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 1989

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
September 1989
1-Month		4.51"
(114.55mm)		3.47"
(88.14mm)		1.04"
(26.41mm)		107th Driest
Driest since:
1897
22nd Wettest
Wettest since:
1926
Aug–Sep 1989
2-Month		8.67"
(220.22mm)		7.14"
(181.36mm)		1.53"
(38.86mm)		110th Driest
Driest since:
1897
19th Wettest
Wettest since:
1926
Jul–Sep 1989
3-Month		13.18"
(334.77mm)		11.14"
(282.96mm)		2.04"
(51.81mm)		111th Driest
Driest since:
1953
18th Wettest
Wettest since:
1926
Ties: 1911
Jun–Sep 1989
4-Month		18.45"
(468.63mm)		15.39"
(390.91mm)		3.06"
(77.72mm)		116th Driest
Driest since:
1953
13th Wettest
Wettest since:
1915
Ties: 1945
May–Sep 1989
5-Month		23.16"
(588.26mm)		19.66"
(499.36mm)		3.50"
(88.90mm)		112th Driest
Driest since:
1930
17th Wettest
Wettest since:
1915
Apr–Sep 1989
6-Month		26.37"
(669.80mm)		23.57"
(598.68mm)		2.80"
(71.12mm)		97th Driest
Driest since:
1930
32nd Wettest
Wettest since:
2011
Mar–Sep 1989
7-Month		30.68"
(779.27mm)		27.38"
(695.45mm)		3.30"
(83.82mm)		98th Driest
Driest since:
1930
31st Wettest
Wettest since:
1945
Feb–Sep 1989
8-Month		35.16"
(893.06mm)		30.05"
(763.27mm)		5.11"
(129.79mm)		115th Driest
Driest since:
1930
14th Wettest
Wettest since:
1945
Jan–Sep 1989
9-Month		38.25"
(971.55mm)		33.10"
(840.74mm)		5.15"
(130.81mm)		113th Driest
Driest since:
1930
16th Wettest
Wettest since:
1950
Dec 1988–Sep 1989
10-Month		41.11"
(1,044.19mm)		36.19"
(919.23mm)		4.92"
(124.96mm)		109th Driest
Driest since:
1930
19th Wettest
Wettest since:
1950
Nov 1988–Sep 1989
11-Month		46.63"
(1,184.40mm)		39.33"
(998.98mm)		7.30"
(185.42mm)		115th Driest
Driest since:
1930
13th Wettest
Wettest since:
2019
Oct 1988–Sep 1989
12-Month		49.06"
(1,246.12mm)		42.25"
(1,073.15mm)		6.81"
(172.97mm)		118th Driest
Driest since:
1925
10th Wettest
Wettest since:
2019
Apr 1988–Sep 1989
18-Month		66.20"
(1,681.48mm)		65.79"
(1,671.07mm)		0.41"
(10.41mm)		56th Driest
Driest since:
1931
72nd Wettest
Wettest since:
2019
Oct 1987–Sep 1989
24-Month		84.33"
(2,141.98mm)		84.47"
(2,145.54mm)		-0.14"
(-3.56mm)		51st Driest
Driest since:
1941
76th Wettest
Wettest since:
2020
Oct 1986–Sep 1989
36-Month		122.77"
(3,118.36mm)		126.72"
(3,218.69mm)		-3.95"
(-100.33mm)		31st Driest
Driest since:
1941
95th Wettest
Wettest since:
2020
Oct 1985–Sep 1989
48-Month		166.68"
(4,233.67mm)		168.99"
(4,292.35mm)		-2.31"
(-58.68mm)		43rd Driest
Driest since:
1956
82nd Wettest
Wettest since:
2021
Oct 1984–Sep 1989
60-Month		212.67"
(5,401.82mm)		211.21"
(5,364.73mm)		1.46"
(37.09mm)		60th Driest
Driest since:
1956
64th Wettest
Wettest since:
2020

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