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 2. Northeast

Average Temperature Rankings, September 2021

View Period (Months):
Download: CSV JSON XML
  • Record Coolest
  • Bottom ⅒
  • Bottom ⅓
  • Normal
  • Top ⅓
  • Top ⅒
  • Record Warmest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
September 2021
1-Month 		68.4°F
(20.2°C)		 63.7°F
(17.6°C)		 4.7°F
(2.6°C)		 120th Coolest
Coolest since:
 1918
9th Warmest
Warmest since:
 1897
Aug–Sep 2021
2-Month 		71.5°F
(21.9°C)		 67.4°F
(19.7°C)		 4.1°F
(2.2°C)		 126th Coolest
Coolest since:
 1902
3rd Warmest
Warmest since:
 1947
Jul–Sep 2021
3-Month 		72.0°F
(22.2°C)		 69.3°F
(20.7°C)		 2.7°F
(1.5°C)		 119th Coolest
Coolest since:
 1924
10th Warmest
Warmest since:
 1936
Jun–Sep 2021
4-Month 		72.1°F
(22.3°C)		 69.2°F
(20.7°C)		 2.9°F
(1.6°C)		 123rd Coolest
Coolest since:
 1915
6th Warmest
Warmest since:
 2005
Ties: 2016
May–Sep 2021
5-Month 		69.5°F
(20.8°C)		 67.1°F
(19.5°C)		 2.4°F
(1.3°C)		 114th Coolest
Coolest since:
 1924
15th Warmest
Warmest since:
 1921, 1988
Ties: 2007
Apr–Sep 2021
6-Month 		66.4°F
(19.1°C)		 63.9°F
(17.7°C)		 2.5°F
(1.4°C)		 119th Coolest
Coolest since:
 1907
10th Warmest
Warmest since:
 1921
Ties: 1998
Mar–Sep 2021
7-Month 		62.9°F
(17.2°C)		 59.9°F
(15.5°C)		 3.0°F
(1.7°C)		 124th Coolest
Coolest since:
 1924
5th Warmest
Warmest since:
 2012
Feb–Sep 2021
8-Month 		57.2°F
(14.0°C)		 55.5°F
(13.1°C)		 1.7°F
(0.9°C)		 110th Coolest
Coolest since:
 1904, 1917
19th Warmest
Warmest since:
 2012
Ties: 1911, 2002, 2020
Jan–Sep 2021
9-Month 		53.7°F
(12.1°C)		 51.7°F
(10.9°C)		 2.0°F
(1.2°C)		 112th Coolest
Coolest since:
 1904, 1912
17th Warmest
Warmest since:
 2012
Ties: 1973, 1983
Dec 2020–Sep 2021
10-Month 		51.4°F
(10.8°C)		 49.1°F
(9.5°C)		 2.3°F
(1.3°C)		 114th Coolest
Coolest since:
 1904
14th Warmest
Warmest since:
 2012
Ties: 1919, 2000
Nov 2020–Sep 2021
11-Month 		50.9°F
(10.5°C)		 48.1°F
(8.9°C)		 2.8°F
(1.6°C)		 118th Coolest
Coolest since:
 1904
10th Warmest
Warmest since:
 2012
Ties: 2000, 2010
Oct 2020–Sep 2021
12-Month 		50.7°F
(10.4°C)		 48.5°F
(9.2°C)		 2.2°F
(1.2°C)		 114th Coolest
Coolest since:
 1904
14th Warmest
Warmest since:
 2012
Ties: 1919, 2006
Apr 2020–Sep 2021
18-Month 		55.4°F
(13.0°C)		 53.6°F
(12.0°C)		 1.8°F
(1.0°C)		 113th Coolest
Coolest since:
 1904
15th Warmest
Warmest since:
 2012
Ties: 1991
Oct 2019–Sep 2021
24-Month 		50.5°F
(10.3°C)		 48.5°F
(9.2°C)		 2.0°F
(1.1°C)		 117th Coolest
Coolest since:
 1918
10th Warmest
Warmest since:
 2017
Ties: 1932, 2005, 2007, 2022
Oct 2018–Sep 2021
36-Month 		49.9°F
(9.9°C)		 48.4°F
(9.1°C)		 1.5°F
(0.8°C)		 108th Coolest
Coolest since:
 1979
18th Warmest
Warmest since:
 2000
Ties: 1921, 1932, 2019
Oct 2017–Sep 2021
48-Month 		49.8°F
(9.9°C)		 48.4°F
(9.1°C)		 1.4°F
(0.8°C)		 109th Coolest
Coolest since:
 1905, 1918
16th Warmest
Warmest since:
 2001, 2002, 2019
Ties: 1922, 1933, 1988
Oct 2016–Sep 2021
60-Month 		50.2°F
(10.1°C)		 48.4°F
(9.1°C)		 1.8°F
(1.0°C)		 120th Coolest
Coolest since:
 1905, 1906
4th Warmest
Warmest since:
 2002
Ties: 2008

Citing This Page