High Temperatures
On December 17 in Chicago, IL (Illinois), USA, the average high temperature is 34.9 °F (1.6 °C). The lowest recored high temperature was 8.1 °F (-13.3 °C) in 1945 and the highest recored high temperature was 60.1 °F (15.6 °C) in 1977. The high temperature is usually* between 27.6 °F (-2.4 °C) and 42.3 °F (5.7 °C). About a quarter of the time, the high temperature is less than 27.6 °F (-2.4 °C), and another quarter of the time, the high temperature is greater than and 42.3 °F (5.7 °C). About 95% of the time, the high temperature has been between 13.6 °F (-10.2 °C) and 56.3 °F (13.5 °C).
Low Temperatures
On December 17 in Chicago, IL (Illinois), USA, the average low temperature is 22.2 °F (-5.4 °C). The lowest recored low temperature was -11.0 °F (-23.9 °C) in 1951 and the lowest recored low temperature was 48.0 °F (8.9 °C) in 2006. The low temperature is usually* between 14.0 °F (-10.0 °C) and 30.4 °F (-0.9 °C). About a quarter of the time, the low temperature is less than 14.0 °F (-10.0 °C), and another quarter of the time, the low temperature is greater than and 30.4 °F (-0.9 °C). About 95% of the time, the low temperature has been between -1.6 °F (-18.7 °C) and 46.0 °F (7.8 °C).
Frost
On December 17 in Chicago, IL (Illinois), USA, expect the temperatures to drop below freezing for a risk of frost about 79.0% of the time.
Data Source(s)
The data used to compute the average high/low temperatures for this location were taken from the following stations:
- NORTHERLY ISLAND — Integrated Surface Dataset (ISD) station ID: 998499 — from year 2012 to 2024
- CHICAGO — Integrated Surface Dataset (ISD) station ID: 997338 — from year 2005 to 2024
- 9087044 - CALUMET IL — Integrated Surface Dataset (ISD) station ID: 997255 — from year 2004 to 2024
- CHICAGO O'HARE INTERNATIONAL — Integrated Surface Dataset (ISD) station ID: 725300 — Weather Bureau Army Navy (WBAN): 94846 — from year 1946 to 2024
- CHICAGO MIDWAY INTL ARPT — Integrated Surface Dataset (ISD) station ID: 725340 — Weather Bureau Army Navy (WBAN): 14819 — from year 1973 to 2024
- FOSTER AVE CHICAGO — Integrated Surface Dataset (ISD) station ID: 998497 — from year 2015 to 2017
- CHICAGO/MEIGS — Integrated Surface Dataset (ISD) station ID: 725346 — from year 2000 to 2002
- CHICAGO/MEIGS — Integrated Surface Dataset (ISD) station ID: 725346 — Weather Bureau Army Navy (WBAN): 94866 — from year 1973 to 1999
- WILMETTE (MARINES)& — Integrated Surface Dataset (ISD) station ID: 725307 — from year 1976 to 1995
- CHICAGO / CALUMET COAST GUARD — Integrated Surface Dataset (ISD) station ID: 725344 — from year 1994 to 1995
- NAVAL AIR STATION — Integrated Surface Dataset (ISD) station ID: 725306 — Weather Bureau Army Navy (WBAN): 14855 — from year 1973 to 1994
- WILMETTE (CGS) — Integrated Surface Dataset (ISD) station ID: 722417 — from year 1987 to 1990
- CALUMET (CGS) — Integrated Surface Dataset (ISD) station ID: 722418 — from year 1987 to 1989
- CHICAGO OHARE INTL AP — Weather Bureau Army Navy (WBAN): 94846 — from year 1970 to 1972
- NAVAL AIR STATION — Weather Bureau Army Navy (WBAN): 14855 — from year 1945 to 1972
- CHICAGO MIDWAY AP — Weather Bureau Army Navy (WBAN): 14819 — from year 1948 to 1972
- CHICAGO MEIGS FIELD — Weather Bureau Army Navy (WBAN): 94866 — from year 1966 to 1969
- PARK RIDGE AF — Weather Bureau Army Navy (WBAN): 14810 — from year 1949 to 1957
- DUNNE CRIB IL. — Integrated Surface Dataset (ISD) station ID: 744650 — from year 1943 to 1943