April 18 - MILWAUKEE - Weather History and Averages

Station: MILWAUKEE (2006 to 2025)
Country: US
State: WI
Latitude: 43.05
Longitude: -87.88

High Temperatures

On April 18 in MILWAUKEE the average high temperature is 51.6 °F (10.9 °C). The lowest recored high temperature was 36.5 °F (2.5 °C) in 2018 and the highest recored high temperature was 71.1 °F (21.7 °C) in 2025. The high temperature is usually^* between 45.3 °F (7.4 °C) and 58.0 °F (14.4 °C). About a quarter of the time, the high temperature is less than 45.3 °F (7.4 °C), and another quarter of the time, the high temperature is greater than and 58.0 °F (14.4 °C). About 95% of the time, the high temperature has been between 33.2 °F (0.6 °C) and 70.1 °F (21.2 °C).

Low Temperatures

On April 18 in MILWAUKEE the average low temperature is 38.7 °F (3.7 °C). The lowest recored low temperature was 32.0 °F (0.0 °C) in 2018 and the lowest recored low temperature was 47.1 °F (8.4 °C) in 2024. The low temperature is usually^* between 35.8 °F (2.1 °C) and 41.7 °F (5.4 °C). About a quarter of the time, the low temperature is less than 35.8 °F (2.1 °C), and another quarter of the time, the low temperature is greater than and 41.7 °F (5.4 °C). About 95% of the time, the low temperature has been between 30.2 °F (-1.0 °C) and 47.3 °F (8.5 °C).

Frost

On April 18 in MILWAUKEE expect the temperatures to drop below freezing for a risk of frost about 6.2% 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:

MILWAUKEE — Integrated Surface Dataset (ISD) station ID: 997342 — from year 2006 to 2025

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