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 1915

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 1915
1-Month
4.25"
(107.95mm)
3.47"
(88.14mm)
0.78"
(19.81mm)
100th Driest
Driest since:
1897
29th Wettest
Wettest since:
1926
Ties: 1924, 1961
Aug–Sep 1915
2-Month
10.67"
(271.02mm)
7.14"
(181.36mm)
3.53"
(89.66mm)
124th Driest
Driest since:
1897
5th Wettest
Wettest to Date
1926
Jul–Sep 1915
3-Month
16.41"
(416.81mm)
11.14"
(282.96mm)
5.27"
(133.85mm)
127th Driest
Driest since:
1953
2nd Wettest
Wettest to Date
1926
Jun–Sep 1915
4-Month
21.17"
(537.72mm)
15.39"
(390.91mm)
5.78"
(146.81mm)
128th Driest
Driest since:
1953
1st Wettest
Wettest to Date
1915
May–Sep 1915
5-Month
27.29"
(693.17mm)
19.66"
(499.36mm)
7.63"
(193.81mm)
128th Driest
Driest since:
1930
1st Wettest
Wettest to Date
1915
Apr–Sep 1915
6-Month
28.82"
(732.03mm)
23.57"
(598.68mm)
5.25"
(133.35mm)
120th Driest
Driest since:
1930
9th Wettest
Wettest to Date
2011
Mar–Sep 1915
7-Month
30.40"
(772.16mm)
27.38"
(695.45mm)
3.02"
(76.71mm)
94th Driest
Driest since:
1930
35th Wettest
Wettest since:
1945
Feb–Sep 1915
8-Month
32.91"
(835.91mm)
30.05"
(763.27mm)
2.86"
(72.64mm)
92nd Driest
Driest since:
1930
37th Wettest
Wettest since:
1945
Jan–Sep 1915
9-Month
36.65"
(930.91mm)
33.10"
(840.74mm)
3.55"
(90.17mm)
100th Driest
Driest since:
1930
29th Wettest
Wettest since:
1950
Dec 1914–Sep 1915
10-Month
40.62"
(1,031.75mm)
36.19"
(919.23mm)
4.43"
(112.52mm)
106th Driest
Driest since:
1930
22nd Wettest
Wettest since:
1950
Nov 1914–Sep 1915
11-Month
41.73"
(1,059.94mm)
39.33"
(998.98mm)
2.40"
(60.96mm)
88th Driest
Driest since:
1930
40th Wettest
Wettest since:
2019
Oct 1914–Sep 1915
12-Month
45.45"
(1,154.43mm)
42.25"
(1,073.15mm)
3.20"
(81.28mm)
89th Driest
Driest since:
1925
39th Wettest
Wettest since:
2019
Apr 1914–Sep 1915
18-Month
64.42"
(1,636.27mm)
65.79"
(1,671.07mm)
-1.37"
(-34.80mm)
41st Driest
Driest since:
1931
87th Wettest
Wettest since:
2019
Oct 1913–Sep 1915
24-Month
81.42"
(2,068.07mm)
84.47"
(2,145.54mm)
-3.05"
(-77.47mm)
37th Driest
Driest since:
1941
90th Wettest
Wettest since:
2020
Oct 1912–Sep 1915
36-Month
121.51"
(3,086.35mm)
126.72"
(3,218.69mm)
-5.21"
(-132.34mm)
27th Driest
Driest since:
1941
99th Wettest
Wettest since:
2020
Oct 1911–Sep 1915
48-Month
168.64"
(4,283.46mm)
168.99"
(4,292.35mm)
-0.35"
(-8.89mm)
53rd Driest
Driest since:
1956
72nd Wettest
Wettest since:
2021
Oct 1910–Sep 1915
60-Month
207.75"
(5,276.85mm)
211.21"
(5,364.73mm)
-3.46"
(-87.88mm)
38th Driest
Driest since:
1956
86th Wettest
Wettest since:
2020

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