Beach Hazards Statement
* WHAT...Life threatening waves to 4 feet and dangerous
currents are expected.
* WHERE...Milwaukee and Racine Counties.
* WHEN...From 6 AM CDT Wednesday through Wednesday morning.
* IMPACTS...Dangerous swimming conditions are expected due to
high waves and onshore winds.
Small Craft Advisory
* WHAT...Waves to 4 feet.
* WHERE...Nearshore Waters from Port Washington to Winthrop
Harbor IL.
* WHEN...From 6 AM to noon CDT Wednesday.
* IMPACTS...Conditions will be hazardous to small craft.
Milwaukee weather tomorrow (Thursday, September 17)
Tomorrow in Milwaukee looks
overcast, with a high of 75°
and an overnight low of 63°.
There is a 66% chance of rain - plan accordingly.
Winds top out near 6 mph,
and the UV index reaches 3 (moderate).
Milwaukee runs one of the wider annual swings in our dataset: 27°C separates the average July from the average January. Afternoons reach 80°F (26°C) at the peak of summer and 30°F (-1°C) at the depth of winter, with 120 days of measurable precipitation through the year.
Milwaukee weather: quick facts
Hottest month: July - highs near 80°F (26°C)
Coldest month: January - highs near 30°F (-1°C)
Decade extremes (2015-2024): 100°F (38°C) high · -24°F (-31°C) low
Wettest month: June (11 rainy days) · Sunniest: July (12.4 h sun/day)
Climate type:humid continental
Annual swing: 27°C between the average warmest and coolest month · day to night: 8°C
Snow: about 19 days a year
Months with freezing average lows: 4
Average humidity: 72%
Temperatures through the year
July is the warm end of the year, averaging 80°F (26°C) by day and 65°F (18°C) overnight. January bottoms out at 30°F (-1°C) in daylight, 18°F (-8°C) after dark. Snow falls on roughly 19 days a year, mostly November through April.
Rain, sun and snow
Four of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is June through September. Between the average July and the average January lie 27°C, a wider spread than 90% of the 3496 cities in our dataset. Sunshine averages 8.6 hours a day over the year, peaking in July at 12.4 hours. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 100°F (38°C) and the lowest daily minimum -24°F (-31°C).
Season by season
Spring (March through May)
Spring in Milwaukee is chilly, with daytime highs averaging 53°F (11°C) and nights around 38°F (3°C); rain falls on around 36 of the 90 days, plus about 5 snowy days.
Summer (June through August)
Summer settles into easy warmth here - highs near 77°F (25°C), nights near 62°F (17°C), and rain falls on around 31 of the 90 days. Daylight is generous - around 11.8 hours of sun a day.
Fall (September through November)
Fall in Milwaukee is mild, with daytime highs averaging 60°F (16°C) and nights around 47°F (8°C); expect showers on roughly 29 days across the season.
Winter (December through February)
Winter in Milwaukee is frigid, with daytime highs averaging 34°F (1°C) and nights around 20°F (-6°C); expect showers on roughly 24 days across the season, plus about 12 snowy days. Wind sharpens cold like this considerably; pair the forecast winds with the wind speed converter to judge exposed conditions.
Average temperatures in Milwaukee by month
Monthly averages for Milwaukee based on 2015–2024 weather data.
Its 49°F (9°C) annual average is cooler than 93% of the 3496 cities in our dataset, which are all measured on the same 2015-2024 basis.
What is the best time to visit Milwaukee?
The best time to visit Milwaukee is generally May to October, when these are the warmest and brightest weeks of the year. Daytime temperatures in that window sit near 71°F (22°C), with rain on about 11 days a month. For the same question asked the other way round, see where else is warm in May.
Which month is wettest in Milwaukee?
June, at 4.4 inches (112 mm) over about 11 days. February is the driest month, at 1.9 inches (47 mm).
When is Milwaukee at its hottest?
July, averaging 80°F (26°C) by day and 65°F (18°C) overnight. The hottest single day in our 2015-2024 record for this location reached 100°F (38°C).
When is Milwaukee at its coldest?
January, with highs of 30°F (-1°C) and lows near 18°F (-8°C). The coldest day in the 2015-2024 record fell to -24°F (-31°C).
What is the average temperature in Milwaukee?
49°F (9°C) across all twelve months - about 56°F (13°C) by day and 42°F (6°C) after dark.
Does it snow in Milwaukee?
Yes - about 19 days a year carry measurable snowfall, concentrated November through April.
How many rainy days does Milwaukee get in a year?
About 120 days bring measurable precipitation, totalling 38.1 inches (968 mm). That works out at roughly 8.1 mm on an average wet day.