Climate at a Glance
Divisional 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 May 2022. For more information, please see Climatological Rankings.
Illinois, Climate Division 3. West
Average Temperature Rankings, December 1999
View Period (Months):All1234567891011121824364860
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| Period | Value | 1901-2000 Mean |
Anomaly | Rank (1895-2021) |
Warmest/Coolest Since |
Record |
|---|---|---|---|---|---|---|
|
December 1999 1-Month |
31.3°F (-0.4°C) | 28.3°F (-2.1°C) |
3.0°F (1.7°C) | 81st Coolest | Coolest since: 1997 | 1983 |
| 47th Warmest | Warmest since: 1998 | 2015 | ||||
| Ties: 1948 | ||||||
|
Nov–Dec 1999 2-Month |
39.6°F (4.2°C) | 34.2°F (1.2°C) |
5.4°F (3.0°C) | 121st Coolest | Coolest since: 1998 | 2000 |
| 7th Warmest | Warmest since: 1998 | 1931 | ||||
| Ties: 1994, 1998 | ||||||
|
Oct–Dec 1999 3-Month |
44.6°F (7.0°C) | 41.0°F (5.0°C) |
3.6°F (2.0°C) | 115th Coolest | Coolest since: 1997 | 1976 |
| 13th Warmest | Warmest since: 1998 | 1931 | ||||
| Ties: 2011 | ||||||
|
Sep–Dec 1999 4-Month |
49.4°F (9.7°C) | 47.2°F (8.4°C) |
2.2°F (1.3°C) | 111th Coolest | Coolest since: 1997 | 1976 |
| 17th Warmest | Warmest since: 1998 | 1931 | ||||
| Ties: 1922, 1947 | ||||||
|
Aug–Dec 1999 5-Month |
53.9°F (12.2°C) | 52.6°F (11.4°C) |
1.3°F (0.8°C) | 102nd Coolest | Coolest since: 1997 | 1976 |
| 26th Warmest | Warmest since: 1998 | 1931 | ||||
| Ties: 1946, 1975, 2005 | ||||||
|
Jul–Dec 1999 6-Month |
58.0°F (14.4°C) | 56.5°F (13.6°C) |
1.5°F (0.8°C) | 108th Coolest | Coolest since: 1997 | 1976 |
| 20th Warmest | Warmest since: 1998 | 1931 | ||||
| Ties: 1930, 1971 | ||||||
|
Jun–Dec 1999 7-Month |
60.0°F (15.6°C) | 58.6°F (14.8°C) |
1.4°F (0.8°C) | 104th Coolest | Coolest since: 1997 | 1976 |
| 24th Warmest | Warmest since: 1998 | 1931 | ||||
| Ties: 1922, 1949, 1987 | ||||||
|
May–Dec 1999 8-Month |
60.4°F (15.8°C) | 59.0°F (15.0°C) |
1.4°F (0.8°C) | 101st Coolest | Coolest since: 1997 | 1917 |
| 27th Warmest | Warmest since: 1998 | 1931 | ||||
| Ties: 1914, 1930, 1954, 1965, 1971, 2005 | ||||||
|
Apr–Dec 1999 9-Month |
59.7°F (15.4°C) | 58.2°F (14.6°C) |
1.5°F (0.8°C) | 105th Coolest | Coolest since: 1997 | 1917 |
| 23rd Warmest | Warmest since: 1998 | 1931 | ||||
| Ties: 1922, 1939, 2011 | ||||||
|
Mar–Dec 1999 10-Month |
57.6°F (14.2°C) | 56.3°F (13.5°C) |
1.3°F (0.7°C) | 101st Coolest | Coolest since: 1997 | 1917 |
| 27th Warmest | Warmest since: 1998 | 2012 | ||||
| Ties: 1918, 1956, 1988 | ||||||
|
Feb–Dec 1999 11-Month |
55.7°F (13.2°C) | 53.7°F (12.1°C) |
2.0°F (1.1°C) | 115th Coolest | Coolest since: 1997 | 1917 |
| 13th Warmest | Warmest since: 1998 | 2012 | ||||
| Ties: 1941, 2005 | ||||||
|
Jan–Dec 1999 12-Month |
52.9°F (11.6°C) | 51.2°F (10.7°C) |
1.7°F (0.9°C) | 108th Coolest | Coolest since: 1997 | 1917 |
| 20th Warmest | Warmest since: 1998 | 2012 | ||||
| Ties: 1991, 2007 | ||||||
|
Jul 1998–Dec 1999 18-Month |
55.1°F (12.8°C) | 53.0°F (11.7°C) |
2.1°F (1.1°C) | 121st Coolest | Coolest since: 1998 | 1904 |
| 6th Warmest | Warmest since: 1998 | 2012 | ||||
| Ties: 1939, 1954, 1998 | ||||||
|
Jan 1998–Dec 1999 24-Month |
53.7°F (12.1°C) | 51.2°F (10.7°C) |
2.5°F (1.4°C) | 125th Coolest | Coolest since: 1998 | 1979 |
| 2nd Warmest | Warmest since: 1931 | 2017 | ||||
| Ties: 1922, 1931 | ||||||
|
Jan 1997–Dec 1999 36-Month |
52.6°F (11.4°C) | 51.2°F (10.7°C) |
1.4°F (0.7°C) | 111th Coolest | Coolest since: 1998 | 1905 |
| 15th Warmest | Warmest since: 1988 | 2017 | ||||
| Ties: 1935 | ||||||
|
Jan 1996–Dec 1999 48-Month |
51.8°F (11.0°C) | 51.2°F (10.7°C) |
0.6°F (0.3°C) | 84th Coolest | Coolest since: 1998 | 1905 |
| 41st Warmest | Warmest since: 1993 | 1934 | ||||
| Ties: 1992, 1993, 2009 | ||||||
|
Jan 1995–Dec 1999 60-Month |
51.6°F (10.9°C) | 51.2°F (10.7°C) |
0.4°F (0.2°C) | 75th Coolest | Coolest since: 1998 | 1905 |
| 49th Warmest | Warmest since: 1994 | 1934 | ||||
| Ties: 1948, 1989, 2014 | ||||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Divisional Time Series, published June 2022, retrieved on June 27, 2022 from https://www.ncdc.noaa.gov/cag/