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, September 2008

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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
September 2008 1-Month	4.43" (112.52mm)	3.47" (88.14mm)	0.96" (24.38mm)	104th Driest	Driest since: 2007	1897
	4.43" (112.52mm)	3.47" (88.14mm)	0.96" (24.38mm)	25th Wettest	Wettest since: 2006	1926
	Ties: 1925
Aug–Sep 2008 2-Month	6.74" (171.20mm)	7.14" (181.36mm)	-0.40" (-10.16mm)	57th Driest	Driest since: 2007	1897
	6.74" (171.20mm)	7.14" (181.36mm)	-0.40" (-10.16mm)	72nd Wettest	Wettest since: 2006	1926
	Ties: 1968
Jul–Sep 2008 3-Month	11.75" (298.45mm)	11.14" (282.96mm)	0.61" (15.49mm)	81st Driest	Driest since: 2007	1953
Jul–Sep 2008 3-Month	11.75" (298.45mm)	11.14" (282.96mm)	0.61" (15.49mm)	48th Wettest	Wettest since: 2006	1926
Jun–Sep 2008 4-Month	17.15" (435.61mm)	15.39" (390.91mm)	1.76" (44.70mm)	93rd Driest	Driest since: 2007	1953
Jun–Sep 2008 4-Month	17.15" (435.61mm)	15.39" (390.91mm)	1.76" (44.70mm)	36th Wettest	Wettest since: 2003	1915
May–Sep 2008 5-Month	22.38" (568.45mm)	19.66" (499.36mm)	2.72" (69.09mm)	102nd Driest	Driest since: 2007	1930
May–Sep 2008 5-Month	22.38" (568.45mm)	19.66" (499.36mm)	2.72" (69.09mm)	27th Wettest	Wettest since: 2004	1915
Apr–Sep 2008 6-Month	27.18" (690.37mm)	23.57" (598.68mm)	3.61" (91.69mm)	108th Driest	Driest since: 2007	1930
	27.18" (690.37mm)	23.57" (598.68mm)	3.61" (91.69mm)	21st Wettest	Wettest since: 2003	2011
	Ties: 1896
Mar–Sep 2008 7-Month	33.28" (845.31mm)	27.38" (695.45mm)	5.90" (149.86mm)	123rd Driest	Driest since: 2007	1930
Mar–Sep 2008 7-Month	33.28" (845.31mm)	27.38" (695.45mm)	5.90" (149.86mm)	6th Wettest	Wettest since: 1973	1945
Feb–Sep 2008 8-Month	37.72" (958.09mm)	30.05" (763.27mm)	7.67" (194.82mm)	124th Driest	Driest since: 2007	1930
Feb–Sep 2008 8-Month	37.72" (958.09mm)	30.05" (763.27mm)	7.67" (194.82mm)	5th Wettest	Wettest since: 1945	1945
Jan–Sep 2008 9-Month	40.31" (1,023.87mm)	33.10" (840.74mm)	7.21" (183.13mm)	123rd Driest	Driest since: 2007	1930
	40.31" (1,023.87mm)	33.10" (840.74mm)	7.21" (183.13mm)	6th Wettest	Wettest since: 1950	1950
	Ties: 1898
Dec 2007–Sep 2008 10-Month	44.98" (1,142.49mm)	36.19" (919.23mm)	8.79" (223.26mm)	125th Driest	Driest since: 2007	1930
Dec 2007–Sep 2008 10-Month	44.98" (1,142.49mm)	36.19" (919.23mm)	8.79" (223.26mm)	3rd Wettest	Wettest since: 1950	1950
Nov 2007–Sep 2008 11-Month	47.45" (1,205.23mm)	39.33" (998.98mm)	8.12" (206.25mm)	122nd Driest	Driest since: 2007	1930
Nov 2007–Sep 2008 11-Month	47.45" (1,205.23mm)	39.33" (998.98mm)	8.12" (206.25mm)	6th Wettest	Wettest since: 1979	2019
Oct 2007–Sep 2008 12-Month	51.50" (1,308.10mm)	42.25" (1,073.15mm)	9.25" (234.95mm)	122nd Driest	Driest since: 2007	1925
Oct 2007–Sep 2008 12-Month	51.50" (1,308.10mm)	42.25" (1,073.15mm)	9.25" (234.95mm)	6th Wettest	Wettest since: 1973	2019
Apr 2007–Sep 2008 18-Month	71.02" (1,803.91mm)	65.79" (1,671.07mm)	5.23" (132.84mm)	97th Driest	Driest since: 2007	1931
Apr 2007–Sep 2008 18-Month	71.02" (1,803.91mm)	65.79" (1,671.07mm)	5.23" (132.84mm)	31st Wettest	Wettest since: 2004	2019
Oct 2006–Sep 2008 24-Month	91.02" (2,311.91mm)	84.47" (2,145.54mm)	6.55" (166.37mm)	97th Driest	Driest since: 2007	1941
Oct 2006–Sep 2008 24-Month	91.02" (2,311.91mm)	84.47" (2,145.54mm)	6.55" (166.37mm)	30th Wettest	Wettest since: 2004	2020
Oct 2005–Sep 2008 36-Month	131.58" (3,342.13mm)	126.72" (3,218.69mm)	4.86" (123.44mm)	81st Driest	Driest since: 2007	1941
Oct 2005–Sep 2008 36-Month	131.58" (3,342.13mm)	126.72" (3,218.69mm)	4.86" (123.44mm)	45th Wettest	Wettest since: 2005	2020
Oct 2004–Sep 2008 48-Month	175.81" (4,465.57mm)	168.99" (4,292.35mm)	6.82" (173.22mm)	86th Driest	Driest since: 2007	1956
Oct 2004–Sep 2008 48-Month	175.81" (4,465.57mm)	168.99" (4,292.35mm)	6.82" (173.22mm)	39th Wettest	Wettest since: 2006	2021
Oct 2003–Sep 2008 60-Month	221.42" (5,624.07mm)	211.21" (5,364.73mm)	10.21" (259.34mm)	91st Driest	Driest since: 2007	1956
Oct 2003–Sep 2008 60-Month	221.42" (5,624.07mm)	211.21" (5,364.73mm)	10.21" (259.34mm)	33rd Wettest	Wettest since: 2006	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on January 30, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings