- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On September 27 in this location the average high temperature is 69.8 °F (21.0 °C). The lowest recored high temperature was 53.1 °F (11.7 °C) in 1984 and the highest recored high temperature was 90.0 °F (32.2 °C) in 2017. The high temperature is usually* between 64.5 °F (18.0 °C) and 75.2 °F (24.0 °C). About a quarter of the time, the high temperature is less than 64.5 °F (18.0 °C), and another quarter of the time, the high temperature is greater than and 75.2 °F (24.0 °C). About 95% of the time, the high temperature has been between 54.3 °F (12.4 °C) and 85.3 °F (29.6 °C).
Low Temperatures
On September 27 in this location the average low temperature is 54.8 °F (12.7 °C). The lowest recored low temperature was 34.0 °F (1.1 °C) in 1991 and the lowest recored low temperature was 69.6 °F (20.9 °C) in 2021. The low temperature is usually* between 49.8 °F (9.9 °C) and 59.8 °F (15.4 °C). About a quarter of the time, the low temperature is less than 49.8 °F (9.9 °C), and another quarter of the time, the low temperature is greater than and 59.8 °F (15.4 °C). About 95% of the time, the low temperature has been between 40.3 °F (4.6 °C) and 69.3 °F (20.7 °C).
Frost
On September 27 in this location expect the temperatures to drop below freezing for a risk of frost about 0.1% 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