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, September 1912

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
September 1912
1-Month		3.14"
(79.76mm)		3.47"
(88.14mm)		-0.33"
(-8.38mm)		53rd Driest
Driest since:
1897
76th Wettest
Wettest since:
1926
Aug–Sep 1912
2-Month		7.49"
(190.25mm)		7.14"
(181.36mm)		0.35"
(8.89mm)		82nd Driest
Driest since:
1897
47th Wettest
Wettest since:
1926
Jul–Sep 1912
3-Month		12.30"
(312.42mm)		11.14"
(282.96mm)		1.16"
(29.46mm)		95th Driest
Driest since:
1953
34th Wettest
Wettest since:
1926
Jun–Sep 1912
4-Month		16.09"
(408.69mm)		15.39"
(390.91mm)		0.70"
(17.78mm)		70th Driest
Driest since:
1953
59th Wettest
Wettest since:
1915
May–Sep 1912
5-Month		20.00"
(508.00mm)		19.66"
(499.36mm)		0.34"
(8.64mm)		57th Driest
Driest since:
1930
72nd Wettest
Wettest since:
1915
Apr–Sep 1912
6-Month		26.04"
(661.42mm)		23.57"
(598.68mm)		2.47"
(62.74mm)		94th Driest
Driest since:
1930
35th Wettest
Wettest since:
2011
Mar–Sep 1912
7-Month		31.11"
(790.19mm)		27.38"
(695.45mm)		3.73"
(94.74mm)		107th Driest
Driest since:
1930
22nd Wettest
Wettest since:
1945
Feb–Sep 1912
8-Month		33.75"
(857.25mm)		30.05"
(763.27mm)		3.70"
(93.98mm)		104th Driest
Driest since:
1930
25th Wettest
Wettest since:
1945
Jan–Sep 1912
9-Month		35.86"
(910.84mm)		33.10"
(840.74mm)		2.76"
(70.10mm)		94th Driest
Driest since:
1930
35th Wettest
Wettest since:
1950
Ties: 1965
Dec 1911–Sep 1912
10-Month		40.00"
(1,016.00mm)		36.19"
(919.23mm)		3.81"
(96.77mm)		100th Driest
Driest since:
1930
28th Wettest
Wettest since:
1950
Nov 1911–Sep 1912
11-Month		43.36"
(1,101.34mm)		39.33"
(998.98mm)		4.03"
(102.36mm)		102nd Driest
Driest since:
1930
26th Wettest
Wettest since:
2019
Ties: 2003
Oct 1911–Sep 1912
12-Month		47.13"
(1,197.10mm)		42.25"
(1,073.15mm)		4.88"
(123.95mm)		105th Driest
Driest since:
1925
23rd Wettest
Wettest since:
2019
Apr 1911–Sep 1912
18-Month		70.95"
(1,802.13mm)		65.79"
(1,671.07mm)		5.16"
(131.06mm)		96th Driest
Driest since:
1931
32nd Wettest
Wettest to Date
2019
Oct 1910–Sep 1912
24-Month		86.24"
(2,190.50mm)		84.47"
(2,145.54mm)		1.77"
(44.96mm)		65th Driest
Driest since:
1941
62nd Wettest
Wettest since:
2020
Oct 1909–Sep 1912
36-Month		127.33"
(3,234.18mm)		126.72"
(3,218.69mm)		0.61"
(15.49mm)		61st Driest
Driest since:
1941
65th Wettest
Wettest since:
2020
Oct 1908–Sep 1912
48-Month		170.93"
(4,341.62mm)		168.99"
(4,292.35mm)		1.94"
(49.27mm)		64th Driest
Driest since:
1956
61st Wettest
Wettest since:
2021
Oct 1907–Sep 1912
60-Month		213.23"
(5,416.04mm)		211.21"
(5,364.73mm)		2.02"
(51.31mm)		66th Driest
Driest since:
1956
58th Wettest
Wettest since:
2020

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