		72nd Driest
Driest since:
1917
57th Wettest
Wettest to Date
2018
Jul–Dec 1900
6-Month		15.20"
(386.08mm)		14.62"
(371.35mm)		0.58"
(14.73mm)		81st Driest
Driest since:
1917
48th Wettest
Wettest to Date
2018
Ties: 1979
Jun–Dec 1900
7-Month		18.23"
(463.04mm)		17.55"
(445.77mm)		0.68"
(17.27mm)		77th Driest
Driest since:
1917
52nd Wettest
Wettest to Date
2018
Ties: 2002, 2003
May–Dec 1900
8-Month		20.68"
(525.27mm)		20.46"
(519.68mm)		0.22"
(5.59mm)		67th Driest
Driest since:
1917
62nd Wettest
Wettest since:
2015
Apr–Dec 1900
9-Month		24.09"
(611.89mm)		22.98"
(583.69mm)		1.11"
(28.20mm)		88th Driest
Driest since:
1956
41st Wettest
Wettest to Date
2015
Mar–Dec 1900
10-Month		26.37"
(669.80mm)		25.49"
(647.45mm)		0.88"
(22.35mm)		77th Driest
Driest since:
1956
52nd Wettest
Wettest to Date
2015
Ties: 1907
Feb–Dec 1900
11-Month		28.89"
(733.81mm)		27.62"
(701.55mm)		1.27"
(32.26mm)		87th Driest
Driest since:
1910
42nd Wettest
Wettest to Date
2018
Jan–Dec 1900
12-Month		30.63"
(778.00mm)		29.94"
(760.48mm)		0.69"
(17.52mm)		82nd Driest
Driest since:
1910
47th Wettest
Wettest to Date
1973
Ties: 1902, 1969
Jul 1899–Dec 1900
18-Month		44.14"
(1,121.16mm)		44.58"
(1,132.33mm)		-0.44"
(-11.17mm)		47th Driest
Driest since:
1954
81st Wettest
Wettest since:
2019
Ties: 1913
Jan 1899–Dec 1900
24-Month		59.34"
(1,507.24mm)		59.90"
(1,521.46mm)		-0.56"
(-14.22mm)		49th Driest
Driest since:
1931
79th Wettest
Wettest since:
2019
Ties: 1976
Jan 1898–Dec 1900
36-Month		88.91"
(2,258.31mm)		89.86"
(2,282.44mm)		-0.95"
(-24.13mm)		49th Driest
Driest since:
1956
78th Wettest
Wettest since:
2019
Jan 1897–Dec 1900
48-Month		118.61"
(3,012.69mm)		119.78"
(3,042.41mm)		-1.17"
(-29.72mm)		48th Driest
Driest since:
1956
78th Wettest
Wettest to Date
2019
Jan 1896–Dec 1900
60-Month		148.38"
(3,768.85mm)		149.68"
(3,801.87mm)		-1.30"
(-33.02mm)		53rd Driest
Driest since:
1956
72nd Wettest
Wettest to Date
2019

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