Station information
- Integrated Surface Dataset (ISD) station ID: 997338
- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On March 31 in CHICAGO the average high temperature is 50.6 °F (10.3 °C). The lowest recored high temperature was 34.7 °F (1.5 °C) in 2019 and the highest recored high temperature was 71.8 °F (22.1 °C) in 2010. The high temperature is usually* between 43.6 °F (6.4 °C) and 57.6 °F (14.2 °C). About a quarter of the time, the high temperature is less than 43.6 °F (6.4 °C), and another quarter of the time, the high temperature is greater than and 57.6 °F (14.2 °C). About 95% of the time, the high temperature has been between 30.3 °F (-1.0 °C) and 70.9 °F (21.6 °C).
Low Temperatures
On March 31 in CHICAGO the average low temperature is 37.9 °F (3.3 °C). The lowest recored low temperature was 26.6 °F (-3.0 °C) in 2019 and the lowest recored low temperature was 54.3 °F (12.4 °C) in 2006. The low temperature is usually* between 33.7 °F (1.0 °C) and 42.1 °F (5.6 °C). About a quarter of the time, the low temperature is less than 33.7 °F (1.0 °C), and another quarter of the time, the low temperature is greater than and 42.1 °F (5.6 °C). About 95% of the time, the low temperature has been between 25.8 °F (-3.5 °C) and 50.1 °F (10.0 °C).
Frost
On March 31 in CHICAGO expect the temperatures to drop below freezing for a risk of frost about 17.0% 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