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, August 1940

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
August 1940
1-Month		4.44"
(112.78mm)		3.67"
(93.22mm)		0.77"
(19.56mm)		102nd Driest
Driest since:
1953
27th Wettest
Wettest since:
1915
Jul–Aug 1940
2-Month		6.76"
(171.70mm)		7.67"
(194.82mm)		-0.91"
(-23.12mm)		24th Driest
Driest since:
1930
105th Wettest
Wettest since:
1915
Ties: 1916
Jun–Aug 1940
3-Month		10.89"
(276.61mm)		11.92"
(302.77mm)		-1.03"
(-26.16mm)		35th Driest
Driest since:
1930
94th Wettest
Wettest since:
1958
May–Aug 1940
4-Month		14.37"
(365.00mm)		16.19"
(411.23mm)		-1.82"
(-46.23mm)		25th Driest
Driest since:
1936
104th Wettest
Wettest since:
1915
Apr–Aug 1940
5-Month		19.07"
(484.38mm)		20.10"
(510.54mm)		-1.03"
(-26.16mm)		39th Driest
Driest since:
1930
90th Wettest
Wettest since:
2015
Mar–Aug 1940
6-Month		22.31"
(566.67mm)		23.91"
(607.31mm)		-1.60"
(-40.64mm)		35th Driest
Driest since:
1930
94th Wettest
Wettest since:
2015
Feb–Aug 1940
7-Month		25.25"
(641.35mm)		26.58"
(675.13mm)		-1.33"
(-33.78mm)		41st Driest
Driest since:
1930
88th Wettest
Wettest since:
2019
Jan–Aug 1940
8-Month		26.82"
(681.23mm)		29.63"
(752.60mm)		-2.81"
(-71.37mm)		25th Driest
Driest since:
1936
104th Wettest
Wettest since:
2019
Dec 1939–Aug 1940
9-Month		28.64"
(727.46mm)		32.72"
(831.09mm)		-4.08"
(-103.63mm)		21st Driest
Driest since:
1936
107th Wettest
Wettest since:
2019
Nov 1939–Aug 1940
10-Month		30.22"
(767.59mm)		35.86"
(910.84mm)		-5.64"
(-143.25mm)		15th Driest
Driest since:
1936
113th Wettest
Wettest since:
2019
Oct 1939–Aug 1940
11-Month		32.43"
(823.72mm)		38.78"
(985.01mm)		-6.35"
(-161.29mm)		12th Driest
Driest since:
1936
116th Wettest
Wettest since:
2019
Sep 1939–Aug 1940
12-Month		33.61"
(853.69mm)		42.24"
(1,072.90mm)		-8.63"
(-219.21mm)		6th Driest
Driest since:
1936
122nd Wettest
Wettest since:
2019
Mar 1939–Aug 1940
18-Month		58.82"
(1,494.03mm)		66.13"
(1,679.70mm)		-7.31"
(-185.67mm)		12th Driest
Driest since:
1931
116th Wettest
Wettest since:
2019
Sep 1938–Aug 1940
24-Month		77.19"
(1,960.63mm)		84.47"
(2,145.54mm)		-7.28"
(-184.91mm)		16th Driest
Driest since:
1941
111th Wettest
Wettest since:
2020
Sep 1937–Aug 1940
36-Month		121.62"
(3,089.15mm)		126.74"
(3,219.20mm)		-5.12"
(-130.05mm)		27th Driest
Driest since:
1941
99th Wettest
Wettest since:
2020
Sep 1936–Aug 1940
48-Month		170.08"
(4,320.03mm)		168.98"
(4,292.09mm)		1.10"
(27.94mm)		57th Driest
Driest since:
1956
68th Wettest
Wettest since:
2022
Sep 1935–Aug 1940
60-Month		201.41"
(5,115.81mm)		211.20"
(5,364.48mm)		-9.79"
(-248.67mm)		17th Driest
Driest since:
1934
107th Wettest
Wettest since:
2020

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