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, December 1927

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
December 1927
1-Month		3.60"
(91.44mm)		3.11"
(78.99mm)		0.49"
(12.45mm)		86th Driest
Driest since:
1958
43rd Wettest
Wettest since:
1990
Nov–Dec 1927
2-Month		8.32"
(211.33mm)		6.23"
(158.24mm)		2.09"
(53.09mm)		109th Driest
Driest since:
1976
20th Wettest
Wettest since:
2015
Oct–Dec 1927
3-Month		11.62"
(295.15mm)		9.13"
(231.90mm)		2.49"
(63.25mm)		110th Driest
Driest since:
1963
19th Wettest
Wettest since:
1990
Sep–Dec 1927
4-Month		15.09"
(383.29mm)		12.60"
(320.04mm)		2.49"
(63.25mm)		102nd Driest
Driest since:
1963
27th Wettest
Wettest since:
1926
Aug–Dec 1927
5-Month		18.79"
(477.27mm)		16.27"
(413.26mm)		2.52"
(64.01mm)		102nd Driest
Driest since:
1953
27th Wettest
Wettest since:
1926
Jul–Dec 1927
6-Month		22.75"
(577.85mm)		20.27"
(514.86mm)		2.48"
(62.99mm)		94th Driest
Driest since:
1953
35th Wettest
Wettest since:
1926
Jun–Dec 1927
7-Month		27.19"
(690.63mm)		24.52"
(622.81mm)		2.67"
(67.82mm)		94th Driest
Driest since:
1953
35th Wettest
Wettest since:
2015
May–Dec 1927
8-Month		33.33"
(846.58mm)		28.79"
(731.27mm)		4.54"
(115.31mm)		112th Driest
Driest since:
1953
17th Wettest
Wettest since:
2015
Apr–Dec 1927
9-Month		40.13"
(1,019.30mm)		32.70"
(830.58mm)		7.43"
(188.72mm)		121st Driest
Driest since:
1930
8th Wettest
Wettest to Date
2015
Mar–Dec 1927
10-Month		45.37"
(1,152.40mm)		36.51"
(927.35mm)		8.86"
(225.05mm)		125th Driest
Driest since:
1930
4th Wettest
Wettest to Date
2011
Feb–Dec 1927
11-Month		47.71"
(1,211.83mm)		39.19"
(995.43mm)		8.52"
(216.40mm)		121st Driest
Driest since:
1930
8th Wettest
Wettest to Date
2011
Jan–Dec 1927
12-Month		51.25"
(1,301.75mm)		42.23"
(1,072.64mm)		9.02"
(229.11mm)		122nd Driest
Driest since:
1930
7th Wettest
Wettest to Date
2019
Jul 1926–Dec 1927
18-Month		79.95"
(2,030.73mm)		62.51"
(1,587.75mm)		17.44"
(442.98mm)		126th Driest
Driest since:
1953
2nd Wettest
Wettest to Date
2019
Jan 1926–Dec 1927
24-Month		97.46"
(2,475.48mm)		84.45"
(2,145.03mm)		13.01"
(330.45mm)		120th Driest
Driest since:
1953
8th Wettest
Wettest to Date
2019
Jan 1925–Dec 1927
36-Month		134.95"
(3,427.73mm)		126.69"
(3,217.93mm)		8.26"
(209.80mm)		96th Driest
Driest since:
1954
31st Wettest
Wettest to Date
2020
Jan 1924–Dec 1927
48-Month		175.62"
(4,460.75mm)		168.95"
(4,291.33mm)		6.67"
(169.42mm)		86th Driest
Driest since:
1955
40th Wettest
Wettest to Date
2021
Jan 1923–Dec 1927
60-Month		220.50"
(5,600.70mm)		211.20"
(5,364.48mm)		9.30"
(236.22mm)		89th Driest
Driest since:
1956
36th Wettest
Wettest to Date
2021

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