- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On February 20 in this location the average high temperature is 38.8 °F (3.8 °C). The lowest recored high temperature was 12.0 °F (-11.1 °C) in 1966 and the highest recored high temperature was 65.3 °F (18.5 °C) in 2018. The high temperature is usually* between 31.3 °F (-0.4 °C) and 46.3 °F (8.0 °C). About a quarter of the time, the high temperature is less than 31.3 °F (-0.4 °C), and another quarter of the time, the high temperature is greater than and 46.3 °F (8.0 °C). About 95% of the time, the high temperature has been between 17.0 °F (-8.3 °C) and 60.6 °F (15.9 °C).
Low Temperatures
On February 20 in this location the average low temperature is 24.3 °F (-4.3 °C). The lowest recored low temperature was -4.0 °F (-20.0 °C) in 2015 and the lowest recored low temperature was 55.6 °F (13.1 °C) in 2018. The low temperature is usually* between 16.9 °F (-8.4 °C) and 31.8 °F (-0.1 °C). About a quarter of the time, the low temperature is less than 16.9 °F (-8.4 °C), and another quarter of the time, the low temperature is greater than and 31.8 °F (-0.1 °C). About 95% of the time, the low temperature has been between 2.7 °F (-16.3 °C) and 45.9 °F (7.7 °C).
Frost
On February 20 in this location expect the temperatures to drop below freezing for a risk of frost about 75.7% 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