August 21 - CHICAGO / CALUMET COAST GUARD - Weather History and Averages

Station: CHICAGO / CALUMET COAST GUARD (1994 to 1996)
Country: US
Latitude: 41.72
Longitude: -87.53

High Temperatures

On August 21 in CHICAGO / CALUMET COAST GUARD the average high temperature is 78.4 °F (25.8 °C). The lowest recored high temperature was 77.0 °F (25.0 °C) in 1994 and the highest recored high temperature was 79.0 °F (26.1 °C) in 1995. The high temperature is usually^* between 74.0 °F (23.3 °C) and 82.9 °F (28.3 °C). About a quarter of the time, the high temperature is less than 74.0 °F (23.3 °C), and another quarter of the time, the high temperature is greater than and 82.9 °F (28.3 °C). About 95% of the time, the high temperature has been between 65.5 °F (18.6 °C) and 91.4 °F (33.0 °C).

Low Temperatures

On August 21 in CHICAGO / CALUMET COAST GUARD the average low temperature is 66.2 °F (19.0 °C). The lowest recored low temperature was 63.9 °F (17.7 °C) in 1994 and the lowest recored low temperature was 66.9 °F (19.4 °C) in 1995. The low temperature is usually^* between 62.2 °F (16.8 °C) and 70.1 °F (21.2 °C). About a quarter of the time, the low temperature is less than 62.2 °F (16.8 °C), and another quarter of the time, the low temperature is greater than and 70.1 °F (21.2 °C). About 95% of the time, the low temperature has been between 54.6 °F (12.5 °C) and 77.7 °F (25.4 °C).

Frost

On August 21 in CHICAGO / CALUMET COAST GUARD 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 / CALUMET COAST GUARD — Integrated Surface Dataset (ISD) station ID: 725344 — from year 1994 to 1995

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