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 1966

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 1966
1-Month
2.54"
(64.52mm)
2.35"
(59.69mm)
0.19"
(4.83mm)
75th Driest
Driest since:
1930
53rd Wettest
Wettest since:
2015
Nov–Dec 1966
2-Month
4.55"
(115.57mm)
4.58"
(116.33mm)
-0.03"
(-0.76mm)
58th Driest
Driest since:
1976
70th Wettest
Wettest since:
2015
Oct–Dec 1966
3-Month
6.22"
(157.99mm)
6.74"
(171.20mm)
-0.52"
(-13.21mm)
38th Driest
Driest since:
1917
90th Wettest
Wettest since:
2015
Sep–Dec 1966
4-Month
8.66"
(219.96mm)
9.23"
(234.44mm)
-0.57"
(-14.48mm)
38th Driest
Driest since:
1939
90th Wettest
Wettest since:
2018
Aug–Dec 1966
5-Month
11.77"
(298.96mm)
11.85"
(300.99mm)
-0.08"
(-2.03mm)
56th Driest
Driest since:
1917
72nd Wettest
Wettest since:
2018
Ties: 1905
Jul–Dec 1966
6-Month
14.18"
(360.17mm)
14.62"
(371.35mm)
-0.44"
(-11.18mm)
43rd Driest
Driest since:
1917
85th Wettest
Wettest since:
2018
Jun–Dec 1966
7-Month
16.42"
(417.07mm)
17.55"
(445.77mm)
-1.13"
(-28.70mm)
29th Driest
Driest since:
1917
99th Wettest
Wettest since:
2018
May–Dec 1966
8-Month
18.66"
(473.96mm)
20.46"
(519.68mm)
-1.80"
(-45.72mm)
22nd Driest
Driest since:
1917
106th Wettest
Wettest since:
2015
Apr–Dec 1966
9-Month
21.15"
(537.21mm)
22.98"
(583.69mm)
-1.83"
(-46.48mm)
24th Driest
Driest since:
1956
104th Wettest
Wettest since:
2015
Mar–Dec 1966
10-Month
22.76"
(578.10mm)
25.49"
(647.45mm)
-2.73"
(-69.35mm)
14th Driest
Driest since:
1956
114th Wettest
Wettest since:
2015
Feb–Dec 1966
11-Month
25.10"
(637.54mm)
27.62"
(701.55mm)
-2.52"
(-64.01mm)
17th Driest
Driest since:
1910
111th Wettest
Wettest since:
2018
Jan–Dec 1966
12-Month
27.46"
(697.48mm)
29.94"
(760.48mm)
-2.48"
(-63.00mm)
16th Driest
Driest since:
1910
112th Wettest
Wettest since:
1973
Jul 1965–Dec 1966
18-Month
42.13"
(1,070.10mm)
44.58"
(1,132.33mm)
-2.45"
(-62.23mm)
23rd Driest
Driest since:
1954
104th Wettest
Wettest since:
2019
Jan 1965–Dec 1966
24-Month
57.26"
(1,454.40mm)
59.90"
(1,521.46mm)
-2.64"
(-67.06mm)
25th Driest
Driest since:
1931
102nd Wettest
Wettest since:
2019
Jan 1964–Dec 1966
36-Month
87.52"
(2,223.01mm)
89.86"
(2,282.44mm)
-2.34"
(-59.43mm)
36th Driest
Driest since:
1956
90th Wettest
Wettest since:
2019
Jan 1963–Dec 1966
48-Month
113.22"
(2,875.79mm)
119.78"
(3,042.41mm)
-6.56"
(-166.62mm)
11th Driest
Driest since:
1956
114th Wettest
Wettest since:
2019
Jan 1962–Dec 1966
60-Month
141.82"
(3,602.23mm)
149.68"
(3,801.87mm)
-7.86"
(-199.64mm)
9th Driest
Driest since:
1956
115th Wettest
Wettest since:
2019

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