- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On April 30 in CHICAGO the average high temperature is 58.6 °F (14.8 °C). The lowest recored high temperature was 44.4 °F (6.9 °C) in 2015 and the highest recored high temperature was 80.1 °F (26.7 °C) in 2007. The high temperature is usually* between 50.6 °F (10.3 °C) and 66.6 °F (19.2 °C). About a quarter of the time, the high temperature is less than 50.6 °F (10.3 °C), and another quarter of the time, the high temperature is greater than and 66.6 °F (19.2 °C). About 95% of the time, the high temperature has been between 35.4 °F (1.9 °C) and 81.9 °F (27.7 °C).
Low Temperatures
On April 30 in CHICAGO the average low temperature is 46.3 °F (7.9 °C). The lowest recored low temperature was 38.3 °F (3.5 °C) in 2019 and the lowest recored low temperature was 61.9 °F (16.6 °C) in 2010. The low temperature is usually* between 41.7 °F (5.4 °C) and 50.9 °F (10.5 °C). About a quarter of the time, the low temperature is less than 41.7 °F (5.4 °C), and another quarter of the time, the low temperature is greater than and 50.9 °F (10.5 °C). About 95% of the time, the low temperature has been between 32.9 °F (0.5 °C) and 59.6 °F (15.3 °C).
Frost
On April 30 in CHICAGO expect the temperatures to drop below freezing for a risk of frost about 1.8% 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