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 1964

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
October 1964
1-Month 		1.02"
(25.91mm)		 2.90"
(73.66mm)		 -1.88"
(-47.75mm)		 8th Driest
Driest since:
 1963
121st Wettest
Wettest since:
 1919
Sep–Oct 1964
2-Month 		4.33"
(109.98mm)		 6.37"
(161.80mm)		 -2.04"
(-51.82mm)		 14th Driest
Driest since:
 1897
115th Wettest
Wettest since:
 1926
Aug–Oct 1964
3-Month 		7.74"
(196.60mm)		 10.04"
(255.02mm)		 -2.30"
(-58.42mm)		 17th Driest
Driest since:
 1897
112th Wettest
Wettest since:
 1926
Jul–Oct 1964
4-Month 		11.38"
(289.05mm)		 14.04"
(356.62mm)		 -2.66"
(-67.57mm)		 11th Driest
Driest since:
 1953
118th Wettest
Wettest since:
 1926
Jun–Oct 1964
5-Month 		15.12"
(384.05mm)		 18.29"
(464.57mm)		 -3.17"
(-80.52mm)		 15th Driest
Driest since:
 1953
114th Wettest
Wettest since:
 1926
Ties: 1991
May–Oct 1964
6-Month 		17.57"
(446.28mm)		 22.56"
(573.02mm)		 -4.99"
(-126.74mm)		 10th Driest
Driest since:
 1930
119th Wettest
Wettest since:
 2009
Apr–Oct 1964
7-Month 		23.44"
(595.38mm)		 26.47"
(672.34mm)		 -3.03"
(-76.96mm)		 21st Driest
Driest since:
 1930
108th Wettest
Wettest since:
 2009
Mar–Oct 1964
8-Month 		29.89"
(759.21mm)		 30.28"
(769.11mm)		 -0.39"
(-9.90mm)		 54th Driest
Driest since:
 1930
75th Wettest
Wettest since:
 2009
Feb–Oct 1964
9-Month 		32.12"
(815.85mm)		 32.95"
(836.93mm)		 -0.83"
(-21.08mm)		 45th Driest
Driest since:
 1930
84th Wettest
Wettest since:
 2019
Jan–Oct 1964
10-Month 		34.33"
(871.98mm)		 36.00"
(914.40mm)		 -1.67"
(-42.42mm)		 38th Driest
Driest since:
 1930
91st Wettest
Wettest since:
 2019
Dec 1963–Oct 1964
11-Month 		35.57"
(903.48mm)		 39.09"
(992.89mm)		 -3.52"
(-89.41mm)		 20th Driest
Driest since:
 1930
108th Wettest
Wettest since:
 2019
Nov 1963–Oct 1964
12-Month 		38.23"
(971.04mm)		 42.23"
(1,072.64mm)		 -4.00"
(-101.60mm)		 20th Driest
Driest since:
 1963
108th Wettest
Wettest since:
 2019
May 1963–Oct 1964
18-Month 		54.71"
(1,389.63mm)		 64.79"
(1,645.67mm)		 -10.08"
(-256.04mm)		 7th Driest
Driest since:
 1931
121st Wettest
Wettest since:
 2019
Nov 1962–Oct 1964
24-Month 		70.11"
(1,780.79mm)		 84.46"
(2,145.28mm)		 -14.35"
(-364.49mm)		 2nd Driest
Driest since:
 1931
125th Wettest
Wettest since:
 2020
Nov 1961–Oct 1964
36-Month 		113.38"
(2,879.85mm)		 126.69"
(3,217.93mm)		 -13.31"
(-338.08mm)		 6th Driest
Driest since:
 1954
120th Wettest
Wettest since:
 2020
Nov 1960–Oct 1964
48-Month 		157.39"
(3,997.71mm)		 168.97"
(4,291.84mm)		 -11.58"
(-294.13mm)		 11th Driest
Driest since:
 1956
114th Wettest
Wettest since:
 2021
Nov 1959–Oct 1964
60-Month 		195.39"
(4,962.91mm)		 211.20"
(5,364.48mm)		 -15.81"
(-401.57mm)		 7th Driest
Driest since:
 1956
117th Wettest
Wettest since:
 2020

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