Nights at or below 0 C (32 F) in Chicago

Chicago has had nights with a minimum temperature at or below 0 C (32 F) in 68 years, most in 1964 with 150. Days per year, season span, streaks and every date.

Key Facts for Chicago

Chicago has had nights with a minimum temperature at or below 0 C (32 F) in 68 years, 8,452 days in all.
The most in one year was 150 days in 1964.
In 2026, the latest year on file, there were 71 such days.
The earliest first date in a year was 1 January 1959.
The latest last date in a year was 31 December 1960.
The longest run inside a single year was 95 days in 1961.
2 years with under 90 percent of days observed are left out of these rankings.

Days per Year

68 years, 8,452 days

Days per year in Chicago with a minimum temperature at or below 0 C (32 F). The line is the decade average. The most was 150 in 1964. Grey bars are years with under 90 percent of days observed, left out of rankings.

Nights at or below 0 C (32 F) per year in Chicago
Year	Days	Decade average
1959	137	137
1960	137	138.1
1961	145	138.1
1962	141	138.1
1963	142	138.1
1964	150	138.1
1965	133	138.1
1966	145	138.1
1967	128	138.1
1968	122	138.1
1969	138	138.1
1970	116	123.7
1971	121	123.7
1972	132	123.7
1973	100	123.7
1974	118	123.7
1975	125	123.7
1976	136	123.7
1977	113	123.7
1978	141	123.7
1979	135	123.7
1980	148	136.1
1981	138	136.1
1982	135	136.1
1983	139	136.1
1984	141	136.1
1985	128	136.1
1986	132	136.1
1987	126	136.1
1988	140	136.1
1989	134	136.1
1990	127	124.7
1991	130	124.7
1992	129	124.7
1993	132	124.7
1994	112	124.7
1995	133	124.7
1996	148	124.7
1997	130	124.7
1998	92	124.7
1999	114	124.7
2000	126	122.9
2001	122	122.9
2002	122	122.9
2003	128	122.9
2004	120	122.9
2005	118	122.9
2006	115	122.9
2007	124	122.9
2008	138	122.9
2009	116	122.9
2010	120	119.3
2011	113	119.3
2012	100	119.3
2013	138	119.3
2014	134	119.3
2015	113	119.3
2016	108	119.3
2017	102	119.3
2018	134	119.3
2019	131	119.3
2020	103	95.3
2021	107	95.3
2022	110	95.3
2023	91	95.3
2024	85	95.3
2025	100	95.3
2026	71	95.3

Season Span

earliest 1 January, latest 31 December

For each year, a bar from the first to the last day in Chicago meeting 0 C (32 F). Long bars mean a long season.

First to last qualifying date each year in Chicago
Year	First date	Last date
1959	1959-01-01	1959-12-31
1960	1960-01-01	1960-12-31
1961	1961-01-01	1961-12-31
1962	1962-01-01	1962-12-31
1963	1963-01-01	1963-12-31
1964	1964-01-01	1964-12-31
1965	1965-01-02	1965-12-31
1966	1966-01-01	1966-12-31
1967	1967-01-01	1967-12-31
1968	1968-01-01	1968-12-31
1969	1969-01-01	1969-12-31
1970	1970-01-01	1970-12-31
1971	1971-01-01	1971-12-31
1972	1972-01-02	1972-12-31
1973	1973-01-01	1973-12-31
1974	1974-01-01	1974-12-30
1975	1975-01-01	1975-12-31
1976	1976-01-02	1976-12-31
1977	1977-01-01	1977-12-31
1978	1978-01-01	1978-12-31
1979	1979-01-01	1979-12-31
1980	1980-01-01	1980-12-31
1981	1981-01-01	1981-12-31
1982	1982-01-01	1982-12-31
1983	1983-01-01	1983-12-31
1984	1984-01-01	1984-12-31
1985	1985-01-01	1985-12-31
1986	1986-01-01	1986-12-31
1987	1987-01-01	1987-12-31
1988	1988-01-01	1988-12-31
1989	1989-01-01	1989-12-31
1990	1990-01-01	1990-12-31
1991	1991-01-01	1991-12-31
1992	1992-01-01	1992-12-31
1993	1993-01-01	1993-12-31
1994	1994-01-01	1994-12-31
1995	1995-01-01	1995-12-31
1996	1996-01-01	1996-12-31
1997	1997-01-05	1997-12-31
1998	1998-01-01	1998-12-31
1999	1999-01-01	1999-12-31
2000	2000-01-03	2000-12-31
2001	2001-01-01	2001-12-31
2002	2002-01-01	2002-12-31
2003	2003-01-01	2003-12-31
2004	2004-01-01	2004-12-31
2005	2005-01-01	2005-12-31
2006	2006-01-01	2006-12-27
2007	2007-01-01	2007-12-31
2008	2008-01-01	2008-12-31
2009	2009-01-01	2009-12-31
2010	2010-01-01	2010-12-29
2011	2011-01-01	2011-12-31
2012	2012-01-01	2012-12-31
2013	2013-01-01	2013-12-31
2014	2014-01-01	2014-12-31
2015	2015-01-01	2015-12-31
2016	2016-01-01	2016-12-31
2017	2017-01-01	2017-12-31
2018	2018-01-01	2018-12-31
2019	2019-01-01	2019-12-31
2020	2020-01-01	2020-12-31
2021	2021-01-01	2021-12-30
2022	2022-01-01	2022-12-31
2023	2023-01-02	2023-12-31
2024	2024-01-01	2024-12-30
2025	2025-01-01	2025-12-31
2026	2026-01-01	2026-05-02

