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, July 2021

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
July 2021
1-Month
5.14"
(130.56mm)
4.00"
(101.60mm)
1.14"
(28.96mm)
111th Driest
Driest since:
1930
18th Wettest
Wettest since:
1958
Ties: 1907
Jun–Jul 2021
2-Month
10.24"
(260.10mm)
8.25"
(209.55mm)
1.99"
(50.55mm)
111th Driest
Driest since:
1930
18th Wettest
Wettest since:
2015
May–Jul 2021
3-Month
14.37"
(365.00mm)
12.52"
(318.01mm)
1.85"
(46.99mm)
93rd Driest
Driest since:
1936
36th Wettest
Wettest since:
2015
Ties: 1924
Apr–Jul 2021
4-Month
17.66"
(448.56mm)
16.43"
(417.32mm)
1.23"
(31.24mm)
79th Driest
Driest since:
1930
50th Wettest
Wettest since:
2015
Mar–Jul 2021
5-Month
22.97"
(583.44mm)
20.24"
(514.10mm)
2.73"
(69.34mm)
96th Driest
Driest since:
1930
33rd Wettest
Wettest since:
1973
Feb–Jul 2021
6-Month
25.63"
(651.00mm)
22.91"
(581.91mm)
2.72"
(69.09mm)
93rd Driest
Driest since:
1930
36th Wettest
Wettest since:
2019
Jan–Jul 2021
7-Month
28.58"
(725.93mm)
25.96"
(659.38mm)
2.62"
(66.55mm)
94th Driest
Driest since:
1936
35th Wettest
Wettest since:
2019
Dec 2020–Jul 2021
8-Month
31.14"
(790.96mm)
29.05"
(737.87mm)
2.09"
(53.09mm)
78th Driest
Driest since:
1936
50th Wettest
Wettest since:
2019
Nov 2020–Jul 2021
9-Month
33.82"
(859.03mm)
32.19"
(817.63mm)
1.63"
(41.40mm)
73rd Driest
Driest since:
1934
55th Wettest
Wettest since:
2019
Oct 2020–Jul 2021
10-Month
37.81"
(960.37mm)
35.11"
(891.79mm)
2.70"
(68.58mm)
82nd Driest
Driest since:
1934
46th Wettest
Wettest since:
2019
Sep 2020–Jul 2021
11-Month
41.05"
(1,042.67mm)
38.57"
(979.68mm)
2.48"
(62.99mm)
81st Driest
Driest since:
1954
47th Wettest
Wettest since:
2019
Aug 2020–Jul 2021
12-Month
44.85"
(1,139.19mm)
42.24"
(1,072.90mm)
2.61"
(66.29mm)
80th Driest
Driest since:
1954
48th Wettest
Wettest since:
2019
Feb 2020–Jul 2021
18-Month
73.30"
(1,861.82mm)
65.14"
(1,654.56mm)
8.16"
(207.26mm)
112th Driest
Driest since:
1931
16th Wettest
Wettest since:
2019
Aug 2019–Jul 2021
24-Month
96.43"
(2,449.32mm)
84.47"
(2,145.54mm)
11.96"
(303.78mm)
120th Driest
Driest since:
1941
7th Wettest
Wettest since:
2020
Aug 2018–Jul 2021
36-Month
155.06"
(3,938.52mm)
126.75"
(3,219.45mm)
28.31"
(719.07mm)
125th Driest
Driest since:
1942
1st Wettest
Wettest to Date
2021
Aug 2017–Jul 2021
48-Month
199.80"
(5,074.92mm)
168.98"
(4,292.09mm)
30.82"
(782.83mm)
122nd Driest
Driest since:
1966
3rd Wettest
Wettest since:
2022
Aug 2016–Jul 2021
60-Month
246.77"
(6,267.96mm)
211.20"
(5,364.48mm)
35.57"
(903.48mm)
122nd Driest
Driest since:
1934
2nd Wettest
Wettest since:
2020

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