Divisional Rankings

Divisional Data Info
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 3. West

Average Temperature Rankings, March 2021

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2023)		Warmest/Coolest
Since		Record
March 2021
1-Month		45.6°F
(7.6°C)		39.1°F
(3.9°C)		6.5°F
(3.7°C)		117th Coolest
Coolest since:
1960
13th Warmest
Warmest since:
2012
Feb–Mar 2021
2-Month		32.0°F
(0.0°C)		33.6°F
(0.9°C)		-1.6°F
(-0.9°C)		46th Coolest
Coolest since:
1899
84th Warmest
Warmest since:
2012
Ties: 1972
Jan–Mar 2021
3-Month		30.6°F
(-0.8°C)		30.3°F
(-0.9°C)		0.3°F
(0.1°C)		70th Coolest
Coolest since:
1912
60th Warmest
Warmest since:
2012
Ties: 1903, 1934, 1957
Dec 2020–Mar 2021
4-Month		30.8°F
(-0.7°C)		29.9°F
(-1.2°C)		0.9°F
(0.5°C)		81st Coolest
Coolest since:
1978
48th Warmest
Warmest since:
2012
Ties: 1897, 1952, 1957, 1967, 1989
Nov 2020–Mar 2021
5-Month		34.0°F
(1.1°C)		31.9°F
(-0.1°C)		2.1°F
(1.2°C)		96th Coolest
Coolest since:
1912
33rd Warmest
Warmest since:
2012
Ties: 1966
Oct 2020–Mar 2021
6-Month		36.7°F
(2.6°C)		35.7°F
(2.1°C)		1.0°F
(0.5°C)		88th Coolest
Coolest since:
1912, 1978
41st Warmest
Warmest since:
2012
Ties: 1909, 1964
Sep 2020–Mar 2021
7-Month		40.7°F
(4.8°C)		40.0°F
(4.4°C)		0.7°F
(0.4°C)		76th Coolest
Coolest since:
1978
53rd Warmest
Warmest since:
2017
Ties: 1941, 2008
Aug 2020–Mar 2021
8-Month		44.7°F
(7.1°C)		44.2°F
(6.8°C)		0.5°F
(0.3°C)		71st Coolest
Coolest since:
1978
58th Warmest
Warmest since:
2017
Jul 2020–Mar 2021
9-Month		48.3°F
(9.1°C)		47.8°F
(8.8°C)		0.5°F
(0.3°C)		75th Coolest
Coolest since:
1978
54th Warmest
Warmest since:
2012
Ties: 1945, 1966, 2013
Jun 2020–Mar 2021
10-Month		50.8°F
(10.4°C)		50.2°F
(10.1°C)		0.6°F
(0.3°C)		81st Coolest
Coolest since:
1904
48th Warmest
Warmest since:
1932, 2012, 2017
Ties: 2004, 2005, 2011
May 2020–Mar 2021
11-Month		51.7°F
(10.9°C)		51.2°F
(10.7°C)		0.5°F
(0.2°C)		76th Coolest
Coolest since:
1918, 1977
53rd Warmest
Warmest since:
2012, 2017
Ties: 1909, 1933, 1941, 1972, 1990, 2004
Apr 2020–Mar 2021
12-Month		51.5°F
(10.8°C)		51.3°F
(10.7°C)		0.2°F
(0.1°C)		67th Coolest
Coolest since:
1918
62nd Warmest
Warmest since:
2017
Ties: 1941
Oct 2019–Mar 2021
18-Month		46.8°F
(8.2°C)		46.1°F
(7.8°C)		0.7°F
(0.4°C)		92nd Coolest
Coolest since:
1979
36th Warmest
Warmest since:
2017
Ties: 1920, 1943, 1953, 1956, 1984, 1989, 2001
Apr 2019–Mar 2021
24-Month		52.0°F
(11.1°C)		51.2°F
(10.7°C)		0.8°F
(0.4°C)		94th Coolest
Coolest since:
1905
34th Warmest
Warmest since:
2017
Ties: 2002, 2005, 2016, 2020, 2022
Apr 2018–Mar 2021
36-Month		51.8°F
(11.0°C)		51.2°F
(10.7°C)		0.6°F
(0.3°C)		85th Coolest
Coolest since:
1979
42nd Warmest
Warmest since:
2018
Ties: 1916, 1937, 1999, 2009
Apr 2017–Mar 2021
48-Month		51.8°F
(11.0°C)		51.2°F
(10.7°C)		0.6°F
(0.3°C)		87th Coolest
Coolest since:
1980
39th Warmest
Warmest since:
1935
Ties: 1943, 1944, 1988, 2017
Apr 2016–Mar 2021
60-Month		52.4°F
(11.3°C)		51.2°F
(10.7°C)		1.2°F
(0.6°C)		116th Coolest
Coolest since:
1906
9th Warmest
Warmest since:
1935
Ties: 1942, 1992, 2019

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