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 2007

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 2007
1-Month
2.44"
(61.98mm)
3.47"
(88.14mm)
-1.03"
(-26.16mm)
28th Driest
Driest since:
1897
101st Wettest
Wettest since:
1926
Aug–Sep 2007
2-Month
5.93"
(150.62mm)
7.14"
(181.36mm)
-1.21"
(-30.74mm)
28th Driest
Driest since:
1897
101st Wettest
Wettest since:
1926
Jul–Sep 2007
3-Month
9.36"
(237.74mm)
11.14"
(282.96mm)
-1.78"
(-45.22mm)
19th Driest
Driest since:
1953
110th Wettest
Wettest since:
1926
Jun–Sep 2007
4-Month
13.07"
(331.98mm)
15.39"
(390.91mm)
-2.32"
(-58.93mm)
19th Driest
Driest since:
1953
110th Wettest
Wettest since:
1915
May–Sep 2007
5-Month
15.72"
(399.29mm)
19.66"
(499.36mm)
-3.94"
(-100.07mm)
11th Driest
Driest since:
1930
118th Wettest
Wettest since:
1915
Apr–Sep 2007
6-Month
19.52"
(495.81mm)
23.57"
(598.68mm)
-4.05"
(-102.87mm)
12th Driest
Driest since:
1930
117th Wettest
Wettest since:
2011
Mar–Sep 2007
7-Month
22.63"
(574.80mm)
27.38"
(695.45mm)
-4.75"
(-120.65mm)
11th Driest
Driest since:
1930
118th Wettest
Wettest since:
1945
Feb–Sep 2007
8-Month
24.93"
(633.22mm)
30.05"
(763.27mm)
-5.12"
(-130.05mm)
8th Driest
Driest since:
1930
121st Wettest
Wettest since:
1945
Jan–Sep 2007
9-Month
28.63"
(727.20mm)
33.10"
(840.74mm)
-4.47"
(-113.54mm)
15th Driest
Driest since:
1930
114th Wettest
Wettest since:
1950
Dec 2006–Sep 2007
10-Month
31.87"
(809.50mm)
36.19"
(919.23mm)
-4.32"
(-109.73mm)
18th Driest
Driest since:
1930
110th Wettest
Wettest since:
1950
Nov 2006–Sep 2007
11-Month
35.10"
(891.54mm)
39.33"
(998.98mm)
-4.23"
(-107.44mm)
18th Driest
Driest since:
1930
110th Wettest
Wettest since:
2019
Oct 2006–Sep 2007
12-Month
39.52"
(1,003.81mm)
42.25"
(1,073.15mm)
-2.73"
(-69.34mm)
28th Driest
Driest since:
1925
100th Wettest
Wettest since:
2019
Apr 2006–Sep 2007
18-Month
64.34"
(1,634.24mm)
65.79"
(1,671.07mm)
-1.45"
(-36.83mm)
38th Driest
Driest since:
1931
90th Wettest
Wettest since:
2019
Oct 2005–Sep 2007
24-Month
80.08"
(2,034.03mm)
84.47"
(2,145.54mm)
-4.39"
(-111.51mm)
29th Driest
Driest since:
1941
98th Wettest
Wettest since:
2020
Ties: 1935
Oct 2004–Sep 2007
36-Month
124.31"
(3,157.47mm)
126.72"
(3,218.69mm)
-2.41"
(-61.22mm)
39th Driest
Driest since:
1941
87th Wettest
Wettest since:
2020
Oct 2003–Sep 2007
48-Month
169.92"
(4,315.97mm)
168.99"
(4,292.35mm)
0.93"
(23.62mm)
59th Driest
Driest since:
1956
66th Wettest
Wettest since:
2021
Oct 2002–Sep 2007
60-Month
217.21"
(5,517.13mm)
211.21"
(5,364.73mm)
6.00"
(152.40mm)
78th Driest
Driest since:
1956
46th Wettest
Wettest since:
2020
Ties: 1923

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