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 1931

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
July 1931
1-Month
3.71"
(94.23mm)
4.00"
(101.60mm)
-0.29"
(-7.37mm)
46th Driest
Driest since:
1930
83rd Wettest
Wettest since:
1958
Jun–Jul 1931
2-Month
6.64"
(168.66mm)
8.25"
(209.55mm)
-1.61"
(-40.89mm)
20th Driest
Driest since:
1930
109th Wettest
Wettest since:
2015
May–Jul 1931
3-Month
10.28"
(261.11mm)
12.52"
(318.01mm)
-2.24"
(-56.90mm)
22nd Driest
Driest since:
1936
107th Wettest
Wettest since:
2015
Apr–Jul 1931
4-Month
13.74"
(349.00mm)
16.43"
(417.32mm)
-2.69"
(-68.32mm)
18th Driest
Driest since:
1930
111th Wettest
Wettest since:
2015
Mar–Jul 1931
5-Month
16.92"
(429.77mm)
20.24"
(514.10mm)
-3.32"
(-84.33mm)
19th Driest
Driest since:
1930
110th Wettest
Wettest since:
1973
Ties: 1987
Feb–Jul 1931
6-Month
19.36"
(491.74mm)
22.91"
(581.91mm)
-3.55"
(-90.17mm)
19th Driest
Driest since:
1930
110th Wettest
Wettest since:
2019
Jan–Jul 1931
7-Month
20.38"
(517.65mm)
25.96"
(659.38mm)
-5.58"
(-141.73mm)
10th Driest
Driest since:
1936
119th Wettest
Wettest since:
2019
Dec 1930–Jul 1931
8-Month
21.99"
(558.55mm)
29.05"
(737.87mm)
-7.06"
(-179.32mm)
7th Driest
Driest since:
1936
121st Wettest
Wettest since:
2019
Nov 1930–Jul 1931
9-Month
24.27"
(616.46mm)
32.19"
(817.63mm)
-7.92"
(-201.17mm)
4th Driest
Driest since:
1934
124th Wettest
Wettest since:
2019
Oct 1930–Jul 1931
10-Month
26.38"
(670.05mm)
35.11"
(891.79mm)
-8.73"
(-221.74mm)
3rd Driest
Driest since:
1934
125th Wettest
Wettest since:
2019
Sep 1930–Jul 1931
11-Month
29.69"
(754.13mm)
38.57"
(979.68mm)
-8.88"
(-225.55mm)
6th Driest
Driest since:
1954
122nd Wettest
Wettest since:
2019
Aug 1930–Jul 1931
12-Month
31.89"
(810.01mm)
42.24"
(1,072.90mm)
-10.35"
(-262.89mm)
2nd Driest
Driest since:
1954
126th Wettest
Wettest since:
2019
Feb 1930–Jul 1931
18-Month
45.98"
(1,167.89mm)
65.14"
(1,654.56mm)
-19.16"
(-486.67mm)
1st Driest
Driest since:
1931
127th Wettest
Wettest since:
2019
Aug 1929–Jul 1931
24-Month
66.78"
(1,696.21mm)
84.47"
(2,145.54mm)
-17.69"
(-449.33mm)
3rd Driest
Driest since:
1941
124th Wettest
Wettest since:
2020
Aug 1928–Jul 1931
36-Month
114.48"
(2,907.79mm)
126.75"
(3,219.45mm)
-12.27"
(-311.66mm)
11th Driest
Driest since:
1942
115th Wettest
Wettest since:
2021
Aug 1927–Jul 1931
48-Month
159.87"
(4,060.70mm)
168.98"
(4,292.09mm)
-9.11"
(-231.39mm)
21st Driest
Driest since:
1966
104th Wettest
Wettest since:
2022
Aug 1926–Jul 1931
60-Month
217.42"
(5,522.47mm)
211.20"
(5,364.48mm)
6.22"
(157.99mm)
76th Driest
Driest since:
1934
48th Wettest
Wettest since:
2020

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