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 2017

View Period (Months):
Download: csv json xml
  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
December 2017
1-Month
1.89"
(48.01mm)
3.11"
(78.99mm)
-1.22"
(-30.98mm)
20th Driest
Driest since:
1958
109th Wettest
Wettest since:
1990
Nov–Dec 2017
2-Month
4.56"
(115.82mm)
6.23"
(158.24mm)
-1.67"
(-42.42mm)
20th Driest
Driest since:
1976
109th Wettest
Wettest since:
2015
Oct–Dec 2017
3-Month
9.08"
(230.63mm)
9.13"
(231.90mm)
-0.05"
(-1.27mm)
59th Driest
Driest since:
1963
70th Wettest
Wettest since:
1990
Sep–Dec 2017
4-Month
11.25"
(285.75mm)
12.60"
(320.04mm)
-1.35"
(-34.29mm)
44th Driest
Driest since:
1963
85th Wettest
Wettest since:
1926
Aug–Dec 2017
5-Month
14.91"
(378.71mm)
16.27"
(413.26mm)
-1.36"
(-34.55mm)
44th Driest
Driest since:
1953
85th Wettest
Wettest since:
1926
Jul–Dec 2017
6-Month
19.90"
(505.46mm)
20.27"
(514.86mm)
-0.37"
(-9.40mm)
51st Driest
Driest since:
1953
78th Wettest
Wettest since:
1926
Jun–Dec 2017
7-Month
24.18"
(614.17mm)
24.52"
(622.81mm)
-0.34"
(-8.64mm)
53rd Driest
Driest since:
1953
76th Wettest
Wettest since:
2015
May–Dec 2017
8-Month
30.05"
(763.27mm)
28.79"
(731.27mm)
1.26"
(32.00mm)
67th Driest
Driest since:
1953
62nd Wettest
Wettest since:
2015
Apr–Dec 2017
9-Month
36.37"
(923.80mm)
32.70"
(830.58mm)
3.67"
(93.22mm)
98th Driest
Driest since:
1930
31st Wettest
Wettest since:
2015
Mar–Dec 2017
10-Month
40.68"
(1,033.27mm)
36.51"
(927.35mm)
4.17"
(105.92mm)
98th Driest
Driest since:
1930
31st Wettest
Wettest since:
2011
Feb–Dec 2017
11-Month
42.09"
(1,069.09mm)
39.19"
(995.43mm)
2.90"
(73.66mm)
88th Driest
Driest since:
1930
41st Wettest
Wettest since:
2011
Jan–Dec 2017
12-Month
45.36"
(1,152.14mm)
42.23"
(1,072.64mm)
3.13"
(79.50mm)
92nd Driest
Driest since:
1930
37th Wettest
Wettest since:
2019
Jul 2016–Dec 2017
18-Month
67.77"
(1,721.36mm)
62.51"
(1,587.75mm)
5.26"
(133.61mm)
99th Driest
Driest since:
1953
29th Wettest
Wettest since:
2019
Jan 2016–Dec 2017
24-Month
87.82"
(2,230.63mm)
84.45"
(2,145.03mm)
3.37"
(85.60mm)
83rd Driest
Driest since:
1953
45th Wettest
Wettest since:
2019
Jan 2015–Dec 2017
36-Month
139.84"
(3,551.94mm)
126.69"
(3,217.93mm)
13.15"
(334.01mm)
112th Driest
Driest since:
1954
15th Wettest
Wettest since:
2020
Jan 2014–Dec 2017
48-Month
183.11"
(4,650.99mm)
168.95"
(4,291.33mm)
14.16"
(359.66mm)
109th Driest
Driest since:
1955
17th Wettest
Wettest since:
2021
Jan 2013–Dec 2017
60-Month
231.47"
(5,879.34mm)
211.20"
(5,364.48mm)
20.27"
(514.86mm)
116th Driest
Driest since:
1956
9th Wettest
Wettest since:
2021

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