Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. 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 2008

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
September 2008
1-Month
4.43"
(112.52mm)
3.47"
(88.14mm)
0.96"
(24.38mm)
104th Driest
Driest since:
1897
25th Wettest
Wettest since:
1926
Ties: 1925
Aug–Sep 2008
2-Month
6.74"
(171.20mm)
7.14"
(181.36mm)
-0.40"
(-10.16mm)
57th Driest
Driest since:
1897
72nd Wettest
Wettest since:
1926
Ties: 1968
Jul–Sep 2008
3-Month
11.75"
(298.45mm)
11.14"
(282.96mm)
0.61"
(15.49mm)
81st Driest
Driest since:
1953
48th Wettest
Wettest since:
1926
Jun–Sep 2008
4-Month
17.15"
(435.61mm)
15.39"
(390.91mm)
1.76"
(44.70mm)
93rd Driest
Driest since:
1953
36th Wettest
Wettest since:
1915
May–Sep 2008
5-Month
22.38"
(568.45mm)
19.66"
(499.36mm)
2.72"
(69.09mm)
102nd Driest
Driest since:
1930
27th Wettest
Wettest since:
1915
Apr–Sep 2008
6-Month
27.18"
(690.37mm)
23.57"
(598.68mm)
3.61"
(91.69mm)
108th Driest
Driest since:
1930
21st Wettest
Wettest since:
2011
Ties: 1896
Mar–Sep 2008
7-Month
33.28"
(845.31mm)
27.38"
(695.45mm)
5.90"
(149.86mm)
123rd Driest
Driest since:
1930
6th Wettest
Wettest since:
1945
Feb–Sep 2008
8-Month
37.72"
(958.09mm)
30.05"
(763.27mm)
7.67"
(194.82mm)
124th Driest
Driest since:
1930
5th Wettest
Wettest since:
1945
Jan–Sep 2008
9-Month
40.31"
(1,023.87mm)
33.10"
(840.74mm)
7.21"
(183.13mm)
123rd Driest
Driest since:
1930
6th Wettest
Wettest since:
1950
Ties: 1898
Dec 2007–Sep 2008
10-Month
44.98"
(1,142.49mm)
36.19"
(919.23mm)
8.79"
(223.26mm)
125th Driest
Driest since:
1930
3rd Wettest
Wettest since:
1950
Nov 2007–Sep 2008
11-Month
47.45"
(1,205.23mm)
39.33"
(998.98mm)
8.12"
(206.25mm)
122nd Driest
Driest since:
1930
6th Wettest
Wettest since:
2019
Oct 2007–Sep 2008
12-Month
51.50"
(1,308.10mm)
42.25"
(1,073.15mm)
9.25"
(234.95mm)
122nd Driest
Driest since:
1925
6th Wettest
Wettest since:
2019
Apr 2007–Sep 2008
18-Month
71.02"
(1,803.91mm)
65.79"
(1,671.07mm)
5.23"
(132.84mm)
97th Driest
Driest since:
1931
31st Wettest
Wettest since:
2019
Oct 2006–Sep 2008
24-Month
91.02"
(2,311.91mm)
84.47"
(2,145.54mm)
6.55"
(166.37mm)
97th Driest
Driest since:
1941
30th Wettest
Wettest since:
2020
Oct 2005–Sep 2008
36-Month
131.58"
(3,342.13mm)
126.72"
(3,218.69mm)
4.86"
(123.44mm)
81st Driest
Driest since:
1941
45th Wettest
Wettest since:
2020
Oct 2004–Sep 2008
48-Month
175.81"
(4,465.57mm)
168.99"
(4,292.35mm)
6.82"
(173.22mm)
86th Driest
Driest since:
1956
39th Wettest
Wettest since:
2021
Oct 2003–Sep 2008
60-Month
221.42"
(5,624.07mm)
211.21"
(5,364.73mm)
10.21"
(259.34mm)
91st Driest
Driest since:
1956
33rd Wettest
Wettest since:
2020

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