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, September 2019

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
September 2019
1-Month 		2.29"
(58.17mm)		 3.47"
(88.14mm)		 -1.18"
(-29.97mm)		 18th Driest
Driest since:
 1897
111th Wettest
Wettest since:
 1926
Aug–Sep 2019
2-Month 		6.59"
(167.39mm)		 7.14"
(181.36mm)		 -0.55"
(-13.97mm)		 53rd Driest
Driest since:
 1897
76th Wettest
Wettest since:
 1926
Jul–Sep 2019
3-Month 		11.03"
(280.16mm)		 11.14"
(282.96mm)		 -0.11"
(-2.80mm)		 61st Driest
Driest since:
 1953
68th Wettest
Wettest since:
 1926
Jun–Sep 2019
4-Month 		17.19"
(436.63mm)		 15.39"
(390.91mm)		 1.80"
(45.72mm)		 94th Driest
Driest since:
 1953
35th Wettest
Wettest since:
 1915
May–Sep 2019
5-Month 		23.85"
(605.79mm)		 19.66"
(499.36mm)		 4.19"
(106.43mm)		 118th Driest
Driest since:
 1930
11th Wettest
Wettest since:
 1915
Apr–Sep 2019
6-Month 		28.43"
(722.12mm)		 23.57"
(598.68mm)		 4.86"
(123.44mm)		 117th Driest
Driest since:
 1930
12th Wettest
Wettest since:
 2011
Mar–Sep 2019
7-Month 		32.33"
(821.18mm)		 27.38"
(695.45mm)		 4.95"
(125.73mm)		 117th Driest
Driest since:
 1930
12th Wettest
Wettest since:
 1945
Feb–Sep 2019
8-Month 		38.14"
(968.76mm)		 30.05"
(763.27mm)		 8.09"
(205.49mm)		 125th Driest
Driest since:
 1930
4th Wettest
Wettest since:
 1945
Jan–Sep 2019
9-Month 		41.99"
(1,066.55mm)		 33.10"
(840.74mm)		 8.89"
(225.81mm)		 127th Driest
Driest since:
 1930
2nd Wettest
Wettest since:
 1950
Dec 2018–Sep 2019
10-Month 		46.35"
(1,177.29mm)		 36.19"
(919.23mm)		 10.16"
(258.06mm)		 126th Driest
Driest since:
 1930
2nd Wettest
Wettest since:
 1950
Nov 2018–Sep 2019
11-Month 		50.58"
(1,284.73mm)		 39.33"
(998.98mm)		 11.25"
(285.75mm)		 127th Driest
Driest since:
 1930
1st Wettest
Wettest to Date
 2019
Oct 2018–Sep 2019
12-Month 		54.19"
(1,376.43mm)		 42.25"
(1,073.15mm)		 11.94"
(303.28mm)		 127th Driest
Driest since:
 1925
1st Wettest
Wettest to Date
 2019
Apr 2018–Sep 2019
18-Month 		82.23"
(2,088.64mm)		 65.79"
(1,671.07mm)		 16.44"
(417.57mm)		 127th Driest
Driest since:
 1931
1st Wettest
Wettest to Date
 2019
Oct 2017–Sep 2019
24-Month 		104.13"
(2,644.90mm)		 84.47"
(2,145.54mm)		 19.66"
(499.36mm)		 125th Driest
Driest since:
 1941
2nd Wettest
Wettest to Date
 2020
Oct 2016–Sep 2019
36-Month 		148.00"
(3,759.20mm)		 126.72"
(3,218.69mm)		 21.28"
(540.51mm)		 122nd Driest
Driest since:
 1941
4th Wettest
Wettest since:
 2020
Oct 2015–Sep 2019
48-Month 		196.94"
(5,002.28mm)		 168.99"
(4,292.35mm)		 27.95"
(709.93mm)		 121st Driest
Driest since:
 1956
4th Wettest
Wettest to Date
 2021
Oct 2014–Sep 2019
60-Month 		245.07"
(6,224.78mm)		 211.21"
(5,364.73mm)		 33.86"
(860.05mm)		 120th Driest
Driest since:
 1956
4th Wettest
Wettest to Date
 2020

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