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 1918

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
August 1918
1-Month		3.44"
(87.38mm)		3.67"
(93.22mm)		-0.23"
(-5.84mm)		52nd Driest
Driest since:
1953
77th Wettest
Wettest since:
1915
Jul–Aug 1918
2-Month		6.20"
(157.48mm)		7.67"
(194.82mm)		-1.47"
(-37.34mm)		12th Driest
Driest since:
1930
117th Wettest
Wettest since:
1915
Jun–Aug 1918
3-Month		9.80"
(248.92mm)		11.92"
(302.77mm)		-2.12"
(-53.85mm)		15th Driest
Driest since:
1930
114th Wettest
Wettest since:
1958
May–Aug 1918
4-Month		14.52"
(368.81mm)		16.19"
(411.23mm)		-1.67"
(-42.42mm)		27th Driest
Driest since:
1936
102nd Wettest
Wettest since:
1915
Apr–Aug 1918
5-Month		19.35"
(491.49mm)		20.10"
(510.54mm)		-0.75"
(-19.05mm)		44th Driest
Driest since:
1930
85th Wettest
Wettest since:
2015
Mar–Aug 1918
6-Month		21.19"
(538.23mm)		23.91"
(607.31mm)		-2.72"
(-69.08mm)		26th Driest
Driest since:
1930
103rd Wettest
Wettest since:
2015
Feb–Aug 1918
7-Month		23.02"
(584.71mm)		26.58"
(675.13mm)		-3.56"
(-90.42mm)		14th Driest
Driest since:
1930
115th Wettest
Wettest since:
2019
Jan–Aug 1918
8-Month		26.63"
(676.40mm)		29.63"
(752.60mm)		-3.00"
(-76.20mm)		22nd Driest
Driest since:
1936
107th Wettest
Wettest since:
2019
Dec 1917–Aug 1918
9-Month		27.92"
(709.17mm)		32.72"
(831.09mm)		-4.80"
(-121.92mm)		15th Driest
Driest since:
1936
113th Wettest
Wettest since:
2019
Nov 1917–Aug 1918
10-Month		28.81"
(731.77mm)		35.86"
(910.84mm)		-7.05"
(-179.07mm)		7th Driest
Driest since:
1936
121st Wettest
Wettest since:
2019
Oct 1917–Aug 1918
11-Month		31.88"
(809.75mm)		38.78"
(985.01mm)		-6.90"
(-175.26mm)		10th Driest
Driest to Date
1936
118th Wettest
Wettest since:
2019
Sep 1917–Aug 1918
12-Month		34.44"
(874.78mm)		42.24"
(1,072.90mm)		-7.80"
(-198.12mm)		8th Driest
Driest to Date
1936
120th Wettest
Wettest since:
2019
Mar 1917–Aug 1918
18-Month		60.23"
(1,529.84mm)		66.13"
(1,679.70mm)		-5.90"
(-149.86mm)		18th Driest
Driest since:
1931
110th Wettest
Wettest since:
2019
Sep 1916–Aug 1918
24-Month		76.04"
(1,931.42mm)		84.47"
(2,145.54mm)		-8.43"
(-214.12mm)		11th Driest
Driest since:
1941
116th Wettest
Wettest since:
2020
Sep 1915–Aug 1918
36-Month		121.71"
(3,091.43mm)		126.74"
(3,219.20mm)		-5.03"
(-127.77mm)		29th Driest
Driest since:
1941
97th Wettest
Wettest since:
2020
Sep 1914–Aug 1918
48-Month		166.34"
(4,225.04mm)		168.98"
(4,292.09mm)		-2.64"
(-67.05mm)		42nd Driest
Driest since:
1956
83rd Wettest
Wettest since:
2022
Sep 1913–Aug 1918
60-Month		202.11"
(5,133.59mm)		211.20"
(5,364.48mm)		-9.09"
(-230.89mm)		21st Driest
Driest since:
1934
103rd Wettest
Wettest since:
2020

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