- Latitude: 42.121
- Longitude: -87.905
High Temperatures
On February 18 in this location the average high temperature is 37.4 °F (3.0 °C). The lowest recored high temperature was 7.5 °F (-13.6 °C) in 2015 and the highest recored high temperature was 70.0 °F (21.1 °C) in 2017. The high temperature is usually* between 29.8 °F (-1.2 °C) and 45.0 °F (7.2 °C). About a quarter of the time, the high temperature is less than 29.8 °F (-1.2 °C), and another quarter of the time, the high temperature is greater than and 45.0 °F (7.2 °C). About 95% of the time, the high temperature has been between 15.4 °F (-9.2 °C) and 59.4 °F (15.2 °C).
Low Temperatures
On February 18 in this location the average low temperature is 21.1 °F (-6.1 °C). The lowest recored low temperature was -8.0 °F (-22.2 °C) in 2006 and the lowest recored low temperature was 45.7 °F (7.6 °C) in 2017. The low temperature is usually* between 13.3 °F (-10.4 °C) and 28.9 °F (-1.7 °C). About a quarter of the time, the low temperature is less than 13.3 °F (-10.4 °C), and another quarter of the time, the low temperature is greater than and 28.9 °F (-1.7 °C). About 95% of the time, the low temperature has been between -1.5 °F (-18.6 °C) and 43.7 °F (6.5 °C).
Frost
On February 18 in this location expect the temperatures to drop below freezing for a risk of frost about 82.8% 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:
- CHICAGO O'HARE INTERNATIONAL — Integrated Surface Dataset (ISD) station ID: 725300 — Weather Bureau Army Navy (WBAN): 94846 — from year 1947 to 2025
- PALWAUKEE MUNICIPAL ARPT — Integrated Surface Dataset (ISD) station ID: 744665 — Weather Bureau Army Navy (WBAN): 04838 — from year 2006 to 2025
- WAUKEGAN HARBOR — Integrated Surface Dataset (ISD) station ID: 997735 — from year 2007 to 2025
- FOSTER AVE CHICAGO — Integrated Surface Dataset (ISD) station ID: 998497 — from year 2015 to 2019
- PALWAUKEE MUNI — Integrated Surface Dataset (ISD) station ID: 744665 — from year 1996 to 2005
- ANN ARBOR MUNICIPAL — Integrated Surface Dataset (ISD) station ID: 725374 — from year 1999 to 2005
- CHIGAGO-WAUKEE ARPT — Integrated Surface Dataset (ISD) station ID: 725339 — from year 2002 to 2002
- NAVAL AIR STATION — Integrated Surface Dataset (ISD) station ID: 725306 — Weather Bureau Army Navy (WBAN): 14855 — from year 1973 to 1995
- WILMETTE (MARINES)& — Integrated Surface Dataset (ISD) station ID: 725307 — from year 1976 to 1991
- WILMETTE (CGS) — Integrated Surface Dataset (ISD) station ID: 722417 — from year 1988 to 1990
- NAVAL AIR STATION — Weather Bureau Army Navy (WBAN): 14855 — from year 1946 to 1972
- CHICAGO OHARE INTL AP — Weather Bureau Army Navy (WBAN): 94846 — from year 1970 to 1972
- PARK RIDGE AF — Weather Bureau Army Navy (WBAN): 14810 — from year 1949 to 1958