September 28 - CHICAGO - Weather History and Averages

Station: CHICAGO (2005 to 2025)
Country: US
State: IL
Latitude: 42.0
Longitude: -87.5

High Temperatures

On September 28 in CHICAGO the average high temperature is 68.1 °F (20.0 °C). The lowest recored high temperature was 55.8 °F (13.2 °C) in 2022 and the highest recored high temperature was 79.9 °F (26.6 °C) in 2013. The high temperature is usually^* between 63.7 °F (17.6 °C) and 72.5 °F (22.5 °C). About a quarter of the time, the high temperature is less than 63.7 °F (17.6 °C), and another quarter of the time, the high temperature is greater than and 72.5 °F (22.5 °C). About 95% of the time, the high temperature has been between 55.3 °F (12.9 °C) and 80.9 °F (27.2 °C).

Low Temperatures

On September 28 in CHICAGO the average low temperature is 59.3 °F (15.2 °C). The lowest recored low temperature was 51.1 °F (10.6 °C) in 2022 and the lowest recored low temperature was 67.6 °F (19.8 °C) in 2024. The low temperature is usually^* between 55.6 °F (13.1 °C) and 63.0 °F (17.2 °C). About a quarter of the time, the low temperature is less than 55.6 °F (13.1 °C), and another quarter of the time, the low temperature is greater than and 63.0 °F (17.2 °C). About 95% of the time, the low temperature has been between 48.5 °F (9.2 °C) and 70.1 °F (21.2 °C).

Frost

On September 28 in CHICAGO expect the temperatures to drop below freezing for a risk of frost about 0.0% of the time.

^{Usually* in this context means around 50% of the
time, assuming a normal distribution of values.}

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 2024

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