- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On April 27 in CHICAGO the average high temperature is 56.5 °F (13.6 °C). The lowest recored high temperature was 39.6 °F (4.2 °C) in 2022 and the highest recored high temperature was 84.2 °F (29.0 °C) in 2021. The high temperature is usually* between 48.3 °F (9.1 °C) and 64.6 °F (18.1 °C). About a quarter of the time, the high temperature is less than 48.3 °F (9.1 °C), and another quarter of the time, the high temperature is greater than and 64.6 °F (18.1 °C). About 95% of the time, the high temperature has been between 32.8 °F (0.5 °C) and 80.1 °F (26.7 °C).
Low Temperatures
On April 27 in CHICAGO the average low temperature is 43.8 °F (6.5 °C). The lowest recored low temperature was 32.9 °F (0.5 °C) in 2022 and the lowest recored low temperature was 64.6 °F (18.1 °C) in 2009. The low temperature is usually* between 39.3 °F (4.1 °C) and 48.2 °F (9.0 °C). About a quarter of the time, the low temperature is less than 39.3 °F (4.1 °C), and another quarter of the time, the low temperature is greater than and 48.2 °F (9.0 °C). About 95% of the time, the low temperature has been between 30.8 °F (-0.6 °C) and 56.7 °F (13.7 °C).
Frost
On April 27 in CHICAGO expect the temperatures to drop below freezing for a risk of frost about 3.7% 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