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, October 1921

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
October 1921
1-Month
2.35"
(59.69mm)
2.90"
(73.66mm)
-0.55"
(-13.97mm)
46th Driest
Driest since:
1963
83rd Wettest
Wettest since:
1919
Sep–Oct 1921
2-Month
7.98"
(202.69mm)
6.37"
(161.80mm)
1.61"
(40.89mm)
103rd Driest
Driest since:
1897
26th Wettest
Wettest since:
1926
Aug–Oct 1921
3-Month
13.22"
(335.79mm)
10.04"
(255.02mm)
3.18"
(80.77mm)
120th Driest
Driest since:
1897
9th Wettest
Wettest since:
1926
Jul–Oct 1921
4-Month
16.15"
(410.21mm)
14.04"
(356.62mm)
2.11"
(53.59mm)
101st Driest
Driest since:
1953
28th Wettest
Wettest since:
1926
Jun–Oct 1921
5-Month
20.02"
(508.51mm)
18.29"
(464.57mm)
1.73"
(43.94mm)
87th Driest
Driest since:
1953
42nd Wettest
Wettest since:
1926
May–Oct 1921
6-Month
22.84"
(580.14mm)
22.56"
(573.02mm)
0.28"
(7.12mm)
59th Driest
Driest since:
1930
70th Wettest
Wettest since:
2009
Apr–Oct 1921
7-Month
27.36"
(694.94mm)
26.47"
(672.34mm)
0.89"
(22.60mm)
66th Driest
Driest since:
1930
63rd Wettest
Wettest since:
2009
Mar–Oct 1921
8-Month
32.54"
(826.52mm)
30.28"
(769.11mm)
2.26"
(57.41mm)
85th Driest
Driest since:
1930
44th Wettest
Wettest since:
2009
Feb–Oct 1921
9-Month
34.76"
(882.90mm)
32.95"
(836.93mm)
1.81"
(45.97mm)
82nd Driest
Driest since:
1930
47th Wettest
Wettest since:
2019
Jan–Oct 1921
10-Month
37.16"
(943.86mm)
36.00"
(914.40mm)
1.16"
(29.46mm)
73rd Driest
Driest since:
1930
56th Wettest
Wettest since:
2019
Dec 1920–Oct 1921
11-Month
40.13"
(1,019.30mm)
39.09"
(992.89mm)
1.04"
(26.41mm)
67th Driest
Driest since:
1930
61st Wettest
Wettest since:
2019
Nov 1920–Oct 1921
12-Month
42.19"
(1,071.63mm)
42.23"
(1,072.64mm)
-0.04"
(-1.01mm)
53rd Driest
Driest since:
1963
75th Wettest
Wettest since:
2019
May 1920–Oct 1921
18-Month
63.63"
(1,616.20mm)
64.79"
(1,645.67mm)
-1.16"
(-29.47mm)
40th Driest
Driest since:
1931
88th Wettest
Wettest since:
2019
Nov 1919–Oct 1921
24-Month
85.33"
(2,167.38mm)
84.46"
(2,145.28mm)
0.87"
(22.10mm)
59th Driest
Driest since:
1931
68th Wettest
Wettest since:
2020
Nov 1918–Oct 1921
36-Month
129.40"
(3,286.76mm)
126.69"
(3,217.93mm)
2.71"
(68.83mm)
68th Driest
Driest since:
1954
58th Wettest
Wettest since:
2020
Nov 1917–Oct 1921
48-Month
165.71"
(4,209.03mm)
168.97"
(4,291.84mm)
-3.26"
(-82.81mm)
35th Driest
Driest since:
1956
90th Wettest
Wettest since:
2021
Nov 1916–Oct 1921
60-Month
207.55"
(5,271.77mm)
211.20"
(5,364.48mm)
-3.65"
(-92.71mm)
36th Driest
Driest since:
1956
88th Wettest
Wettest since:
2020

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