- Latitude: 42.0
- Longitude: -87.5
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 67.1 °F (19.5 °C) in 2017. The high temperature is usually* between 29.9 °F (-1.1 °C) and 44.9 °F (7.2 °C). About a quarter of the time, the high temperature is less than 29.9 °F (-1.1 °C), and another quarter of the time, the high temperature is greater than and 44.9 °F (7.2 °C). About 95% of the time, the high temperature has been between 15.7 °F (-9.1 °C) and 59.1 °F (15.1 °C).
Low Temperatures
On February 18 in this location the average low temperature is 23.9 °F (-4.5 °C). The lowest recored low temperature was -4.9 °F (-20.5 °C) in 1978 and the lowest recored low temperature was 48.7 °F (9.3 °C) in 2017. The low temperature is usually* between 16.5 °F (-8.6 °C) and 31.4 °F (-0.3 °C). About a quarter of the time, the low temperature is less than 16.5 °F (-8.6 °C), and another quarter of the time, the low temperature is greater than and 31.4 °F (-0.3 °C). About 95% of the time, the low temperature has been between 2.4 °F (-16.5 °C) and 45.5 °F (7.5 °C).
Frost
On February 18 in this location expect the temperatures to drop below freezing for a risk of frost about 76.8% 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 — Integrated Surface Dataset (ISD) station ID: 997338 — from year 2007 to 2025
- NORTHERLY ISLAND — Integrated Surface Dataset (ISD) station ID: 998499 — from year 2013 to 2025
- FOSTER AVE CHICAGO — Integrated Surface Dataset (ISD) station ID: 998497 — from year 2015 to 2019
- CHICAGO/MEIGS — Integrated Surface Dataset (ISD) station ID: 725346 — from year 2000 to 2003
- CHICAGO/MEIGS — Integrated Surface Dataset (ISD) station ID: 725346 — Weather Bureau Army Navy (WBAN): 94866 — from year 1973 to 1999
- 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 MEIGS FIELD — Weather Bureau Army Navy (WBAN): 94866 — from year 1966 to 1970
- DUNNE CRIB IL. — Integrated Surface Dataset (ISD) station ID: 744650 — from year 1944 to 1944