Station information
- Integrated Surface Dataset (ISD) station ID: 997338
- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On April 12 in CHICAGO the average high temperature is 55.0 °F (12.8 °C). The lowest recored high temperature was 38.1 °F (3.4 °C) in 2007 and the highest recored high temperature was 80.6 °F (27.0 °C) in 2023. The high temperature is usually* between 47.4 °F (8.5 °C) and 62.6 °F (17.0 °C). About a quarter of the time, the high temperature is less than 47.4 °F (8.5 °C), and another quarter of the time, the high temperature is greater than and 62.6 °F (17.0 °C). About 95% of the time, the high temperature has been between 32.9 °F (0.5 °C) and 77.1 °F (25.0 °C).
Low Temperatures
On April 12 in CHICAGO the average low temperature is 43.3 °F (6.3 °C). The lowest recored low temperature was 34.5 °F (1.4 °C) in 2007 and the lowest recored low temperature was 61.3 °F (16.3 °C) in 2023. The low temperature is usually* between 38.6 °F (3.7 °C) and 48.0 °F (8.9 °C). About a quarter of the time, the low temperature is less than 38.6 °F (3.7 °C), and another quarter of the time, the low temperature is greater than and 48.0 °F (8.9 °C). About 95% of the time, the low temperature has been between 29.7 °F (-1.3 °C) and 57.0 °F (13.9 °C).
Frost
On April 12 in CHICAGO expect the temperatures to drop below freezing for a risk of frost about 5.2% 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