- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On April 9 in this location the average high temperature is 53.1 °F (11.7 °C). The lowest recored high temperature was 33.1 °F (0.6 °C) in 1950 and the highest recored high temperature was 75.0 °F (23.9 °C) in 1991. The high temperature is usually* between 45.0 °F (7.2 °C) and 61.2 °F (16.2 °C). About a quarter of the time, the high temperature is less than 45.0 °F (7.2 °C), and another quarter of the time, the high temperature is greater than and 61.2 °F (16.2 °C). About 95% of the time, the high temperature has been between 29.6 °F (-1.3 °C) and 76.6 °F (24.8 °C).
Low Temperatures
On April 9 in this location the average low temperature is 37.8 °F (3.2 °C). The lowest recored low temperature was 21.2 °F (-6.0 °C) in 1997 and the lowest recored low temperature was 58.6 °F (14.8 °C) in 2024. The low temperature is usually* between 32.7 °F (0.4 °C) and 42.8 °F (6.0 °C). About a quarter of the time, the low temperature is less than 32.7 °F (0.4 °C), and another quarter of the time, the low temperature is greater than and 42.8 °F (6.0 °C). About 95% of the time, the low temperature has been between 23.2 °F (-4.9 °C) and 52.4 °F (11.3 °C).
Frost
On April 9 in this location expect the temperatures to drop below freezing for a risk of frost about 21.9% 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 2015 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 1988 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 1970
- DUNNE CRIB IL. — Integrated Surface Dataset (ISD) station ID: 744650 — from year 1944 to 1944