May 18 - MILWAUKEE - Weather History and Averages

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

High Temperatures

On May 18 in MILWAUKEE the average high temperature is 61.4 °F (16.3 °C). The lowest recored high temperature was 47.5 °F (8.6 °C) in 2020 and the highest recored high temperature was 77.7 °F (25.4 °C) in 2017. The high temperature is usually^* between 55.1 °F (12.8 °C) and 67.8 °F (19.9 °C). About a quarter of the time, the high temperature is less than 55.1 °F (12.8 °C), and another quarter of the time, the high temperature is greater than and 67.8 °F (19.9 °C). About 95% of the time, the high temperature has been between 43.0 °F (6.1 °C) and 79.8 °F (26.6 °C).

Low Temperatures

On May 18 in MILWAUKEE the average low temperature is 47.8 °F (8.8 °C). The lowest recored low temperature was 41.2 °F (5.1 °C) in 2019 and the lowest recored low temperature was 54.5 °F (12.5 °C) in 2015. The low temperature is usually^* between 44.5 °F (6.9 °C) and 51.2 °F (10.7 °C). About a quarter of the time, the low temperature is less than 44.5 °F (6.9 °C), and another quarter of the time, the low temperature is greater than and 51.2 °F (10.7 °C). About 95% of the time, the low temperature has been between 38.0 °F (3.3 °C) and 57.7 °F (14.3 °C).

Frost

On May 18 in MILWAUKEE expect the temperatures to drop below freezing for a risk of frost about 0.1% 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:

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

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