Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. 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, September 1938

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
September 1938
1-Month		2.97"
(75.44mm)		3.47"
(88.14mm)		-0.50"
(-12.70mm)		44th Driest
Driest since:
1897
85th Wettest
Wettest since:
1926
Ties: 1982
Aug–Sep 1938
2-Month		6.40"
(162.56mm)		7.14"
(181.36mm)		-0.74"
(-18.80mm)		39th Driest
Driest since:
1897
90th Wettest
Wettest since:
1926
Jul–Sep 1938
3-Month		11.46"
(291.08mm)		11.14"
(282.96mm)		0.32"
(8.12mm)		72nd Driest
Driest since:
1953
57th Wettest
Wettest since:
1926
Jun–Sep 1938
4-Month		16.31"
(414.27mm)		15.39"
(390.91mm)		0.92"
(23.36mm)		75th Driest
Driest since:
1953
54th Wettest
Wettest since:
1915
May–Sep 1938
5-Month		21.96"
(557.78mm)		19.66"
(499.36mm)		2.30"
(58.42mm)		95th Driest
Driest since:
1930
34th Wettest
Wettest since:
1915
Ties: 1942
Apr–Sep 1938
6-Month		25.34"
(643.64mm)		23.57"
(598.68mm)		1.77"
(44.96mm)		83rd Driest
Driest since:
1930
46th Wettest
Wettest since:
2011
Ties: 1924
Mar–Sep 1938
7-Month		30.81"
(782.57mm)		27.38"
(695.45mm)		3.43"
(87.12mm)		102nd Driest
Driest since:
1930
27th Wettest
Wettest since:
1945
Feb–Sep 1938
8-Month		33.55"
(852.17mm)		30.05"
(763.27mm)		3.50"
(88.90mm)		103rd Driest
Driest since:
1930
26th Wettest
Wettest since:
1945
Ties: 1958
Jan–Sep 1938
9-Month		36.49"
(926.85mm)		33.10"
(840.74mm)		3.39"
(86.11mm)		98th Driest
Driest since:
1930
31st Wettest
Wettest since:
1950
Dec 1937–Sep 1938
10-Month		39.16"
(994.66mm)		36.19"
(919.23mm)		2.97"
(75.43mm)		90th Driest
Driest since:
1930
38th Wettest
Wettest since:
1950
Nov 1937–Sep 1938
11-Month		40.86"
(1,037.84mm)		39.33"
(998.98mm)		1.53"
(38.86mm)		75th Driest
Driest since:
1930
53rd Wettest
Wettest since:
2019
Ties: 1939
Oct 1937–Sep 1938
12-Month		44.98"
(1,142.49mm)		42.25"
(1,073.15mm)		2.73"
(69.34mm)		87th Driest
Driest since:
1925
41st Wettest
Wettest since:
2019
Apr 1937–Sep 1938
18-Month		67.55"
(1,715.77mm)		65.79"
(1,671.07mm)		1.76"
(44.70mm)		72nd Driest
Driest since:
1931
56th Wettest
Wettest since:
2019
Oct 1936–Sep 1938
24-Month		90.69"
(2,303.53mm)		84.47"
(2,145.54mm)		6.22"
(157.99mm)		96th Driest
Driest since:
1941
31st Wettest
Wettest since:
2020
Oct 1935–Sep 1938
36-Month		124.25"
(3,155.95mm)		126.72"
(3,218.69mm)		-2.47"
(-62.74mm)		38th Driest
Driest since:
1941
88th Wettest
Wettest since:
2020
Oct 1934–Sep 1938
48-Month		170.08"
(4,320.03mm)		168.99"
(4,292.35mm)		1.09"
(27.68mm)		60th Driest
Driest since:
1956
65th Wettest
Wettest since:
2021
Oct 1933–Sep 1938
60-Month		204.33"
(5,189.98mm)		211.21"
(5,364.73mm)		-6.88"
(-174.75mm)		24th Driest
Driest since:
1956
100th Wettest
Wettest since:
2020

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