Chicago Botanic Garden Threshold Days by Year (USC00111497)
18 fixed thresholds counted per year at Chicago Botanic Garden (USC00111497): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Chicago Botanic Garden Thresholds
- Chicago Botanic Garden: days with a maximum temperature at or above 30 C (86 F) in 37 years, most in 2012 with 60.
- Chicago Botanic Garden: days with a maximum temperature at or above 90 F (32.2 C) in 37 years, most in 1988 with 43.
- Chicago Botanic Garden: days with a maximum temperature at or below 0 C (32 F) in 37 years, most in 2014 with 74.
- Chicago Botanic Garden: days with 10 mm (0.39 in) or more of precipitation in 37 years, most in 2011 with 43.
- 18 fixed thresholds have at least one qualifying day at Chicago Botanic Garden.
Days at or above 30 C (86 F)
37 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1982 | 11 | 29.4 |
| 1983 | 41 | 29.4 |
| 1984 | 32 | 29.4 |
| 1985 | 22 | 29.4 |
| 1986 | 17 | 29.4 |
| 1987 | 45 | 29.4 |
| 1988 | 52 | 29.4 |
| 1989 | 15 | 29.4 |
| 1990 | 27 | 32.8 |
| 1991 | 50 | 32.8 |
| 1992 | 13 | 32.8 |
| 1993 | 21 | 32.8 |
| 1994 | 41 | 32.8 |
| 1995 | 42 | 32.8 |
| 1996 | 24 | 32.8 |
| 1997 | 30 | 32.8 |
| 1998 | 41 | 32.8 |
| 1999 | 39 | 32.8 |
| 2000 | 33 | 35.1 |
| 2001 | 39 | 35.1 |
| 2002 | 51 | 35.1 |
| 2003 | 29 | 35.1 |
| 2004 | 27 | 35.1 |
| 2005 | 48 | 35.1 |
| 2006 | 30 | 35.1 |
| 2007 | 46 | 35.1 |
| 2008 | 26 | 35.1 |
| 2009 | 22 | 35.1 |
| 2010 | 54 | 38.4 |
| 2011 | 38 | 38.4 |
| 2012 | 60 | 38.4 |
| 2013 | 29 | 38.4 |
| 2014 | 22 | 38.4 |
| 2015 | 27 | 38.4 |
| 2016 | 44 | 38.4 |
| 2017 | 31 | 38.4 |
| 2018 | 41 | 38.4 |
| Year | First date | Last date |
|---|---|---|
| 1982 | 1982-05-12 | 1982-08-04 |
| 1983 | 1983-06-12 | 1983-09-11 |
| 1984 | 1984-05-19 | 1984-09-20 |
| 1985 | 1985-05-15 | 1985-09-20 |
| 1986 | 1986-04-27 | 1986-08-17 |
| 1987 | 1987-05-11 | 1987-09-07 |
| 1988 | 1988-05-29 | 1988-09-18 |
| 1989 | 1989-06-01 | 1989-09-09 |
| 1990 | 1990-04-25 | 1990-09-14 |
| 1991 | 1991-05-14 | 1991-09-16 |
| 1992 | 1992-05-02 | 1992-08-26 |
| 1993 | 1993-05-10 | 1993-08-31 |
| 1994 | 1994-04-25 | 1994-09-17 |
| 1995 | 1995-06-07 | 1995-09-17 |
| 1996 | 1996-05-18 | 1996-08-26 |
| 1997 | 1997-06-21 | 1997-10-08 |
| 1998 | 1998-05-16 | 1998-09-27 |
| 1999 | 1999-06-06 | 1999-09-27 |
| 2000 | 2000-05-06 | 2000-09-20 |
| 2001 | 2001-05-01 | 2001-09-09 |
| 2002 | 2002-04-16 | 2002-10-01 |
| 2003 | 2003-04-16 | 2003-08-29 |
| 2004 | 2004-04-19 | 2004-09-24 |
| 2005 | 2005-06-06 | 2005-10-05 |
| 2006 | 2006-05-29 | 2006-08-26 |
| 2007 | 2007-05-15 | 2007-10-09 |
| 2008 | 2008-06-06 | 2008-09-03 |
| 2009 | 2009-04-25 | 2009-08-19 |
| 2010 | 2010-05-24 | 2010-09-24 |
| 2011 | 2011-05-12 | 2011-09-13 |
| 2012 | 2012-03-21 | 2012-09-06 |
| 2013 | 2013-05-01 | 2013-09-12 |
| 2014 | 2014-05-09 | 2014-09-06 |
| 2015 | 2015-05-08 | 2015-09-08 |
| 2016 | 2016-05-25 | 2016-09-20 |
| 2017 | 2017-05-17 | 2017-09-27 |
| 2018 | 2018-05-02 | 2018-10-04 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 37 | 60 | 2012 | 41 |
| 35 C (95 F): Days | 30 | 25 | 1988 | 6 |
| 40 C (104 F): Days | 3 | 2 | 2012 | 2 |
| 90 F (32.2 C): Days | 37 | 43 | 1988 | 23 |
| 100 F (37.8 C): Days | 10 | 7 | 1988 | 5 |
| 0 C (32 F): Ice days (max | 37 | 74 | 2014 | 37 |
| 0 C (32 F): Frost days (min | 36 | 150 | 2018 | 150 |
| -10 C (14 F): Days with min | 36 | 62 | 2014 | 29 |
| -20 C (-4 F): Days with min | 29 | 19 | 2014 | 3 |
| -30 C (-22 F): Days with min | 3 | 2 | 1982 | 2 |
| 20 C (68 F): Tropical nights (min | 36 | 41 | 2012 | 26 |
| 25 C (77 F): Days with min | 13 | 7 | 1988 | 3 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 37 | 43 | 2011 | 42 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 37 | 17 | 2018 | 17 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 32 | 4 | 1986 | 4 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 4 | 1 | 1987 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 31 | 8 | 2014 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 2 | 1 | 1990 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1982.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2025-12-31).