- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On March 20 in this location the average high temperature is 46.2 °F (7.9 °C). The lowest recored high temperature was 25.0 °F (-3.9 °C) in 1965 and the highest recored high temperature was 75.7 °F (24.3 °C) in 2012. The high temperature is usually* between 38.9 °F (3.9 °C) and 53.4 °F (11.9 °C). About a quarter of the time, the high temperature is less than 38.9 °F (3.9 °C), and another quarter of the time, the high temperature is greater than and 53.4 °F (11.9 °C). About 95% of the time, the high temperature has been between 25.2 °F (-3.8 °C) and 67.2 °F (19.6 °C).
Low Temperatures
On March 20 in this location the average low temperature is 32.6 °F (0.3 °C). The lowest recored low temperature was 3.9 °F (-15.6 °C) in 1965 and the lowest recored low temperature was 63.0 °F (17.2 °C) in 1976. The low temperature is usually* between 27.0 °F (-2.8 °C) and 38.3 °F (3.5 °C). About a quarter of the time, the low temperature is less than 27.0 °F (-2.8 °C), and another quarter of the time, the low temperature is greater than and 38.3 °F (3.5 °C). About 95% of the time, the low temperature has been between 16.2 °F (-8.8 °C) and 49.0 °F (9.5 °C).
Frost
On March 20 in this location expect the temperatures to drop below freezing for a risk of frost about 47.0% 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 2007 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 2003
- 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 1989 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