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 November 2019. For more information, please see Climatological Rankings.
Illinois
Average Temperature Rankings, December 1999
View Period (Months):All1234567891011121824364860
Download:
| Period | Value | 1901-2000 Mean |
Anomaly | Rank (1895-2018) |
Warmest/Coolest Since |
Record |
|---|---|---|---|---|---|---|
|
December 1999 1-Month |
32.6°F (0.3°C) | 29.4°F (-1.4°C) |
3.2°F (1.7°C) | 90th Coolest | Coolest since: 1997 | 1983 |
| 35th Warmest | Warmest since: 1998 | 2015 | ||||
| Ties: 1952, 1970 | ||||||
|
Nov–Dec 1999 2-Month |
40.5°F (4.7°C) | 35.1°F (1.7°C) |
5.4°F (3.0°C) | 117th Coolest | Coolest since: 1998 | 1950 |
| 8th Warmest | Warmest since: 1994 | 2015 | ||||
|
Oct–Dec 1999 3-Month |
45.2°F (7.3°C) | 41.7°F (5.4°C) |
3.5°F (1.9°C) | 114th Coolest | Coolest since: 1997 | 1976 |
| 11th Warmest | Warmest since: 1998 | 1931 | ||||
|
Sep–Dec 1999 4-Month |
50.2°F (10.1°C) | 47.8°F (8.8°C) |
2.4°F (1.3°C) | 113th Coolest | Coolest since: 1997 | 1976 |
| 12th Warmest | Warmest since: 1998 | 1931 | ||||
| Ties: 1965 | ||||||
|
Aug–Dec 1999 5-Month |
54.5°F (12.5°C) | 52.9°F (11.6°C) |
1.6°F (0.9°C) | 104th Coolest | Coolest since: 1997 | 1976 |
| 21st Warmest | Warmest since: 1998 | 1931 | ||||
| Ties: 1965, 2003, 2005 | ||||||
|
Jul–Dec 1999 6-Month |
58.5°F (14.7°C) | 56.7°F (13.7°C) |
1.8°F (1.0°C) | 111th Coolest | Coolest since: 1997 | 1976 |
| 14th Warmest | Warmest since: 1998 | 1931 | ||||
| Ties: 1953, 2012 | ||||||
|
Jun–Dec 1999 7-Month |
60.5°F (15.8°C) | 58.8°F (14.9°C) |
1.7°F (0.9°C) | 108th Coolest | Coolest since: 1997 | 1917 |
| 17th Warmest | Warmest since: 1998 | 1931 | ||||
| Ties: 2005, 2012 | ||||||
|
May–Dec 1999 8-Month |
60.9°F (16.1°C) | 59.2°F (15.1°C) |
1.7°F (1.0°C) | 106th Coolest | Coolest since: 1997 | 1917 |
| 19th Warmest | Warmest since: 1998 | 1931 | ||||
| Ties: 1971, 1991 | ||||||
|
Apr–Dec 1999 9-Month |
60.2°F (15.7°C) | 58.4°F (14.7°C) |
1.8°F (1.0°C) | 108th Coolest | Coolest since: 1997 | 1917 |
| 17th Warmest | Warmest since: 1998 | 1931 | ||||
|
Mar–Dec 1999 10-Month |
58.0°F (14.4°C) | 56.5°F (13.6°C) |
1.5°F (0.8°C) | 106th Coolest | Coolest since: 1997 | 1917 |
| 19th Warmest | Warmest since: 1998 | 2012 | ||||
| Ties: 1953, 2017 | ||||||
|
Feb–Dec 1999 11-Month |
56.1°F (13.4°C) | 54.0°F (12.2°C) |
2.1°F (1.2°C) | 115th Coolest | Coolest since: 1997 | 1917 |
| 10th Warmest | Warmest since: 1998 | 2012 | ||||
| Ties: 1954 | ||||||
|
Jan–Dec 1999 12-Month |
53.5°F (11.9°C) | 51.6°F (10.9°C) |
1.9°F (1.0°C) | 107th Coolest | Coolest since: 1997 | 1917 |
| 18th Warmest | Warmest since: 1998 | 2012 | ||||
|
Jul 1998–Dec 1999 18-Month |
55.6°F (13.1°C) | 53.3°F (11.8°C) |
2.3°F (1.3°C) | 118th Coolest | Coolest since: 1998 | 1904 |
| 6th Warmest | Warmest since: 1998 | 2012 | ||||
| Ties: 1998 | ||||||
|
Jan 1998–Dec 1999 24-Month |
54.4°F (12.4°C) | 51.6°F (10.9°C) |
2.8°F (1.5°C) | 121st Coolest | Coolest since: 1998 | 1904, 1979 |
| 3rd Warmest | Warmest to Date | 2017 | ||||
|
Jan 1997–Dec 1999 36-Month |
53.2°F (11.8°C) | 51.6°F (10.9°C) |
1.6°F (0.9°C) | 112th Coolest | Coolest since: 1998 | 1905 |
| 11th Warmest | Warmest since: 1955 | 2017 | ||||
| Ties: 1923, 1932 | ||||||
|
Jan 1996–Dec 1999 48-Month |
52.5°F (11.4°C) | 51.6°F (10.9°C) |
0.9°F (0.5°C) | 100th Coolest | Coolest since: 1998 | 1905 |
| 22nd Warmest | Warmest since: 1993 | 2001, 2018 | ||||
| Ties: 1935, 1936, 1954, 1990, 1991, 1993, 2009 | ||||||
|
Jan 1995–Dec 1999 60-Month |
52.3°F (11.3°C) | 51.6°F (10.9°C) |
0.7°F (0.4°C) | 87th Coolest | Coolest since: 1998 | 1905 |
| 34th Warmest | Warmest since: 1994 | 2002 | ||||
| Ties: 1987, 1988, 1992 | ||||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published December 2019, retrieved on December 14, 2019 from https://www.ncdc.noaa.gov/cag/