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 5. East

Average Temperature Rankings, August 1939

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
August 1939 1-Month	71.2°F (21.8°C)	72.1°F (22.3°C)	-0.9°F (-0.5°C)	40th Coolest	Coolest since: 1929	1915
	71.2°F (21.8°C)	72.1°F (22.3°C)	-0.9°F (-0.5°C)	89th Warmest	Warmest since: 1938	1947
	Ties: 1919, 1923, 1952
Jul–Aug 1939 2-Month	72.6°F (22.6°C)	73.3°F (22.9°C)	-0.7°F (-0.3°C)	47th Coolest	Coolest since: 1929	1915
	72.6°F (22.6°C)	73.3°F (22.9°C)	-0.7°F (-0.3°C)	82nd Warmest	Warmest since: 1938	1936
	Ties: 1909, 1978
Jun–Aug 1939 3-Month	72.4°F (22.4°C)	72.3°F (22.4°C)	0.1°F (0.0°C)	65th Coolest	Coolest since: 1935	1915
	72.4°F (22.4°C)	72.3°F (22.4°C)	0.1°F (0.0°C)	64th Warmest	Warmest since: 1938	1936
	Ties: 1918, 1986
May–Aug 1939 4-Month	70.4°F (21.3°C)	69.5°F (20.8°C)	0.9°F (0.5°C)	87th Coolest	Coolest since: 1938	1915
	70.4°F (21.3°C)	69.5°F (20.8°C)	0.9°F (0.5°C)	42nd Warmest	Warmest since: 1936	1934
	Ties: 1931, 1962, 2021
Apr–Aug 1939 5-Month	65.5°F (18.6°C)	65.5°F (18.6°C)	0.0°F (0.0°C)	53rd Coolest	Coolest since: 1935	1907
	65.5°F (18.6°C)	65.5°F (18.6°C)	0.0°F (0.0°C)	76th Warmest	Warmest since: 1938	1991
	Ties: 1918, 1969, 1978, 2013, 2014
Mar–Aug 1939 6-Month	61.2°F (16.2°C)	61.0°F (16.1°C)	0.2°F (0.1°C)	60th Coolest	Coolest since: 1937	1904
	61.2°F (16.2°C)	61.0°F (16.1°C)	0.2°F (0.1°C)	69th Warmest	Warmest since: 1938	2012
	Ties: 1895, 1905, 1908, 1929, 1956, 1963, 1968, 2003
Feb–Aug 1939 7-Month	56.4°F (13.6°C)	56.2°F (13.4°C)	0.2°F (0.2°C)	66th Coolest	Coolest since: 1937	1904
	56.4°F (13.6°C)	56.2°F (13.4°C)	0.2°F (0.2°C)	63rd Warmest	Warmest since: 1938	2012
	Ties: 1943, 2019
Jan–Aug 1939 8-Month	53.2°F (11.8°C)	52.2°F (11.2°C)	1.0°F (0.6°C)	87th Coolest	Coolest since: 1937	1904, 1912
	53.2°F (11.8°C)	52.2°F (11.2°C)	1.0°F (0.6°C)	42nd Warmest	Warmest since: 1938	2012
	Ties: 2021
Dec 1938–Aug 1939 9-Month	50.5°F (10.3°C)	49.5°F (9.7°C)	1.0°F (0.6°C)	86th Coolest	Coolest since: 1937	1904
	50.5°F (10.3°C)	49.5°F (9.7°C)	1.0°F (0.6°C)	42nd Warmest	Warmest since: 1938	2012
	Ties: 2004
Nov 1938–Aug 1939 10-Month	49.7°F (9.8°C)	48.5°F (9.2°C)	1.2°F (0.6°C)	94th Coolest	Coolest since: 1938	1904
	49.7°F (9.8°C)	48.5°F (9.2°C)	1.2°F (0.6°C)	34th Warmest	Warmest since: 1938	2012
	Ties: 1938
Oct 1938–Aug 1939 11-Month	50.3°F (10.2°C)	49.0°F (9.4°C)	1.3°F (0.8°C)	99th Coolest	Coolest since: 1938	1904
	50.3°F (10.2°C)	49.0°F (9.4°C)	1.3°F (0.8°C)	29th Warmest	Warmest since: 1934	2012
	Ties: 1934
Sep 1938–Aug 1939 12-Month	51.7°F (10.9°C)	50.3°F (10.2°C)	1.4°F (0.7°C)	103rd Coolest	Coolest since: 1938	1904
	51.7°F (10.9°C)	50.3°F (10.2°C)	1.4°F (0.7°C)	25th Warmest	Warmest since: 1934	2012
	Ties: 1953, 1988, 2021
Mar 1938–Aug 1939 18-Month	55.4°F (13.0°C)	53.9°F (12.2°C)	1.5°F (0.8°C)	106th Coolest	Coolest since: 1938	1904
	55.4°F (13.0°C)	53.9°F (12.2°C)	1.5°F (0.8°C)	22nd Warmest	Warmest since: 1934	2012
	Ties: 1995, 2007
Sep 1937–Aug 1939 24-Month	51.3°F (10.7°C)	50.3°F (10.2°C)	1.0°F (0.5°C)	97th Coolest	Coolest since: 1938	1905
	51.3°F (10.7°C)	50.3°F (10.2°C)	1.0°F (0.5°C)	30th Warmest	Warmest since: 1935	2017
	Ties: 1935, 1949
Sep 1936–Aug 1939 36-Month	51.0°F (10.6°C)	50.3°F (10.2°C)	0.7°F (0.4°C)	87th Coolest	Coolest since: 1938	1904
	51.0°F (10.6°C)	50.3°F (10.2°C)	0.7°F (0.4°C)	39th Warmest	Warmest since: 1935	2018
	Ties: 1942, 1949
Sep 1935–Aug 1939 48-Month	50.6°F (10.3°C)	50.3°F (10.2°C)	0.3°F (0.1°C)	67th Coolest	Coolest since: 1938	1905
	50.6°F (10.3°C)	50.3°F (10.2°C)	0.3°F (0.1°C)	58th Warmest	Warmest since: 1937	2019
	Ties: 1937, 1945, 2016
Sep 1934–Aug 1939 60-Month	50.6°F (10.3°C)	50.3°F (10.2°C)	0.3°F (0.1°C)	67th Coolest	Coolest since: 1938	1906
	50.6°F (10.3°C)	50.3°F (10.2°C)	0.3°F (0.1°C)	57th Warmest	Warmest since: 1938	2020
	Ties: 1922, 1924, 1938, 1946, 1953

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2023, retrieved on March 29, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings