August 7 - WAUKEGAN HARBOR - Weather History and Averages

Station: WAUKEGAN HARBOR (2006 to 2025)
Country: US
State: IL
Latitude: 42.35
Longitude: -87.82

High Temperatures

On August 7 in WAUKEGAN HARBOR the average high temperature is 78.5 °F (25.8 °C). The lowest recored high temperature was 70.3 °F (21.3 °C) in 2017 and the highest recored high temperature was 91.2 °F (32.9 °C) in 2012. The high temperature is usually^* between 74.5 °F (23.6 °C) and 82.4 °F (28.0 °C). About a quarter of the time, the high temperature is less than 74.5 °F (23.6 °C), and another quarter of the time, the high temperature is greater than and 82.4 °F (28.0 °C). About 95% of the time, the high temperature has been between 67.1 °F (19.5 °C) and 89.8 °F (32.1 °C).

Low Temperatures

On August 7 in WAUKEGAN HARBOR the average low temperature is 67.3 °F (19.6 °C). The lowest recored low temperature was 63.0 °F (17.2 °C) in 2009 and the lowest recored low temperature was 73.6 °F (23.1 °C) in 2025. The low temperature is usually^* between 64.8 °F (18.2 °C) and 69.9 °F (21.0 °C). About a quarter of the time, the low temperature is less than 64.8 °F (18.2 °C), and another quarter of the time, the low temperature is greater than and 69.9 °F (21.0 °C). About 95% of the time, the low temperature has been between 60.0 °F (15.6 °C) and 74.7 °F (23.7 °C).

Frost

On August 7 in WAUKEGAN HARBOR 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:

WAUKEGAN HARBOR — Integrated Surface Dataset (ISD) station ID: 997735 — from year 2007 to 2025

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