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 March 2021. For more information, please see Climatological Rankings.
Illinois, Climate Division 8. Southwest
Average Temperature Rankings, May 1999
View Period (Months):All1234567891011121824364860
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| Period | Value | 1901-2000 Mean |
Anomaly | Rank (1895-2020) |
Warmest/Coolest Since |
Record |
|---|---|---|---|---|---|---|
|
May 1999 1-Month |
65.7°F (18.7°C) | 65.1°F (18.4°C) |
0.6°F (0.3°C) | 66th Coolest | Coolest since: 1997 | 1917, 1924 |
| 61st Warmest | Warmest since: 1998 | 2018 | ||||
| Ties: 1974 | ||||||
|
Apr–May 1999 2-Month |
62.2°F (16.8°C) | 60.2°F (15.7°C) |
2.0°F (1.1°C) | 102nd Coolest | Coolest since: 1997 | 1907 |
| 25th Warmest | Warmest since: 1998 | 1896 | ||||
| Ties: 1906, 1934, 2019 | ||||||
|
Mar–May 1999 3-Month |
55.4°F (13.0°C) | 55.0°F (12.8°C) |
0.4°F (0.2°C) | 66th Coolest | Coolest since: 1997 | 1960 |
| 61st Warmest | Warmest since: 1998 | 2012 | ||||
|
Feb–May 1999 4-Month |
52.2°F (11.2°C) | 50.0°F (10.0°C) |
2.2°F (1.2°C) | 108th Coolest | Coolest since: 1997 | 1978 |
| 19th Warmest | Warmest since: 1998 | 2012 | ||||
| Ties: 1954, 1955, 1974 | ||||||
|
Jan–May 1999 5-Month |
48.3°F (9.1°C) | 46.2°F (7.9°C) |
2.1°F (1.2°C) | 102nd Coolest | Coolest since: 1997 | 1978 |
| 25th Warmest | Warmest since: 1998 | 2012 | ||||
| Ties: 1954 | ||||||
|
Dec 1998–May 1999 6-Month |
46.6°F (8.1°C) | 44.3°F (6.8°C) |
2.3°F (1.3°C) | 111th Coolest | Coolest since: 1997 | 1978 |
| 15th Warmest | Warmest since: 1998 | 2012 | ||||
| Ties: 1987 | ||||||
|
Nov 1998–May 1999 7-Month |
46.9°F (8.3°C) | 44.3°F (6.8°C) |
2.6°F (1.5°C) | 114th Coolest | Coolest since: 1998 | 1978 |
| 12th Warmest | Warmest since: 1998 | 2012 | ||||
| Ties: 1998 | ||||||
|
Oct 1998–May 1999 8-Month |
48.5°F (9.2°C) | 45.9°F (7.7°C) |
2.6°F (1.5°C) | 117th Coolest | Coolest since: 1998 | 1978 |
| 9th Warmest | Warmest since: 1991 | 2012 | ||||
|
Sep 1998–May 1999 9-Month |
51.3°F (10.7°C) | 48.5°F (9.2°C) |
2.8°F (1.5°C) | 119th Coolest | Coolest since: 1998 | 1978 |
| 7th Warmest | Warmest since: 1932 | 2012 | ||||
| Ties: 2006 | ||||||
|
Aug 1998–May 1999 10-Month |
53.9°F (12.2°C) | 51.3°F (10.7°C) |
2.6°F (1.5°C) | 119th Coolest | Coolest since: 1998 | 1978 |
| 7th Warmest | Warmest since: 1932 | 2012 | ||||
|
Jul 1998–May 1999 11-Month |
56.1°F (13.4°C) | 53.7°F (12.1°C) |
2.4°F (1.3°C) | 119th Coolest | Coolest since: 1998 | 1918 |
| 7th Warmest | Warmest since: 1932 | 2012 | ||||
|
Jun 1998–May 1999 12-Month |
57.7°F (14.3°C) | 55.4°F (13.0°C) |
2.3°F (1.3°C) | 119th Coolest | Coolest since: 1998 | 1904, 1918 |
| 7th Warmest | Warmest since: 1955 | 2012 | ||||
| Ties: 1955 | ||||||
|
Dec 1997–May 1999 18-Month |
54.3°F (12.4°C) | 51.6°F (10.9°C) |
2.7°F (1.5°C) | 121st Coolest | Coolest since: 1998 | 1979 |
| 4th Warmest | Warmest to Date | 2017 | ||||
|
Jun 1997–May 1999 24-Month |
57.1°F (13.9°C) | 55.4°F (13.0°C) |
1.7°F (0.9°C) | 115th Coolest | Coolest since: 1998 | 1905, 1978 |
| 10th Warmest | Warmest since: 1992 | 2017 | ||||
| Ties: 1954, 1992, 2006 | ||||||
|
Jun 1996–May 1999 36-Month |
56.2°F (13.4°C) | 55.4°F (13.0°C) |
0.8°F (0.4°C) | 98th Coolest | Coolest since: 1998 | 1979 |
| 26th Warmest | Warmest since: 1992 | 2018 | ||||
| Ties: 1922, 1943, 1974, 2005, 2009 | ||||||
|
Jun 1995–May 1999 48-Month |
55.8°F (13.2°C) | 55.4°F (13.0°C) |
0.4°F (0.2°C) | 76th Coolest | Coolest since: 1998 | 1980 |
| 47th Warmest | Warmest since: 1993 | 2019 | ||||
| Ties: 1925, 1974, 2016 | ||||||
|
Jun 1994–May 1999 60-Month |
55.9°F (13.3°C) | 55.4°F (13.0°C) |
0.5°F (0.3°C) | 82nd Coolest | Coolest since: 1998 | 1979, 1980, 1981 |
| 40th Warmest | Warmest since: 1992 | 2020 | ||||
| Ties: 1945, 1946, 1989, 1990 | ||||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Divisional Time Series, published April 2021, retrieved on April 20, 2021 from https://www.ncdc.noaa.gov/cag/