Station information
- Integrated Surface Dataset (ISD) station ID: 997338
- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On April 15 in CHICAGO the average high temperature is 54.7 °F (12.6 °C). The lowest recored high temperature was 31.8 °F (-0.1 °C) in 2014 and the highest recored high temperature was 79.3 °F (26.3 °C) in 2010. The high temperature is usually* between 45.8 °F (7.7 °C) and 63.6 °F (17.6 °C). About a quarter of the time, the high temperature is less than 45.8 °F (7.7 °C), and another quarter of the time, the high temperature is greater than and 63.6 °F (17.6 °C). About 95% of the time, the high temperature has been between 28.8 °F (-1.8 °C) and 80.6 °F (27.0 °C).
Low Temperatures
On April 15 in CHICAGO the average low temperature is 41.9 °F (5.5 °C). The lowest recored low temperature was 27.0 °F (-2.8 °C) in 2014 and the lowest recored low temperature was 59.5 °F (15.3 °C) in 2010. The low temperature is usually* between 36.4 °F (2.5 °C) and 47.4 °F (8.6 °C). About a quarter of the time, the low temperature is less than 36.4 °F (2.5 °C), and another quarter of the time, the low temperature is greater than and 47.4 °F (8.6 °C). About 95% of the time, the low temperature has been between 26.0 °F (-3.4 °C) and 57.9 °F (14.4 °C).
Frost
On April 15 in CHICAGO expect the temperatures to drop below freezing for a risk of frost about 11.1% 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