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, August 2022

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
August 2022
1-Month 		4.25"
(107.95mm)		 3.67"
(93.22mm)		 0.58"
(14.73mm)		 95th Driest
Driest since:
 1953
34th Wettest
Wettest since:
 1915
Jul–Aug 2022
2-Month 		9.70"
(246.38mm)		 7.67"
(194.82mm)		 2.03"
(51.56mm)		 119th Driest
Driest since:
 1930
10th Wettest
Wettest since:
 1915
Jun–Aug 2022
3-Month 		12.66"
(321.56mm)		 11.92"
(302.77mm)		 0.74"
(18.79mm)		 79th Driest
Driest since:
 1930
50th Wettest
Wettest since:
 1958
May–Aug 2022
4-Month 		17.81"
(452.37mm)		 16.19"
(411.23mm)		 1.62"
(41.14mm)		 86th Driest
Driest since:
 1936
43rd Wettest
Wettest since:
 1915
Apr–Aug 2022
5-Month 		21.71"
(551.43mm)		 20.10"
(510.54mm)		 1.61"
(40.89mm)		 85th Driest
Driest since:
 1930
44th Wettest
Wettest since:
 2015
Mar–Aug 2022
6-Month 		25.59"
(649.99mm)		 23.91"
(607.31mm)		 1.68"
(42.68mm)		 80th Driest
Driest since:
 1930
49th Wettest
Wettest since:
 2015
Feb–Aug 2022
7-Month 		30.32"
(770.13mm)		 26.58"
(675.13mm)		 3.74"
(95.00mm)		 102nd Driest
Driest since:
 1930
27th Wettest
Wettest since:
 2019
Jan–Aug 2022
8-Month 		33.29"
(845.57mm)		 29.63"
(752.60mm)		 3.66"
(92.97mm)		 102nd Driest
Driest since:
 1936
27th Wettest
Wettest since:
 2019
Ties: 1949
Dec 2021–Aug 2022
9-Month 		36.59"
(929.39mm)		 32.72"
(831.09mm)		 3.87"
(98.30mm)		 101st Driest
Driest since:
 1936
27th Wettest
Wettest since:
 2019
Nov 2021–Aug 2022
10-Month 		37.95"
(963.93mm)		 35.86"
(910.84mm)		 2.09"
(53.09mm)		 80th Driest
Driest since:
 1936
48th Wettest
Wettest since:
 2019
Oct 2021–Aug 2022
11-Month 		43.25"
(1,098.55mm)		 38.78"
(985.01mm)		 4.47"
(113.54mm)		 102nd Driest
Driest since:
 1936
26th Wettest
Wettest since:
 2019
Sep 2021–Aug 2022
12-Month 		46.72"
(1,186.69mm)		 42.24"
(1,072.90mm)		 4.48"
(113.79mm)		 100th Driest
Driest since:
 1936
28th Wettest
Wettest since:
 2019
Mar 2021–Aug 2022
18-Month 		74.10"
(1,882.14mm)		 66.13"
(1,679.70mm)		 7.97"
(202.44mm)		 112th Driest
Driest since:
 1931
16th Wettest
Wettest since:
 2019
Sep 2020–Aug 2022
24-Month 		92.18"
(2,341.37mm)		 84.47"
(2,145.54mm)		 7.71"
(195.83mm)		 100th Driest
Driest since:
 1941
27th Wettest
Wettest since:
 2020
Sep 2019–Aug 2022
36-Month 		143.26"
(3,638.80mm)		 126.74"
(3,219.20mm)		 16.52"
(419.60mm)		 116th Driest
Driest since:
 1941
10th Wettest
Wettest since:
 2020
Sep 2018–Aug 2022
48-Month 		201.08"
(5,107.43mm)		 168.98"
(4,292.09mm)		 32.10"
(815.34mm)		 124th Driest
Driest since:
 1956
1st Wettest
Wettest to Date
 2022
Sep 2017–Aug 2022
60-Month 		247.27"
(6,280.66mm)		 211.19"
(5,364.23mm)		 36.08"
(916.43mm)		 122nd Driest
Driest since:
 1934
2nd Wettest
Wettest since:
 2020

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