October 12 - CHICAGO - Weather History and Averages

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

High Temperatures

On October 12 in CHICAGO the average high temperature is 63.5 °F (17.5 °C). The lowest recored high temperature was 44.4 °F (6.9 °C) in 2006 and the highest recored high temperature was 80.4 °F (26.9 °C) in 2024. The high temperature is usually^* between 57.7 °F (14.3 °C) and 69.4 °F (20.8 °C). About a quarter of the time, the high temperature is less than 57.7 °F (14.3 °C), and another quarter of the time, the high temperature is greater than and 69.4 °F (20.8 °C). About 95% of the time, the high temperature has been between 46.5 °F (8.1 °C) and 80.6 °F (27.0 °C).

Low Temperatures

On October 12 in CHICAGO the average low temperature is 53.6 °F (12.0 °C). The lowest recored low temperature was 31.5 °F (-0.3 °C) in 2006 and the lowest recored low temperature was 64.0 °F (17.8 °C) in 2008. The low temperature is usually^* between 47.9 °F (8.8 °C) and 59.4 °F (15.2 °C). About a quarter of the time, the low temperature is less than 47.9 °F (8.8 °C), and another quarter of the time, the low temperature is greater than and 59.4 °F (15.2 °C). About 95% of the time, the low temperature has been between 37.0 °F (2.8 °C) and 70.3 °F (21.3 °C).

Frost

On October 12 in CHICAGO expect the temperatures to drop below freezing for a risk of frost about 0.5% 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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