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 2020

View Period (Months):
Download: csv json xml
  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
September 2020
1-Month
3.24"
(82.30mm)
3.47"
(88.14mm)
-0.23"
(-5.84mm)
58th Driest
Driest since:
1897
71st Wettest
Wettest since:
1926
Aug–Sep 2020
2-Month
7.04"
(178.82mm)
7.14"
(181.36mm)
-0.10"
(-2.54mm)
68th Driest
Driest since:
1897
61st Wettest
Wettest since:
1926
Jul–Sep 2020
3-Month
11.97"
(304.04mm)
11.14"
(282.96mm)
0.83"
(21.08mm)
87th Driest
Driest since:
1953
42nd Wettest
Wettest since:
1926
Jun–Sep 2020
4-Month
15.88"
(403.35mm)
15.39"
(390.91mm)
0.49"
(12.44mm)
68th Driest
Driest since:
1953
61st Wettest
Wettest since:
1915
Ties: 1923
May–Sep 2020
5-Month
21.31"
(541.27mm)
19.66"
(499.36mm)
1.65"
(41.91mm)
83rd Driest
Driest since:
1930
46th Wettest
Wettest since:
1915
Apr–Sep 2020
6-Month
25.88"
(657.35mm)
23.57"
(598.68mm)
2.31"
(58.67mm)
90th Driest
Driest since:
1930
39th Wettest
Wettest since:
2011
Mar–Sep 2020
7-Month
31.35"
(796.29mm)
27.38"
(695.45mm)
3.97"
(100.84mm)
109th Driest
Driest since:
1930
20th Wettest
Wettest since:
1945
Feb–Sep 2020
8-Month
35.49"
(901.45mm)
30.05"
(763.27mm)
5.44"
(138.18mm)
118th Driest
Driest since:
1930
11th Wettest
Wettest since:
1945
Jan–Sep 2020
9-Month
40.06"
(1,017.52mm)
33.10"
(840.74mm)
6.96"
(176.78mm)
121st Driest
Driest since:
1930
8th Wettest
Wettest since:
1950
Dec 2019–Sep 2020
10-Month
43.63"
(1,108.20mm)
36.19"
(919.23mm)
7.44"
(188.97mm)
121st Driest
Driest since:
1930
7th Wettest
Wettest since:
1950
Nov 2019–Sep 2020
11-Month
46.77"
(1,187.96mm)
39.33"
(998.98mm)
7.44"
(188.98mm)
117th Driest
Driest since:
1930
11th Wettest
Wettest since:
2019
Oct 2019–Sep 2020
12-Month
52.03"
(1,321.56mm)
42.25"
(1,073.15mm)
9.78"
(248.41mm)
125th Driest
Driest since:
1925
3rd Wettest
Wettest since:
2019
Apr 2019–Sep 2020
18-Month
80.46"
(2,043.68mm)
65.79"
(1,671.07mm)
14.67"
(372.61mm)
126th Driest
Driest since:
1931
2nd Wettest
Wettest since:
2019
Oct 2018–Sep 2020
24-Month
106.22"
(2,697.99mm)
84.47"
(2,145.54mm)
21.75"
(552.45mm)
126th Driest
Driest since:
1941
1st Wettest
Wettest to Date
2020
Oct 2017–Sep 2020
36-Month
156.16"
(3,966.46mm)
126.72"
(3,218.69mm)
29.44"
(747.77mm)
125th Driest
Driest since:
1941
1st Wettest
Wettest to Date
2020
Oct 2016–Sep 2020
48-Month
200.03"
(5,080.76mm)
168.99"
(4,292.35mm)
31.04"
(788.41mm)
123rd Driest
Driest since:
1956
2nd Wettest
Wettest to Date
2021
Oct 2015–Sep 2020
60-Month
248.97"
(6,323.84mm)
211.21"
(5,364.73mm)
37.76"
(959.11mm)
123rd Driest
Driest since:
1956
1st Wettest
Wettest to Date
2020

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