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 2005

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
December 2005
1-Month 		1.82"
(46.23mm)		 3.11"
(78.99mm)		 -1.29"
(-32.76mm)		 13th Driest
Driest since:
 1958
116th Wettest
Wettest since:
 1990
Ties: 1939
Nov–Dec 2005
2-Month 		5.27"
(133.86mm)		 6.23"
(158.24mm)		 -0.96"
(-24.38mm)		 44th Driest
Driest since:
 1976
85th Wettest
Wettest since:
 2015
Ties: 1997
Oct–Dec 2005
3-Month 		6.94"
(176.28mm)		 9.13"
(231.90mm)		 -2.19"
(-55.62mm)		 20th Driest
Driest since:
 1963
109th Wettest
Wettest since:
 1990
Sep–Dec 2005
4-Month 		10.01"
(254.25mm)		 12.60"
(320.04mm)		 -2.59"
(-65.79mm)		 21st Driest
Driest since:
 1963
108th Wettest
Wettest since:
 1926
Ties: 2022
Aug–Dec 2005
5-Month 		15.12"
(384.05mm)		 16.27"
(413.26mm)		 -1.15"
(-29.21mm)		 46th Driest
Driest since:
 1953
83rd Wettest
Wettest since:
 1926
Jul–Dec 2005
6-Month 		19.15"
(486.41mm)		 20.27"
(514.86mm)		 -1.12"
(-28.45mm)		 39th Driest
Driest since:
 1953
90th Wettest
Wettest since:
 1926
Jun–Dec 2005
7-Month 		22.06"
(560.32mm)		 24.52"
(622.81mm)		 -2.46"
(-62.49mm)		 27th Driest
Driest since:
 1953
102nd Wettest
Wettest since:
 2015
May–Dec 2005
8-Month 		24.28"
(616.71mm)		 28.79"
(731.27mm)		 -4.51"
(-114.56mm)		 18th Driest
Driest since:
 1953
111th Wettest
Wettest since:
 2015
Apr–Dec 2005
9-Month 		28.21"
(716.53mm)		 32.70"
(830.58mm)		 -4.49"
(-114.05mm)		 21st Driest
Driest since:
 1930
108th Wettest
Wettest since:
 2015
Mar–Dec 2005
10-Month 		30.72"
(780.29mm)		 36.51"
(927.35mm)		 -5.79"
(-147.06mm)		 9th Driest
Driest since:
 1930
120th Wettest
Wettest since:
 2011
Feb–Dec 2005
11-Month 		33.17"
(842.52mm)		 39.19"
(995.43mm)		 -6.02"
(-152.91mm)		 9th Driest
Driest since:
 1930
120th Wettest
Wettest since:
 2011
Jan–Dec 2005
12-Month 		38.50"
(977.90mm)		 42.23"
(1,072.64mm)		 -3.73"
(-94.74mm)		 23rd Driest
Driest since:
 1930
106th Wettest
Wettest since:
 2019
Jul 2004–Dec 2005
18-Month 		63.41"
(1,610.61mm)		 62.51"
(1,587.75mm)		 0.90"
(22.86mm)		 61st Driest
Driest since:
 1953
67th Wettest
Wettest since:
 2019
Jan 2004–Dec 2005
24-Month 		86.61"
(2,199.89mm)		 84.45"
(2,145.03mm)		 2.16"
(54.86mm)		 75th Driest
Driest since:
 1953
53rd Wettest
Wettest since:
 2019
Jan 2003–Dec 2005
36-Month 		134.34"
(3,412.24mm)		 126.69"
(3,217.93mm)		 7.65"
(194.31mm)		 94th Driest
Driest since:
 1954
33rd Wettest
Wettest since:
 2020
Jan 2002–Dec 2005
48-Month 		179.30"
(4,554.22mm)		 168.95"
(4,291.33mm)		 10.35"
(262.89mm)		 96th Driest
Driest since:
 1955
30th Wettest
Wettest since:
 2021
Jan 2001–Dec 2005
60-Month 		222.74"
(5,657.60mm)		 211.20"
(5,364.48mm)		 11.54"
(293.12mm)		 92nd Driest
Driest since:
 1956
33rd Wettest
Wettest since:
 2021

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