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 December 2020. For more information, please see Climatological Rankings.
Illinois
Average Temperature Rankings, August 2018
View Period (Months):All1234567891011121824364860
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| Period | Value | 1901-2000 Mean |
Anomaly | Rank (1895-2020) |
Warmest/Coolest Since |
Record |
|---|---|---|---|---|---|---|
|
August 2018 1-Month |
74.7°F (23.7°C) | 73.4°F (23.0°C) |
1.3°F (0.7°C) | 96th Coolest | Coolest since: 2017 | 1915 |
| 31st Warmest | Warmest since: 2016 | 1947 | ||||
| Ties: 1926, 1935, 1984, 1991, 2006 | ||||||
|
Jul–Aug 2018 2-Month |
74.8°F (23.8°C) | 74.4°F (23.6°C) |
0.4°F (0.2°C) | 72nd Coolest | Coolest since: 2017 | 1915 |
| 55th Warmest | Warmest since: 2016 | 1936 | ||||
|
Jun–Aug 2018 3-Month |
74.9°F (23.8°C) | 73.5°F (23.1°C) |
1.4°F (0.7°C) | 101st Coolest | Coolest since: 2017 | 1915 |
| 26th Warmest | Warmest since: 2016 | 1936 | ||||
| Ties: 1919, 1930, 1944 | ||||||
|
May–Aug 2018 4-Month |
73.8°F (23.2°C) | 70.6°F (21.4°C) |
3.2°F (1.8°C) | 123rd Coolest | Coolest since: 2017 | 1915 |
| 4th Warmest | Warmest since: 2012 | 1934, 1936 | ||||
|
Apr–Aug 2018 5-Month |
68.0°F (20.0°C) | 66.8°F (19.3°C) |
1.2°F (0.7°C) | 96th Coolest | Coolest since: 2017 | 1907 |
| 31st Warmest | Warmest since: 2016 | 1934 | ||||
| Ties: 1900, 1911, 1980, 1986 | ||||||
|
Mar–Aug 2018 6-Month |
63.2°F (17.3°C) | 62.3°F (16.8°C) |
0.9°F (0.5°C) | 87th Coolest | Coolest since: 2015 | 1904, 1950, 1960 |
| 40th Warmest | Warmest since: 2017 | 2012 | ||||
| Ties: 1973, 1999 | ||||||
|
Feb–Aug 2018 7-Month |
58.7°F (14.8°C) | 57.5°F (14.2°C) |
1.2°F (0.6°C) | 94th Coolest | Coolest since: 2015 | 1904 |
| 33rd Warmest | Warmest since: 2017 | 2012 | ||||
| Ties: 1918, 1957, 1983, 1995, 2001 | ||||||
|
Jan–Aug 2018 8-Month |
54.4°F (12.4°C) | 53.5°F (11.9°C) |
0.9°F (0.5°C) | 82nd Coolest | Coolest since: 2015 | 1904, 1912 |
| 45th Warmest | Warmest since: 2017 | 2012 | ||||
| Ties: 1914, 1988 | ||||||
|
Dec 2017–Aug 2018 9-Month |
51.7°F (10.9°C) | 50.9°F (10.5°C) |
0.8°F (0.4°C) | 85th Coolest | Coolest since: 2015 | 1904 |
| 41st Warmest | Warmest since: 2017 | 2012 | ||||
| Ties: 1913, 1946, 1957, 1973, 2004 | ||||||
|
Nov 2017–Aug 2018 10-Month |
50.7°F (10.4°C) | 49.9°F (9.9°C) |
0.8°F (0.5°C) | 89th Coolest | Coolest since: 2015 | 1904 |
| 37th Warmest | Warmest since: 2017 | 2012 | ||||
| Ties: 1913 | ||||||
|
Oct 2017–Aug 2018 11-Month |
51.4°F (10.8°C) | 50.3°F (10.2°C) |
1.1°F (0.6°C) | 95th Coolest | Coolest since: 2015 | 1904 |
| 31st Warmest | Warmest since: 2017 | 2012 | ||||
| Ties: 1964 | ||||||
|
Sep 2017–Aug 2018 12-Month |
52.8°F (11.6°C) | 51.6°F (10.9°C) |
1.2°F (0.7°C) | 100th Coolest | Coolest since: 2015 | 1904 |
| 26th Warmest | Warmest since: 2017 | 2012 | ||||
| Ties: 1922, 1953 | ||||||
|
Mar 2017–Aug 2018 18-Month |
56.4°F (13.6°C) | 55.2°F (12.9°C) |
1.2°F (0.7°C) | 102nd Coolest | Coolest since: 2015 | 1904 |
| 24th Warmest | Warmest since: 2017 | 2012 | ||||
|
Sep 2016–Aug 2018 24-Month |
54.0°F (12.2°C) | 51.6°F (10.9°C) |
2.4°F (1.3°C) | 121st Coolest | Coolest since: 2016 | 1905 |
| 4th Warmest | Warmest since: 2017 | 2017 | ||||
| Ties: 1999, 2000 | ||||||
|
Sep 2015–Aug 2018 36-Month |
54.4°F (12.4°C) | 51.6°F (10.9°C) |
2.8°F (1.5°C) | 123rd Coolest | Coolest since: 2017 | 1979 |
| 1st Warmest | Warmest to Date | 2018 | ||||
|
Sep 2014–Aug 2018 48-Month |
53.5°F (11.9°C) | 51.6°F (10.9°C) |
1.9°F (1.0°C) | 121st Coolest | Coolest since: 2017 | 1905 |
| 2nd Warmest | Warmest to Date | 2019 | ||||
|
Sep 2013–Aug 2018 60-Month |
52.7°F (11.5°C) | 51.6°F (10.9°C) |
1.1°F (0.6°C) | 106th Coolest | Coolest since: 2017 | 1906 |
| 16th Warmest | Warmest since: 2016 | 2020 | ||||
| Ties: 1956, 2001, 2005, 2010, 2016 | ||||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published January 2021, retrieved on January 26, 2021 from https://www.ncdc.noaa.gov/cag/