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 1921

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
August 1921
1-Month
5.24"
(133.10mm)
3.67"
(93.22mm)
1.57"
(39.88mm)
122nd Driest
Driest since:
1953
7th Wettest
Wettest since:
1915
Jul–Aug 1921
2-Month
8.17"
(207.52mm)
7.67"
(194.82mm)
0.50"
(12.70mm)
83rd Driest
Driest since:
1930
46th Wettest
Wettest since:
1915
Ties: 1965
Jun–Aug 1921
3-Month
12.04"
(305.82mm)
11.92"
(302.77mm)
0.12"
(3.05mm)
60th Driest
Driest since:
1930
69th Wettest
Wettest since:
1958
Ties: 1947, 1987
May–Aug 1921
4-Month
14.86"
(377.44mm)
16.19"
(411.23mm)
-1.33"
(-33.79mm)
36th Driest
Driest since:
1936
93rd Wettest
Wettest since:
1915
Apr–Aug 1921
5-Month
19.38"
(492.25mm)
20.10"
(510.54mm)
-0.72"
(-18.29mm)
45th Driest
Driest since:
1930
84th Wettest
Wettest since:
2015
Mar–Aug 1921
6-Month
24.56"
(623.82mm)
23.91"
(607.31mm)
0.65"
(16.51mm)
62nd Driest
Driest since:
1930
67th Wettest
Wettest since:
2015
Feb–Aug 1921
7-Month
26.78"
(680.21mm)
26.58"
(675.13mm)
0.20"
(5.08mm)
56th Driest
Driest since:
1930
73rd Wettest
Wettest since:
2019
Jan–Aug 1921
8-Month
29.18"
(741.17mm)
29.63"
(752.60mm)
-0.45"
(-11.43mm)
53rd Driest
Driest since:
1936
76th Wettest
Wettest since:
2019
Ties: 1972
Dec 1920–Aug 1921
9-Month
32.15"
(816.61mm)
32.72"
(831.09mm)
-0.57"
(-14.48mm)
43rd Driest
Driest since:
1936
85th Wettest
Wettest since:
2019
Nov 1920–Aug 1921
10-Month
34.21"
(868.93mm)
35.86"
(910.84mm)
-1.65"
(-41.91mm)
37th Driest
Driest since:
1936
91st Wettest
Wettest since:
2019
Oct 1920–Aug 1921
11-Month
36.29"
(921.77mm)
38.78"
(985.01mm)
-2.49"
(-63.24mm)
29th Driest
Driest since:
1936
99th Wettest
Wettest since:
2019
Sep 1920–Aug 1921
12-Month
39.74"
(1,009.40mm)
42.24"
(1,072.90mm)
-2.50"
(-63.50mm)
29th Driest
Driest since:
1936
99th Wettest
Wettest since:
2019
Mar 1920–Aug 1921
18-Month
65.63"
(1,667.00mm)
66.13"
(1,679.70mm)
-0.50"
(-12.70mm)
51st Driest
Driest since:
1931
77th Wettest
Wettest since:
2019
Sep 1919–Aug 1921
24-Month
87.18"
(2,214.37mm)
84.47"
(2,145.54mm)
2.71"
(68.83mm)
69th Driest
Driest since:
1941
58th Wettest
Wettest since:
2020
Sep 1918–Aug 1921
36-Month
128.92"
(3,274.57mm)
126.74"
(3,219.20mm)
2.18"
(55.37mm)
69th Driest
Driest since:
1941
57th Wettest
Wettest since:
2020
Sep 1917–Aug 1921
48-Month
163.36"
(4,149.34mm)
168.98"
(4,292.09mm)
-5.62"
(-142.75mm)
30th Driest
Driest since:
1956
95th Wettest
Wettest since:
2022
Sep 1916–Aug 1921
60-Month
204.96"
(5,205.98mm)
211.20"
(5,364.48mm)
-6.24"
(-158.50mm)
29th Driest
Driest since:
1934
95th Wettest
Wettest since:
2020

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