Every Year

Nights at or below 0 C (32 F) per year in Chicago
Year	Days	First date	Last date	Longest streak in year	Coverage
2026	71	1 January 2026	2 May 2026	33 days	Incomplete, not ranked
2025	100	1 January 2025	31 December 2025	28 days	Complete
2024	85	1 January 2024	30 December 2024	13 days	Complete
2023	91	2 January 2023	31 December 2023	20 days	Complete
2022	110	1 January 2022	31 December 2022	46 days	Complete
2021	107	1 January 2021	30 December 2021	46 days	Complete
2020	103	1 January 2020	31 December 2020	21 days	Complete
2019	131	1 January 2019	31 December 2019	26 days	Complete
2018	134	1 January 2018	31 December 2018	18 days	Complete
2017	102	1 January 2017	31 December 2017	29 days	Complete
2016	108	1 January 2016	31 December 2016	23 days	Complete
2015	113	1 January 2015	31 December 2015	10 days	Complete
2014	134	1 January 2014	31 December 2014	73 days	Complete
2013	138	1 January 2013	31 December 2013	53 days	Complete
2012	100	1 January 2012	31 December 2012	21 days	Complete
2011	113	1 January 2011	31 December 2011	46 days	Complete
2010	120	1 January 2010	29 December 2010	30 days	Complete
2009	116	1 January 2009	31 December 2009	50 days	Complete
2008	138	1 January 2008	31 December 2008	68 days	Complete
2007	124	1 January 2007	31 December 2007	58 days	Complete
2006	115	1 January 2006	27 December 2006	37 days	Complete
2005	118	1 January 2005	31 December 2005	24 days	Complete
2004	120	1 January 2004	31 December 2004	48 days	Complete
2003	128	1 January 2003	31 December 2003	41 days	Complete
2002	122	1 January 2002	31 December 2002	17 days	Complete
2001	122	1 January 2001	31 December 2001	34 days	Complete
2000	126	3 January 2000	31 December 2000	73 days	Complete
1999	114	1 January 1999	31 December 1999	16 days	Complete
1998	92	1 January 1998	31 December 1998	37 days	Complete
1997	130	5 January 1997	31 December 1997	44 days	Complete
1996	148	1 January 1996	31 December 1996	21 days	Complete
1995	133	1 January 1995	31 December 1995	55 days	Complete
1994	112	1 January 1994	31 December 1994	24 days	Complete
1993	132	1 January 1993	31 December 1993	34 days	Complete
1992	129	1 January 1992	31 December 1992	33 days	Complete
1991	130	1 January 1991	31 December 1991	15 days	Complete
1990	127	1 January 1990	31 December 1990	47 days	Complete
1989	134	1 January 1989	31 December 1989	38 days	Complete
1988	140	1 January 1988	31 December 1988	36 days	Complete
1987	126	1 January 1987	31 December 1987	25 days	Complete
1986	132	1 January 1986	31 December 1986	30 days	Complete
1985	128	1 January 1985	31 December 1985	47 days	Complete
1984	141	1 January 1984	31 December 1984	54 days	Complete
1983	139	1 January 1983	31 December 1983	60 days	Complete
1982	135	1 January 1982	31 December 1982	13 days	Complete
1981	138	1 January 1981	31 December 1981	69 days	Complete
1980	148	1 January 1980	31 December 1980	48 days	Complete
1979	135	1 January 1979	31 December 1979	22 days	Complete
1978	141	1 January 1978	31 December 1978	95 days	Complete
1977	113	1 January 1977	31 December 1977	19 days	Complete
1976	136	2 January 1976	31 December 1976	53 days	Complete
1975	125	1 January 1975	31 December 1975	37 days	Complete
1974	118	1 January 1974	30 December 1974	18 days	Complete
1973	100	1 January 1973	31 December 1973	23 days	Complete
1972	132	2 January 1972	31 December 1972	41 days	Complete
1971	121	1 January 1971	31 December 1971	8 days	Complete
1970	116	1 January 1970	31 December 1970	56 days	Complete
1969	138	1 January 1969	31 December 1969	51 days	Complete
1968	122	1 January 1968	31 December 1968	36 days	Complete
1967	128	1 January 1967	31 December 1967	37 days	Complete
1966	145	1 January 1966	31 December 1966	42 days	Complete
1965	133	2 January 1965	31 December 1965	39 days	Complete
1964	150	1 January 1964	31 December 1964	37 days	Complete
1963	142	1 January 1963	31 December 1963	52 days	Complete
1962	141	1 January 1962	31 December 1962	20 days	Complete
1961	145	1 January 1961	31 December 1961	95 days	Complete
1960	137	1 January 1960	31 December 1960	69 days	Complete
1959	137	1 January 1959	31 December 1959	33 days	Complete

Decade averages for Nights at or below 0 C (32 F) in Chicago
Decade	Average days per year	Years counted
1950s	137.0	1
1960s	138.1	10
1970s	123.7	10
1980s	136.1	10
1990s	124.7	10
2000s	122.9	10
2010s	119.3	10
2020s	99.3	6

Compare with your own threshold in the threshold explorer. Fahrenheit thresholds are converted to tenths of a degree Celsius once, rounding half up.

Download the Data

Data for Nights at or below 0 C (32 F) in Chicago, by year: CSV or JSON. Field meanings are on the data page.

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 from the threaded city record.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).