Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Ohio Valley Climate Region

Precipitation Rankings, December 1971

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 1971
1-Month
4.61"
(117.09mm)
3.11"
(78.99mm)
1.50"
(38.10mm)
117th Driest
Driest since:
1958
11th Wettest
Wettest since:
1990
Nov–Dec 1971
2-Month
6.58"
(167.13mm)
6.23"
(158.24mm)
0.35"
(8.89mm)
75th Driest
Driest since:
1976
53rd Wettest
Wettest since:
2015
Oct–Dec 1971
3-Month
8.66"
(219.96mm)
9.13"
(231.90mm)
-0.47"
(-11.94mm)
48th Driest
Driest since:
1963
80th Wettest
Wettest since:
1990
Ties: 1995
Sep–Dec 1971
4-Month
12.62"
(320.55mm)
12.60"
(320.04mm)
0.02"
(0.51mm)
60th Driest
Driest since:
1963
68th Wettest
Wettest since:
1926
Aug–Dec 1971
5-Month
15.43"
(391.92mm)
16.27"
(413.26mm)
-0.84"
(-21.34mm)
49th Driest
Driest since:
1953
79th Wettest
Wettest since:
1926
Jul–Dec 1971
6-Month
20.47"
(519.94mm)
20.27"
(514.86mm)
0.20"
(5.08mm)
58th Driest
Driest since:
1953
70th Wettest
Wettest since:
1926
Jun–Dec 1971
7-Month
23.99"
(609.35mm)
24.52"
(622.81mm)
-0.53"
(-13.46mm)
51st Driest
Driest since:
1953
77th Wettest
Wettest since:
2015
May–Dec 1971
8-Month
28.35"
(720.09mm)
28.79"
(731.27mm)
-0.44"
(-11.18mm)
49th Driest
Driest since:
1953
79th Wettest
Wettest since:
2015
Apr–Dec 1971
9-Month
30.19"
(766.83mm)
32.70"
(830.58mm)
-2.51"
(-63.75mm)
33rd Driest
Driest since:
1930
95th Wettest
Wettest since:
2015
Mar–Dec 1971
10-Month
32.15"
(816.61mm)
36.51"
(927.35mm)
-4.36"
(-110.74mm)
19th Driest
Driest since:
1930
109th Wettest
Wettest since:
2011
Feb–Dec 1971
11-Month
35.90"
(911.86mm)
39.19"
(995.43mm)
-3.29"
(-83.57mm)
28th Driest
Driest since:
1930
100th Wettest
Wettest since:
2011
Jan–Dec 1971
12-Month
38.31"
(973.07mm)
42.23"
(1,072.64mm)
-3.92"
(-99.57mm)
22nd Driest
Driest since:
1930
106th Wettest
Wettest since:
2019
Jul 1970–Dec 1971
18-Month
60.14"
(1,527.56mm)
62.51"
(1,587.75mm)
-2.37"
(-60.19mm)
32nd Driest
Driest since:
1953
95th Wettest
Wettest since:
2019
Jan 1970–Dec 1971
24-Month
81.53"
(2,070.86mm)
84.45"
(2,145.03mm)
-2.92"
(-74.17mm)
31st Driest
Driest since:
1953
96th Wettest
Wettest since:
2019
Jan 1969–Dec 1971
36-Month
123.82"
(3,145.03mm)
126.69"
(3,217.93mm)
-2.87"
(-72.90mm)
39th Driest
Driest since:
1954
87th Wettest
Wettest since:
2020
Jan 1968–Dec 1971
48-Month
164.43"
(4,176.52mm)
168.95"
(4,291.33mm)
-4.52"
(-114.81mm)
30th Driest
Driest since:
1955
95th Wettest
Wettest since:
2021
Jan 1967–Dec 1971
60-Month
207.77"
(5,277.36mm)
211.20"
(5,364.48mm)
-3.43"
(-87.12mm)
36th Driest
Driest since:
1956
88th Wettest
Wettest since:
2021
Ties: 1980

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