Regional Rankings

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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, August 1939

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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
August 1939 1-Month	3.49" (88.65mm)	3.67" (93.22mm)	-0.18" (-4.57mm)	55th Driest	Driest since: 1938	1953
	3.49" (88.65mm)	3.67" (93.22mm)	-0.18" (-4.57mm)	74th Wettest	Wettest since: 1935	1915
	Ties: 2007
Jul–Aug 1939 2-Month	7.49" (190.25mm)	7.67" (194.82mm)	-0.18" (-4.57mm)	53rd Driest	Driest since: 1937	1930
Jul–Aug 1939 2-Month	7.49" (190.25mm)	7.67" (194.82mm)	-0.18" (-4.57mm)	76th Wettest	Wettest since: 1938	1915
Jun–Aug 1939 3-Month	13.41" (340.61mm)	11.92" (302.77mm)	1.49" (37.84mm)	92nd Driest	Driest since: 1938	1930
Jun–Aug 1939 3-Month	13.41" (340.61mm)	11.92" (302.77mm)	1.49" (37.84mm)	37th Wettest	Wettest since: 1935	1958
May–Aug 1939 4-Month	15.98" (405.89mm)	16.19" (411.23mm)	-0.21" (-5.34mm)	51st Driest	Driest since: 1937	1936
May–Aug 1939 4-Month	15.98" (405.89mm)	16.19" (411.23mm)	-0.21" (-5.34mm)	78th Wettest	Wettest since: 1938	1915
Apr–Aug 1939 5-Month	21.17" (537.72mm)	20.10" (510.54mm)	1.07" (27.18mm)	75th Driest	Driest since: 1937	1930
	21.17" (537.72mm)	20.10" (510.54mm)	1.07" (27.18mm)	54th Wettest	Wettest since: 1938	2015
	Ties: 1967
Mar–Aug 1939 6-Month	25.21" (640.33mm)	23.91" (607.31mm)	1.30" (33.02mm)	74th Driest	Driest since: 1937	1930
Mar–Aug 1939 6-Month	25.21" (640.33mm)	23.91" (607.31mm)	1.30" (33.02mm)	55th Wettest	Wettest since: 1938	2015
Feb–Aug 1939 7-Month	30.44" (773.18mm)	26.58" (675.13mm)	3.86" (98.05mm)	105th Driest	Driest since: 1937	1930
Feb–Aug 1939 7-Month	30.44" (773.18mm)	26.58" (675.13mm)	3.86" (98.05mm)	24th Wettest	Wettest since: 1938	2019
Jan–Aug 1939 8-Month	34.29" (870.97mm)	29.63" (752.60mm)	4.66" (118.37mm)	111th Driest	Driest since: 1938	1936
Jan–Aug 1939 8-Month	34.29" (870.97mm)	29.63" (752.60mm)	4.66" (118.37mm)	18th Wettest	Wettest since: 1935	2019
Dec 1938–Aug 1939 9-Month	36.14" (917.96mm)	32.72" (831.09mm)	3.42" (86.87mm)	94th Driest	Driest since: 1936	1936
Dec 1938–Aug 1939 9-Month	36.14" (917.96mm)	32.72" (831.09mm)	3.42" (86.87mm)	34th Wettest	Wettest since: 1938	2019
Nov 1938–Aug 1939 10-Month	39.68" (1,007.87mm)	35.86" (910.84mm)	3.82" (97.03mm)	101st Driest	Driest since: 1938	1936
Nov 1938–Aug 1939 10-Month	39.68" (1,007.87mm)	35.86" (910.84mm)	3.82" (97.03mm)	27th Wettest	Wettest since: 1935	2019
Oct 1938–Aug 1939 11-Month	40.61" (1,031.49mm)	38.78" (985.01mm)	1.83" (46.48mm)	74th Driest	Driest since: 1936	1936
Oct 1938–Aug 1939 11-Month	40.61" (1,031.49mm)	38.78" (985.01mm)	1.83" (46.48mm)	54th Wettest	Wettest since: 1938	2019
Sep 1938–Aug 1939 12-Month	43.58" (1,106.93mm)	42.24" (1,072.90mm)	1.34" (34.03mm)	67th Driest	Driest since: 1936	1936
Sep 1938–Aug 1939 12-Month	43.58" (1,106.93mm)	42.24" (1,072.90mm)	1.34" (34.03mm)	61st Wettest	Wettest since: 1938	2019
Mar 1938–Aug 1939 18-Month	71.42" (1,814.07mm)	66.13" (1,679.70mm)	5.29" (134.37mm)	96th Driest	Driest since: 1938	1931
Mar 1938–Aug 1939 18-Month	71.42" (1,814.07mm)	66.13" (1,679.70mm)	5.29" (134.37mm)	32nd Wettest	Wettest since: 1929	2019
Sep 1937–Aug 1939 24-Month	88.01" (2,235.45mm)	84.47" (2,145.54mm)	3.54" (89.91mm)	76th Driest	Driest since: 1937	1941
Sep 1937–Aug 1939 24-Month	88.01" (2,235.45mm)	84.47" (2,145.54mm)	3.54" (89.91mm)	51st Wettest	Wettest since: 1938	2020
Sep 1936–Aug 1939 36-Month	136.47" (3,466.34mm)	126.74" (3,219.20mm)	9.73" (247.14mm)	99th Driest	Driest since: 1938	1941
Sep 1936–Aug 1939 36-Month	136.47" (3,466.34mm)	126.74" (3,219.20mm)	9.73" (247.14mm)	27th Wettest	Wettest since: 1929	2020
Sep 1935–Aug 1939 48-Month	167.80" (4,262.12mm)	168.98" (4,292.09mm)	-1.18" (-29.97mm)	49th Driest	Driest since: 1937	1956
Sep 1935–Aug 1939 48-Month	167.80" (4,262.12mm)	168.98" (4,292.09mm)	-1.18" (-29.97mm)	76th Wettest	Wettest since: 1938	2022
Sep 1934–Aug 1939 60-Month	216.39" (5,496.31mm)	211.20" (5,364.48mm)	5.19" (131.83mm)	72nd Driest	Driest since: 1938	1934
Sep 1934–Aug 1939 60-Month	216.39" (5,496.31mm)	211.20" (5,364.48mm)	5.19" (131.83mm)	52nd Wettest	Wettest since: 1930	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published March 2023, retrieved on March 27, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings