Divisional Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Illinois, Climate Division 8. Southwest

Average Temperature Rankings, August 1931

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Record Coolest
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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
August 1931 1-Month	75.4°F (24.1°C)	76.0°F (24.4°C)	-0.6°F (-0.3°C)	46th Coolest	Coolest since: 1929	1915
	75.4°F (24.1°C)	76.0°F (24.4°C)	-0.6°F (-0.3°C)	83rd Warmest	Warmest since: 1930	1936
	Ties: 1907
Jul–Aug 1931 2-Month	77.9°F (25.5°C)	77.0°F (25.0°C)	0.9°F (0.5°C)	93rd Coolest	Coolest since: 1929	1967
Jul–Aug 1931 2-Month	77.9°F (25.5°C)	77.0°F (25.0°C)	0.9°F (0.5°C)	36th Warmest	Warmest since: 1930	1936
Jun–Aug 1931 3-Month	77.7°F (25.4°C)	75.9°F (24.4°C)	1.8°F (1.0°C)	106th Coolest	Coolest since: 1929	1915, 1927
	77.7°F (25.4°C)	75.9°F (24.4°C)	1.8°F (1.0°C)	23rd Warmest	Warmest since: 1930	1936
	Ties: 1932, 1988
May–Aug 1931 4-Month	73.6°F (23.1°C)	73.2°F (22.9°C)	0.4°F (0.2°C)	71st Coolest	Coolest since: 1929	1967
	73.6°F (23.1°C)	73.2°F (22.9°C)	0.4°F (0.2°C)	58th Warmest	Warmest since: 1930	1936
	Ties: 1939, 1957, 1965, 1975, 2021
Apr–Aug 1931 5-Month	70.0°F (21.1°C)	69.6°F (20.9°C)	0.4°F (0.2°C)	75th Coolest	Coolest since: 1929	1907
	70.0°F (21.1°C)	69.6°F (20.9°C)	0.4°F (0.2°C)	54th Warmest	Warmest since: 1930	2010
	Ties: 1981, 2021
Mar–Aug 1931 6-Month	64.9°F (18.3°C)	65.5°F (18.6°C)	-0.6°F (-0.3°C)	36th Coolest	Coolest since: 1928	1904
	64.9°F (18.3°C)	65.5°F (18.6°C)	-0.6°F (-0.3°C)	93rd Warmest	Warmest since: 1930	2012
	Ties: 1965, 1972, 2014
Feb–Aug 1931 7-Month	61.4°F (16.3°C)	61.1°F (16.2°C)	0.3°F (0.1°C)	71st Coolest	Coolest since: 1929	1904
	61.4°F (16.3°C)	61.1°F (16.2°C)	0.3°F (0.1°C)	58th Warmest	Warmest since: 1930	2012
	Ties: 1914, 1935, 1962, 1992
Jan–Aug 1931 8-Month	58.1°F (14.5°C)	57.3°F (14.1°C)	0.8°F (0.4°C)	86th Coolest	Coolest since: 1929	1912
	58.1°F (14.5°C)	57.3°F (14.1°C)	0.8°F (0.4°C)	43rd Warmest	Warmest since: 1930	2012
	Ties: 1992, 2019
Dec 1930–Aug 1931 9-Month	55.4°F (13.0°C)	54.8°F (12.7°C)	0.6°F (0.3°C)	79th Coolest	Coolest since: 1929	1904
	55.4°F (13.0°C)	54.8°F (12.7°C)	0.6°F (0.3°C)	49th Warmest	Warmest since: 1930	2012
	Ties: 1909, 1976, 1988, 2021
Nov 1930–Aug 1931 10-Month	54.4°F (12.4°C)	53.8°F (12.1°C)	0.6°F (0.3°C)	78th Coolest	Coolest since: 1929	1904
	54.4°F (12.4°C)	53.8°F (12.1°C)	0.6°F (0.3°C)	50th Warmest	Warmest since: 1930	2012
	Ties: 1911, 1913, 1942, 1972, 2019
Oct 1930–Aug 1931 11-Month	54.5°F (12.5°C)	54.1°F (12.3°C)	0.4°F (0.2°C)	72nd Coolest	Coolest since: 1929	1904
	54.5°F (12.5°C)	54.1°F (12.3°C)	0.4°F (0.2°C)	56th Warmest	Warmest since: 1930	2012
	Ties: 1916, 1988, 1990
Sep 1930–Aug 1931 12-Month	55.9°F (13.3°C)	55.4°F (13.0°C)	0.5°F (0.3°C)	75th Coolest	Coolest since: 1930	1904
	55.9°F (13.3°C)	55.4°F (13.0°C)	0.5°F (0.3°C)	53rd Warmest	Warmest since: 1925	2012
	Ties: 1896, 1916, 1923, 1933, 1976, 2008
Mar 1930–Aug 1931 18-Month	59.6°F (15.3°C)	58.7°F (14.8°C)	0.9°F (0.5°C)	93rd Coolest	Coolest since: 1930	1904
	59.6°F (15.3°C)	58.7°F (14.8°C)	0.9°F (0.5°C)	35th Warmest	Warmest since: 1922	2012
	Ties: 1974
Sep 1929–Aug 1931 24-Month	55.8°F (13.2°C)	55.4°F (13.0°C)	0.4°F (0.2°C)	84th Coolest	Coolest since: 1930	1979
	55.8°F (13.2°C)	55.4°F (13.0°C)	0.4°F (0.2°C)	43rd Warmest	Warmest since: 1923	2017
	Ties: 1901, 1909, 1947, 1974, 1986
Sep 1928–Aug 1931 36-Month	55.4°F (13.0°C)	55.4°F (13.0°C)	0.0°F (0.0°C)	55th Coolest	Coolest since: 1930	1979
	55.4°F (13.0°C)	55.4°F (13.0°C)	0.0°F (0.0°C)	71st Warmest	Warmest since: 1925	2018
	Ties: 1910, 1925, 1945, 1946, 1990
Sep 1927–Aug 1931 48-Month	55.4°F (13.0°C)	55.3°F (12.9°C)	0.1°F (0.1°C)	53rd Coolest	Coolest since: 1930	1980
	55.4°F (13.0°C)	55.3°F (12.9°C)	0.1°F (0.1°C)	72nd Warmest	Warmest since: 1925	2019
	Ties: 1914, 1921, 1947, 1950, 1953, 1986
Sep 1926–Aug 1931 60-Month	55.2°F (12.9°C)	55.3°F (12.9°C)	-0.1°F (0.0°C)	47th Coolest	Coolest since: 1930	1906
	55.2°F (12.9°C)	55.3°F (12.9°C)	-0.1°F (0.0°C)	77th Warmest	Warmest since: 1926	2020
	Ties: 1901, 1914, 1966, 1977, 1996

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published May 2023, retrieved on May 28, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings