- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On October 4 in this location the average high temperature is 67.8 °F (19.9 °C). The lowest recored high temperature was 48.9 °F (9.4 °C) in 1980 and the highest recored high temperature was 88.0 °F (31.1 °C) in 1967. The high temperature is usually* between 61.9 °F (16.6 °C) and 73.8 °F (23.2 °C). About a quarter of the time, the high temperature is less than 61.9 °F (16.6 °C), and another quarter of the time, the high temperature is greater than and 73.8 °F (23.2 °C). About 95% of the time, the high temperature has been between 50.5 °F (10.3 °C) and 85.2 °F (29.5 °C).
Low Temperatures
On October 4 in this location the average low temperature is 52.7 °F (11.5 °C). The lowest recored low temperature was 33.1 °F (0.6 °C) in 1989 and the lowest recored low temperature was 71.4 °F (21.9 °C) in 2023. The low temperature is usually* between 47.0 °F (8.3 °C) and 58.4 °F (14.7 °C). About a quarter of the time, the low temperature is less than 47.0 °F (8.3 °C), and another quarter of the time, the low temperature is greater than and 58.4 °F (14.7 °C). About 95% of the time, the low temperature has been between 36.2 °F (2.3 °C) and 69.2 °F (20.7 °C).
Frost
On October 4 in this location expect the temperatures to drop below freezing for a risk of frost about 0.7% 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 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