April 1 - 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 April 1 in WAUKEGAN HARBOR the average high temperature is 47.4 °F (8.5 °C). The lowest recored high temperature was 37.2 °F (2.9 °C) in 2025 and the highest recored high temperature was 69.4 °F (20.8 °C) in 2010. The high temperature is usually^* between 41.0 °F (5.0 °C) and 53.7 °F (12.1 °C). About a quarter of the time, the high temperature is less than 41.0 °F (5.0 °C), and another quarter of the time, the high temperature is greater than and 53.7 °F (12.1 °C). About 95% of the time, the high temperature has been between 28.9 °F (-1.7 °C) and 65.8 °F (18.8 °C).

Low Temperatures

On April 1 in WAUKEGAN HARBOR the average low temperature is 35.6 °F (2.0 °C). The lowest recored low temperature was 22.8 °F (-5.1 °C) in 2018 and the lowest recored low temperature was 48.9 °F (9.4 °C) in 2010. The low temperature is usually^* between 31.0 °F (-0.6 °C) and 40.2 °F (4.6 °C). About a quarter of the time, the low temperature is less than 31.0 °F (-0.6 °C), and another quarter of the time, the low temperature is greater than and 40.2 °F (4.6 °C). About 95% of the time, the low temperature has been between 22.1 °F (-5.5 °C) and 49.0 °F (9.5 °C).

Frost

On April 1 in WAUKEGAN HARBOR expect the temperatures to drop below freezing for a risk of frost about 30.1% 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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