- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On June 20 in this location the average high temperature is 79.1 °F (26.2 °C). The lowest recored high temperature was 54.0 °F (12.2 °C) in 1992 and the highest recored high temperature was 102.9 °F (39.4 °C) in 1988. The high temperature is usually* between 73.0 °F (22.8 °C) and 85.1 °F (29.5 °C). About a quarter of the time, the high temperature is less than 73.0 °F (22.8 °C), and another quarter of the time, the high temperature is greater than and 85.1 °F (29.5 °C). About 95% of the time, the high temperature has been between 61.5 °F (16.4 °C) and 96.6 °F (35.9 °C).
Low Temperatures
On June 20 in this location the average low temperature is 62.7 °F (17.0 °C). The lowest recored low temperature was 45.0 °F (7.2 °C) in 1948 and the lowest recored low temperature was 86.5 °F (30.3 °C) in 2012. The low temperature is usually* between 57.9 °F (14.4 °C) and 67.5 °F (19.7 °C). About a quarter of the time, the low temperature is less than 57.9 °F (14.4 °C), and another quarter of the time, the low temperature is greater than and 67.5 °F (19.7 °C). About 95% of the time, the low temperature has been between 48.8 °F (9.3 °C) and 76.6 °F (24.8 °C).
Frost
On June 20 in this location expect the temperatures to drop below freezing for a risk of frost about 0.0% 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 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 2012 to 2019
- 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
- NAVAL AIR STATION — Integrated Surface Dataset (ISD) station ID: 725306 — Weather Bureau Army Navy (WBAN): 14855 — from year 1973 to 1994
- WILMETTE (MARINES)& — Integrated Surface Dataset (ISD) station ID: 725307 — from year 1976 to 1994
- WILMETTE (CGS) — Integrated Surface Dataset (ISD) station ID: 722417 — from year 1987 to 1989
- 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 1970