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, August 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
August 1931
1-Month
4.89"
(124.21mm)
3.67"
(93.22mm)
1.22"
(30.99mm)
117th Driest
Driest since:
1953
12th Wettest
Wettest since:
1915
Jul–Aug 1931
2-Month
8.60"
(218.44mm)
7.67"
(194.82mm)
0.93"
(23.62mm)
96th Driest
Driest since:
1930
33rd Wettest
Wettest since:
1915
Jun–Aug 1931
3-Month
11.53"
(292.86mm)
11.92"
(302.77mm)
-0.39"
(-9.91mm)
43rd Driest
Driest since:
1930
86th Wettest
Wettest since:
1958
May–Aug 1931
4-Month
15.17"
(385.32mm)
16.19"
(411.23mm)
-1.02"
(-25.91mm)
40th Driest
Driest since:
1936
89th Wettest
Wettest since:
1915
Apr–Aug 1931
5-Month
18.63"
(473.20mm)
20.10"
(510.54mm)
-1.47"
(-37.34mm)
34th Driest
Driest since:
1930
95th Wettest
Wettest since:
2015
Mar–Aug 1931
6-Month
21.81"
(553.97mm)
23.91"
(607.31mm)
-2.10"
(-53.34mm)
31st Driest
Driest since:
1930
98th Wettest
Wettest since:
2015
Feb–Aug 1931
7-Month
24.25"
(615.95mm)
26.58"
(675.13mm)
-2.33"
(-59.18mm)
29th Driest
Driest since:
1930
100th Wettest
Wettest since:
2019
Jan–Aug 1931
8-Month
25.27"
(641.86mm)
29.63"
(752.60mm)
-4.36"
(-110.74mm)
13th Driest
Driest since:
1936
116th Wettest
Wettest since:
2019
Dec 1930–Aug 1931
9-Month
26.88"
(682.75mm)
32.72"
(831.09mm)
-5.84"
(-148.34mm)
10th Driest
Driest since:
1936
118th Wettest
Wettest since:
2019
Nov 1930–Aug 1931
10-Month
29.16"
(740.66mm)
35.86"
(910.84mm)
-6.70"
(-170.18mm)
8th Driest
Driest since:
1936
120th Wettest
Wettest since:
2019
Oct 1930–Aug 1931
11-Month
31.27"
(794.26mm)
38.78"
(985.01mm)
-7.51"
(-190.75mm)
6th Driest
Driest since:
1936
122nd Wettest
Wettest since:
2019
Sep 1930–Aug 1931
12-Month
34.58"
(878.33mm)
42.24"
(1,072.90mm)
-7.66"
(-194.57mm)
10th Driest
Driest since:
1936
118th Wettest
Wettest since:
2019
Mar 1930–Aug 1931
18-Month
48.27"
(1,226.06mm)
66.13"
(1,679.70mm)
-17.86"
(-453.64mm)
1st Driest
Driest since:
1931
127th Wettest
Wettest since:
2019
Sep 1929–Aug 1931
24-Month
69.08"
(1,754.63mm)
84.47"
(2,145.54mm)
-15.39"
(-390.91mm)
3rd Driest
Driest since:
1941
124th Wettest
Wettest since:
2020
Sep 1928–Aug 1931
36-Month
114.97"
(2,920.24mm)
126.74"
(3,219.20mm)
-11.77"
(-298.96mm)
11th Driest
Driest since:
1941
115th Wettest
Wettest since:
2020
Sep 1927–Aug 1931
48-Month
161.06"
(4,090.92mm)
168.98"
(4,292.09mm)
-7.92"
(-201.17mm)
20th Driest
Driest since:
1956
105th Wettest
Wettest since:
2022
Sep 1926–Aug 1931
60-Month
216.10"
(5,488.94mm)
211.20"
(5,364.48mm)
4.90"
(124.46mm)
71st Driest
Driest since:
1934
53rd Wettest
Wettest since:
2020

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