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 2018

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
March 2018
1-Month 		38.6°F
(3.7°C)		 39.1°F
(3.9°C)		 -0.5°F
(-0.2°C)		 58th Coolest
Coolest since:
 1960
71st Warmest
Warmest since:
 2012
Feb–Mar 2018
2-Month 		33.8°F
(1.0°C)		 33.6°F
(0.9°C)		 0.2°F
(0.1°C)		 68th Coolest
Coolest since:
 1899
61st Warmest
Warmest since:
 2012
Ties: 1932, 1985, 2022
Jan–Mar 2018
3-Month 		30.2°F
(-1.0°C)		 30.3°F
(-0.9°C)		 -0.1°F
(-0.1°C)		 61st Coolest
Coolest since:
 1912
68th Warmest
Warmest since:
 2012
Dec 2017–Mar 2018
4-Month 		30.0°F
(-1.1°C)		 29.9°F
(-1.2°C)		 0.1°F
(0.1°C)		 63rd Coolest
Coolest since:
 1978
65th Warmest
Warmest since:
 2012
Nov 2017–Mar 2018
5-Month 		32.0°F
(0.0°C)		 31.9°F
(-0.1°C)		 0.1°F
(0.1°C)		 66th Coolest
Coolest since:
 1912
62nd Warmest
Warmest since:
 2012
Ties: 1911, 1941
Oct 2017–Mar 2018
6-Month 		36.2°F
(2.3°C)		 35.7°F
(2.1°C)		 0.5°F
(0.2°C)		 71st Coolest
Coolest since:
 1912, 1978
57th Warmest
Warmest since:
 2012
Ties: 1911
Sep 2017–Mar 2018
7-Month 		40.9°F
(4.9°C)		 40.0°F
(4.4°C)		 0.9°F
(0.5°C)		 81st Coolest
Coolest since:
 1978
47th Warmest
Warmest since:
 2017
Ties: 1945, 1949, 1981
Aug 2017–Mar 2018
8-Month 		44.5°F
(6.9°C)		 44.2°F
(6.8°C)		 0.3°F
(0.1°C)		 68th Coolest
Coolest since:
 1978
60th Warmest
Warmest since:
 2017
Ties: 1927, 2011
Jul 2017–Mar 2018
9-Month 		48.0°F
(8.9°C)		 47.8°F
(8.8°C)		 0.2°F
(0.1°C)		 62nd Coolest
Coolest since:
 1978
66th Warmest
Warmest since:
 2012
Ties: 1908, 1915, 1927, 1984, 1988
Jun 2017–Mar 2018
10-Month 		50.5°F
(10.3°C)		 50.2°F
(10.1°C)		 0.3°F
(0.2°C)		 68th Coolest
Coolest since:
 1904
60th Warmest
Warmest since:
 1932, 2012, 2017
Ties: 1928, 1984
May 2017–Mar 2018
11-Month 		51.5°F
(10.8°C)		 51.2°F
(10.7°C)		 0.3°F
(0.1°C)		 68th Coolest
Coolest since:
 1918, 1977
60th Warmest
Warmest since:
 2012, 2017
Ties: 1956
Apr 2017–Mar 2018
12-Month 		51.9°F
(11.1°C)		 51.3°F
(10.7°C)		 0.6°F
(0.4°C)		 79th Coolest
Coolest since:
 1918
49th Warmest
Warmest since:
 2017
Ties: 1897
Oct 2016–Mar 2018
18-Month 		48.3°F
(9.1°C)		 46.1°F
(7.8°C)		 2.2°F
(1.3°C)		 118th Coolest
Coolest since:
 1979
9th Warmest
Warmest since:
 2017
Ties: 2012
Apr 2016–Mar 2018
24-Month 		53.3°F
(11.8°C)		 51.2°F
(10.7°C)		 2.1°F
(1.1°C)		 120th Coolest
Coolest since:
 1905
7th Warmest
Warmest since:
 2017
Apr 2015–Mar 2018
36-Month 		53.7°F
(12.1°C)		 51.2°F
(10.7°C)		 2.5°F
(1.4°C)		 125th Coolest
Coolest since:
 1979
1st Warmest
Warmest to Date
 2018
Apr 2014–Mar 2018
48-Month 		52.7°F
(11.5°C)		 51.2°F
(10.7°C)		 1.5°F
(0.8°C)		 120th Coolest
Coolest since:
 1980
5th Warmest
Warmest since:
 1935
Ties: 2008, 2020
Apr 2013–Mar 2018
60-Month 		51.8°F
(11.0°C)		 51.2°F
(10.7°C)		 0.6°F
(0.3°C)		 88th Coolest
Coolest since:
 1906
36th Warmest
Warmest since:
 1935
Ties: 1925, 1945, 1946, 1993, 2000, 2001, 2005, 2010

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