Regional Rankings

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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, December 2017

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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
December 2017 1-Month	1.89" (48.01mm)	3.11" (78.99mm)	-1.22" (-30.98mm)	20th Driest	Driest since: 2005	1958
December 2017 1-Month	1.89" (48.01mm)	3.11" (78.99mm)	-1.22" (-30.98mm)	109th Wettest	Wettest since: 2016	1990
Nov–Dec 2017 2-Month	4.56" (115.82mm)	6.23" (158.24mm)	-1.67" (-42.42mm)	20th Driest	Driest since: 1989	1976
Nov–Dec 2017 2-Month	4.56" (115.82mm)	6.23" (158.24mm)	-1.67" (-42.42mm)	109th Wettest	Wettest since: 2016	2015
Oct–Dec 2017 3-Month	9.08" (230.63mm)	9.13" (231.90mm)	-0.05" (-1.27mm)	59th Driest	Driest since: 2016	1963
Oct–Dec 2017 3-Month	9.08" (230.63mm)	9.13" (231.90mm)	-0.05" (-1.27mm)	70th Wettest	Wettest since: 2015	1990
Sep–Dec 2017 4-Month	11.25" (285.75mm)	12.60" (320.04mm)	-1.35" (-34.29mm)	44th Driest	Driest since: 2016	1963
Sep–Dec 2017 4-Month	11.25" (285.75mm)	12.60" (320.04mm)	-1.35" (-34.29mm)	85th Wettest	Wettest since: 2015	1926
Aug–Dec 2017 5-Month	14.91" (378.71mm)	16.27" (413.26mm)	-1.36" (-34.55mm)	44th Driest	Driest since: 2010	1953
Aug–Dec 2017 5-Month	14.91" (378.71mm)	16.27" (413.26mm)	-1.36" (-34.55mm)	85th Wettest	Wettest since: 2016	1926
Jul–Dec 2017 6-Month	19.90" (505.46mm)	20.27" (514.86mm)	-0.37" (-9.40mm)	51st Driest	Driest since: 2010	1953
Jul–Dec 2017 6-Month	19.90" (505.46mm)	20.27" (514.86mm)	-0.37" (-9.40mm)	78th Wettest	Wettest since: 2016	1926
Jun–Dec 2017 7-Month	24.18" (614.17mm)	24.52" (622.81mm)	-0.34" (-8.64mm)	53rd Driest	Driest since: 2012	1953
Jun–Dec 2017 7-Month	24.18" (614.17mm)	24.52" (622.81mm)	-0.34" (-8.64mm)	76th Wettest	Wettest since: 2016	2015
May–Dec 2017 8-Month	30.05" (763.27mm)	28.79" (731.27mm)	1.26" (32.00mm)	67th Driest	Driest since: 2012	1953
May–Dec 2017 8-Month	30.05" (763.27mm)	28.79" (731.27mm)	1.26" (32.00mm)	62nd Wettest	Wettest since: 2016	2015
Apr–Dec 2017 9-Month	36.37" (923.80mm)	32.70" (830.58mm)	3.67" (93.22mm)	98th Driest	Driest since: 2016	1930
Apr–Dec 2017 9-Month	36.37" (923.80mm)	32.70" (830.58mm)	3.67" (93.22mm)	31st Wettest	Wettest since: 2015	2015
Mar–Dec 2017 10-Month	40.68" (1,033.27mm)	36.51" (927.35mm)	4.17" (105.92mm)	98th Driest	Driest since: 2016	1930
Mar–Dec 2017 10-Month	40.68" (1,033.27mm)	36.51" (927.35mm)	4.17" (105.92mm)	31st Wettest	Wettest since: 2015	2011
Feb–Dec 2017 11-Month	42.09" (1,069.09mm)	39.19" (995.43mm)	2.90" (73.66mm)	88th Driest	Driest since: 2016	1930
Feb–Dec 2017 11-Month	42.09" (1,069.09mm)	39.19" (995.43mm)	2.90" (73.66mm)	41st Wettest	Wettest since: 2015	2011
Jan–Dec 2017 12-Month	45.36" (1,152.14mm)	42.23" (1,072.64mm)	3.13" (79.50mm)	92nd Driest	Driest since: 2016	1930
Jan–Dec 2017 12-Month	45.36" (1,152.14mm)	42.23" (1,072.64mm)	3.13" (79.50mm)	37th Wettest	Wettest since: 2015	2019
Jul 2016–Dec 2017 18-Month	67.77" (1,721.36mm)	62.51" (1,587.75mm)	5.26" (133.61mm)	99th Driest	Driest since: 2014	1953
Jul 2016–Dec 2017 18-Month	67.77" (1,721.36mm)	62.51" (1,587.75mm)	5.26" (133.61mm)	29th Wettest	Wettest since: 2016	2019
Jan 2016–Dec 2017 24-Month	87.82" (2,230.63mm)	84.45" (2,145.03mm)	3.37" (85.60mm)	83rd Driest	Driest since: 2013	1953
Jan 2016–Dec 2017 24-Month	87.82" (2,230.63mm)	84.45" (2,145.03mm)	3.37" (85.60mm)	45th Wettest	Wettest since: 2016	2019
Jan 2015–Dec 2017 36-Month	139.84" (3,551.94mm)	126.69" (3,217.93mm)	13.15" (334.01mm)	112th Driest	Driest since: 2016	1954
Jan 2015–Dec 2017 36-Month	139.84" (3,551.94mm)	126.69" (3,217.93mm)	13.15" (334.01mm)	15th Wettest	Wettest since: 2015	2020
Jan 2014–Dec 2017 48-Month	183.11" (4,650.99mm)	168.95" (4,291.33mm)	14.16" (359.66mm)	109th Driest	Driest since: 2015	1955
Jan 2014–Dec 2017 48-Month	183.11" (4,650.99mm)	168.95" (4,291.33mm)	14.16" (359.66mm)	17th Wettest	Wettest since: 2016	2021
Jan 2013–Dec 2017 60-Month	231.47" (5,879.34mm)	211.20" (5,364.48mm)	20.27" (514.86mm)	116th Driest	Driest since: 2016	1956
Jan 2013–Dec 2017 60-Month	231.47" (5,879.34mm)	211.20" (5,364.48mm)	20.27" (514.86mm)	9th Wettest	Wettest since: 2015	2021

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on February 3, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings