- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On May 1 in this location the average high temperature is 63.0 °F (17.2 °C). The lowest recored high temperature was 44.4 °F (6.9 °C) in 2016 and the highest recored high temperature was 89.1 °F (31.7 °C) in 1992. The high temperature is usually* between 56.0 °F (13.3 °C) and 70.1 °F (21.2 °C). About a quarter of the time, the high temperature is less than 56.0 °F (13.3 °C), and another quarter of the time, the high temperature is greater than and 70.1 °F (21.2 °C). About 95% of the time, the high temperature has been between 42.5 °F (5.8 °C) and 83.6 °F (28.7 °C).
Low Temperatures
On May 1 in this location the average low temperature is 46.1 °F (7.9 °C). The lowest recored low temperature was 30.9 °F (-0.6 °C) in 1963 and the lowest recored low temperature was 68.0 °F (20.0 °C) in 2001. The low temperature is usually* between 41.5 °F (5.3 °C) and 50.7 °F (10.4 °C). About a quarter of the time, the low temperature is less than 41.5 °F (5.3 °C), and another quarter of the time, the low temperature is greater than and 50.7 °F (10.4 °C). About 95% of the time, the low temperature has been between 32.8 °F (0.4 °C) and 59.5 °F (15.3 °C).
Frost
On May 1 in this location expect the temperatures to drop below freezing for a risk of frost about 1.9% 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