- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On October 20 in this location the average high temperature is 61.9 °F (16.6 °C). The lowest recored high temperature was 38.8 °F (3.8 °C) in 1989 and the highest recored high temperature was 84.9 °F (29.4 °C) in 1953. The high temperature is usually* between 55.4 °F (13.0 °C) and 68.3 °F (20.2 °C). About a quarter of the time, the high temperature is less than 55.4 °F (13.0 °C), and another quarter of the time, the high temperature is greater than and 68.3 °F (20.2 °C). About 95% of the time, the high temperature has been between 43.2 °F (6.2 °C) and 80.6 °F (27.0 °C).
Low Temperatures
On October 20 in this location the average low temperature is 46.1 °F (7.8 °C). The lowest recored low temperature was 27.0 °F (-2.8 °C) in 1952 and the lowest recored low temperature was 68.0 °F (20.0 °C) in 1979. The low temperature is usually* between 40.5 °F (4.7 °C) and 51.7 °F (11.0 °C). About a quarter of the time, the low temperature is less than 40.5 °F (4.7 °C), and another quarter of the time, the low temperature is greater than and 51.7 °F (11.0 °C). About 95% of the time, the low temperature has been between 29.8 °F (-1.2 °C) and 62.4 °F (16.9 °C).
Frost
On October 20 in this location expect the temperatures to drop below freezing for a risk of frost about 4.5% 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 2005 to 2024
- NORTHERLY ISLAND — Integrated Surface Dataset (ISD) station ID: 998499 — from year 2012 to 2024
- FOSTER AVE CHICAGO — Integrated Surface Dataset (ISD) station ID: 998497 — from year 2015 to 2020
- 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
- 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
- NAVAL AIR STATION — Weather Bureau Army Navy (WBAN): 14855 — from year 1945 to 1972
- CHICAGO MEIGS FIELD — Weather Bureau Army Navy (WBAN): 94866 — from year 1966 to 1969
- DUNNE CRIB IL. — Integrated Surface Dataset (ISD) station ID: 744650 — from year 1943 to 1943