Climate at a Glance

Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of August 2021. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, September 1949

View Period (Months):All1234567891011121824364860
Download: xml csv json
  • Record Coolest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
September 1949
1-Month
60.4°F
(15.8°C)
66.2°F
(19.0°C)
-5.8°F
(-3.2°C)
2nd Coolest Coolest since: 1918 1918
125th Warmest Warmest since: 1948 1925, 1933
Aug–Sep 1949
2-Month
67.0°F
(19.4°C)
69.8°F
(21.0°C)
-2.8°F
(-1.6°C)
6th Coolest Coolest since: 1924 1967
121st Warmest Warmest since: 1948 1936
Ties: 1924, 1966
Jul–Sep 1949
3-Month
70.6°F
(21.4°C)
71.7°F
(22.1°C)
-1.1°F
(-0.7°C)
28th Coolest Coolest since: 1946 1967
99th Warmest Warmest since: 1948 1936
Ties: 1903, 1907, 1928, 1929, 1963
Jun–Sep 1949
4-Month
71.5°F
(21.9°C)
71.7°F
(22.1°C)
-0.2°F
(-0.2°C)
51st Coolest Coolest since: 1946 1915, 1924
76th Warmest Warmest since: 1948 1936
Ties: 1905, 1968, 2013
May–Sep 1949
5-Month
70.0°F
(21.1°C)
69.7°F
(20.9°C)
0.3°F
(0.2°C)
71st Coolest Coolest since: 1948 1924
56th Warmest Warmest since: 1944 1936
Ties: 1943, 2013, 2017, 2020
Apr–Sep 1949
6-Month
66.8°F
(19.3°C)
66.7°F
(19.3°C)
0.1°F
(0.0°C)
67th Coolest Coolest since: 1947 1907
60th Warmest Warmest since: 1948 2010
Ties: 1898, 1908, 1937, 1957, 1995, 2000
Mar–Sep 1949
7-Month
62.9°F
(17.2°C)
62.8°F
(17.1°C)
0.1°F
(0.1°C)
57th Coolest Coolest since: 1947 1924
70th Warmest Warmest since: 1948 2012
Ties: 1918, 1956, 1957, 1981
Feb–Sep 1949
8-Month
58.8°F
(14.9°C)
58.6°F
(14.8°C)
0.2°F
(0.1°C)
69th Coolest Coolest since: 1947 1904
58th Warmest Warmest since: 1948 2012
Ties: 1927, 1945, 1985, 2009
Jan–Sep 1949
9-Month
55.5°F
(13.1°C)
55.0°F
(12.8°C)
0.5°F
(0.3°C)
79th Coolest Coolest since: 1948 1904, 1912
48th Warmest Warmest since: 1946 2012
Ties: 1976, 1995, 2019
Dec 1948–Sep 1949
10-Month
53.2°F
(11.8°C)
52.4°F
(11.3°C)
0.8°F
(0.5°C)
83rd Coolest Coolest since: 1948 1904
43rd Warmest Warmest since: 1944 2012
Ties: 1908, 1913, 1976
Nov 1948–Sep 1949
11-Month
52.3°F
(11.3°C)
51.4°F
(10.8°C)
0.9°F
(0.5°C)
90th Coolest Coolest since: 1948 1904
36th Warmest Warmest since: 1942 2012
Ties: 1942
Oct 1948–Sep 1949
12-Month
52.3°F
(11.3°C)
51.7°F
(10.9°C)
0.6°F
(0.4°C)
86th Coolest Coolest since: 1948 1904
40th Warmest Warmest since: 1942 2012
Ties: 1898, 1913, 1972, 1986, 1990
Apr 1948–Sep 1949
18-Month
57.3°F
(14.1°C)
56.7°F
(13.7°C)
0.6°F
(0.4°C)
86th Coolest Coolest since: 1948 1904, 1918
40th Warmest Warmest since: 1942 2012
Ties: 1901, 1957, 1964, 2010
Oct 1947–Sep 1949
24-Month
52.1°F
(11.2°C)
51.7°F
(10.9°C)
0.4°F
(0.3°C)
87th Coolest Coolest since: 1948 1979
38th Warmest Warmest since: 1943 2017
Ties: 1943, 1973, 1976, 1986, 2010
Oct 1946–Sep 1949
36-Month
52.0°F
(11.1°C)
51.6°F
(10.9°C)
0.4°F
(0.2°C)
80th Coolest Coolest since: 1948 1979
44th Warmest Warmest since: 1944 2018
Ties: 1931, 1974, 1976, 1990, 2010
Oct 1945–Sep 1949
48-Month
52.0°F
(11.1°C)
51.6°F
(10.9°C)
0.4°F
(0.2°C)
79th Coolest Coolest since: 1948 1905
44th Warmest Warmest since: 1944 2019
Ties: 1940, 1976, 1986, 1998, 2011
Oct 1944–Sep 1949
60-Month
51.8°F
(11.0°C)
51.6°F
(10.9°C)
0.2°F
(0.1°C)
65th Coolest Coolest since: 1948 1906
57th Warmest Warmest since: 1948 2020
Ties: 1924, 1940, 1948

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published September 2021, retrieved on September 18, 2021 from https://www.ncdc.noaa.gov/cag/