Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. 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, October 1909

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
October 1909
1-Month 		2.66"
(67.56mm)		 2.90"
(73.66mm)		 -0.24"
(-6.10mm)		 62nd Driest
Driest since:
 1963
67th Wettest
Wettest since:
 1919
Sep–Oct 1909
2-Month 		6.02"
(152.91mm)		 6.37"
(161.80mm)		 -0.35"
(-8.89mm)		 53rd Driest
Driest since:
 1897
76th Wettest
Wettest since:
 1926
Ties: 2013
Aug–Oct 1909
3-Month 		8.32"
(211.33mm)		 10.04"
(255.02mm)		 -1.72"
(-43.69mm)		 21st Driest
Driest since:
 1897
108th Wettest
Wettest since:
 1926
Jul–Oct 1909
4-Month 		13.45"
(341.63mm)		 14.04"
(356.62mm)		 -0.59"
(-14.99mm)		 44th Driest
Driest since:
 1953
85th Wettest
Wettest since:
 1926
Jun–Oct 1909
5-Month 		18.82"
(478.03mm)		 18.29"
(464.57mm)		 0.53"
(13.46mm)		 68th Driest
Driest since:
 1953
61st Wettest
Wettest since:
 1926
May–Oct 1909
6-Month 		23.66"
(600.96mm)		 22.56"
(573.02mm)		 1.10"
(27.94mm)		 73rd Driest
Driest since:
 1930
56th Wettest
Wettest since:
 2009
Apr–Oct 1909
7-Month 		28.87"
(733.30mm)		 26.47"
(672.34mm)		 2.40"
(60.96mm)		 87th Driest
Driest since:
 1930
42nd Wettest
Wettest since:
 2009
Mar–Oct 1909
8-Month 		32.39"
(822.71mm)		 30.28"
(769.11mm)		 2.11"
(53.60mm)		 83rd Driest
Driest since:
 1930
46th Wettest
Wettest since:
 2009
Feb–Oct 1909
9-Month 		37.52"
(953.01mm)		 32.95"
(836.93mm)		 4.57"
(116.08mm)		 107th Driest
Driest since:
 1930
22nd Wettest
Wettest since:
 2019
Jan–Oct 1909
10-Month 		40.34"
(1,024.64mm)		 36.00"
(914.40mm)		 4.34"
(110.24mm)		 103rd Driest
Driest since:
 1930
26th Wettest
Wettest since:
 2019
Dec 1908–Oct 1909
11-Month 		42.40"
(1,076.96mm)		 39.09"
(992.89mm)		 3.31"
(84.07mm)		 91st Driest
Driest since:
 1930
37th Wettest
Wettest since:
 2019
Nov 1908–Oct 1909
12-Month 		45.02"
(1,143.51mm)		 42.23"
(1,072.64mm)		 2.79"
(70.87mm)		 87th Driest
Driest since:
 1963
41st Wettest
Wettest since:
 2019
May 1908–Oct 1909
18-Month 		64.04"
(1,626.62mm)		 64.79"
(1,645.67mm)		 -0.75"
(-19.05mm)		 43rd Driest
Driest since:
 1931
85th Wettest
Wettest since:
 2019
Nov 1907–Oct 1909
24-Month 		86.10"
(2,186.94mm)		 84.46"
(2,145.28mm)		 1.64"
(41.66mm)		 64th Driest
Driest since:
 1931
63rd Wettest
Wettest since:
 2020
Nov 1906–Oct 1909
36-Month 		133.12"
(3,381.25mm)		 126.69"
(3,217.93mm)		 6.43"
(163.32mm)		 89th Driest
Driest since:
 1954
37th Wettest
Wettest since:
 2020
Ties: 1947
Nov 1905–Oct 1909
48-Month 		172.92"
(4,392.17mm)		 168.97"
(4,291.84mm)		 3.95"
(100.33mm)		 76th Driest
Driest since:
 1956
49th Wettest
Wettest since:
 2021
Nov 1904–Oct 1909
60-Month 		215.92"
(5,484.37mm)		 211.20"
(5,364.48mm)		 4.72"
(119.89mm)		 74th Driest
Driest since:
 1956
50th Wettest
Wettest to Date
 2020

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