- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On March 30 in this location the average high temperature is 50.4 °F (10.2 °C). The lowest recored high temperature was 26.1 °F (-3.3 °C) in 1969 and the highest recored high temperature was 86.0 °F (30.0 °C) in 1986. The high temperature is usually* between 42.2 °F (5.7 °C) and 58.6 °F (14.8 °C). About a quarter of the time, the high temperature is less than 42.2 °F (5.7 °C), and another quarter of the time, the high temperature is greater than and 58.6 °F (14.8 °C). About 95% of the time, the high temperature has been between 26.6 °F (-3.0 °C) and 74.2 °F (23.5 °C).
Low Temperatures
On March 30 in this location the average low temperature is 35.7 °F (2.1 °C). The lowest recored low temperature was 10.9 °F (-11.7 °C) in 1964 and the lowest recored low temperature was 68.0 °F (20.0 °C) in 1998. The low temperature is usually* between 30.2 °F (-1.0 °C) and 41.3 °F (5.2 °C). About a quarter of the time, the low temperature is less than 30.2 °F (-1.0 °C), and another quarter of the time, the low temperature is greater than and 41.3 °F (5.2 °C). About 95% of the time, the low temperature has been between 19.5 °F (-6.9 °C) and 52.0 °F (11.1 °C).
Frost
On March 30 in this location expect the temperatures to drop below freezing for a risk of frost about 32.5% 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 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