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 1949

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
December 1949
1-Month
2.22"
(56.39mm)
2.35"
(59.69mm)
-0.13"
(-3.30mm)
49th Driest
Driest since:
1930
79th Wettest
Wettest since:
2015
Ties: 1959, 1970
Nov–Dec 1949
2-Month
3.41"
(86.61mm)
4.58"
(116.33mm)
-1.17"
(-29.72mm)
13th Driest
Driest since:
1976
115th Wettest
Wettest since:
2015
Oct–Dec 1949
3-Month
6.21"
(157.73mm)
6.74"
(171.20mm)
-0.53"
(-13.47mm)
37th Driest
Driest since:
1917
91st Wettest
Wettest since:
2015
Sep–Dec 1949
4-Month
8.43"
(214.12mm)
9.23"
(234.44mm)
-0.80"
(-20.32mm)
32nd Driest
Driest since:
1939
96th Wettest
Wettest since:
2018
Aug–Dec 1949
5-Month
10.92"
(277.37mm)
11.85"
(300.99mm)
-0.93"
(-23.62mm)
30th Driest
Driest since:
1917
98th Wettest
Wettest since:
2018
Jul–Dec 1949
6-Month
14.00"
(355.60mm)
14.62"
(371.35mm)
-0.62"
(-15.75mm)
38th Driest
Driest since:
1917
90th Wettest
Wettest since:
2018
Jun–Dec 1949
7-Month
17.20"
(436.88mm)
17.55"
(445.77mm)
-0.35"
(-8.89mm)
46th Driest
Driest since:
1917
82nd Wettest
Wettest since:
2018
May–Dec 1949
8-Month
20.18"
(512.57mm)
20.46"
(519.68mm)
-0.28"
(-7.11mm)
49th Driest
Driest since:
1917
79th Wettest
Wettest since:
2015
Apr–Dec 1949
9-Month
22.27"
(565.66mm)
22.98"
(583.69mm)
-0.71"
(-18.03mm)
39th Driest
Driest since:
1956
89th Wettest
Wettest since:
2015
Mar–Dec 1949
10-Month
24.74"
(628.40mm)
25.49"
(647.45mm)
-0.75"
(-19.05mm)
38th Driest
Driest since:
1956
90th Wettest
Wettest since:
2015
Feb–Dec 1949
11-Month
27.14"
(689.36mm)
27.62"
(701.55mm)
-0.48"
(-12.19mm)
46th Driest
Driest since:
1910
82nd Wettest
Wettest since:
2018
Ties: 1898
Jan–Dec 1949
12-Month
30.30"
(769.62mm)
29.94"
(760.48mm)
0.36"
(9.14mm)
64th Driest
Driest since:
1910
64th Wettest
Wettest since:
1973
Jul 1948–Dec 1949
18-Month
44.93"
(1,141.22mm)
44.58"
(1,132.33mm)
0.35"
(8.89mm)
66th Driest
Driest since:
1954
61st Wettest
Wettest since:
2019
Jan 1948–Dec 1949
24-Month
60.99"
(1,549.15mm)
59.90"
(1,521.46mm)
1.09"
(27.69mm)
77th Driest
Driest since:
1931
50th Wettest
Wettest since:
2019
Ties: 1909
Jan 1947–Dec 1949
36-Month
90.34"
(2,294.64mm)
89.86"
(2,282.44mm)
0.48"
(12.20mm)
65th Driest
Driest since:
1956
61st Wettest
Wettest since:
2019
Jan 1946–Dec 1949
48-Month
121.43"
(3,084.32mm)
119.78"
(3,042.41mm)
1.65"
(41.91mm)
74th Driest
Driest since:
1956
51st Wettest
Wettest since:
2019
Jan 1945–Dec 1949
60-Month
154.46"
(3,923.28mm)
149.68"
(3,801.87mm)
4.78"
(121.41mm)
94th Driest
Driest since:
1956
30th Wettest
Wettest since:
2019

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