Muskego, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Muskego, a city in Waukesha County, Wisconsin.
Today
64°F
Isolated Rain Showers
Isolated rain showers. Cloudy. High near 64, with temperatures falling to around 54 in the afternoon. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Muskego
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 64°F | Isolated Rain Showers | 15 mph SW | 22% |
| Tonight | 45°F | Cloudy then Slight Chance Rain Showers | 15 mph SW | 16% |
| Thursday | 55°F | Chance Rain Showers then Chance Light Rain | 10 to 15 mph W | 50% |
| Thursday Night | 37°F | Chance Light Rain then Cloudy | 10 mph N | 41% |
| Friday | 48°F | Mostly Cloudy | 10 to 15 mph N | 10% |
| Friday Night | 32°F | Partly Cloudy | 5 to 10 mph N | 1% |
| Saturday | 50°F | Sunny | 5 mph NW | 0% |
| Saturday Night | 33°F | Partly Cloudy | 5 mph W | 1% |
| Sunday | 55°F | Sunny | 5 to 10 mph W | 7% |
| Sunday Night | 34°F | Mostly Clear | 5 to 10 mph W | 1% |
| Monday | 59°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 39°F | Partly Cloudy | 5 to 10 mph W | 1% |
| Tuesday | 60°F | Sunny | 5 to 10 mph NW | 2% |
| Tuesday Night | 38°F | Partly Cloudy | 0 to 5 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Muskego (42.871, -88.134). Updated through the day.
Growing snapshot for Muskego
Last spring frost
May 3
First fall frost
Oct 14
Growing season
162 days
Hardiness zone
5b
More local growing data for Muskego: nearby ZIP 53150 weather · frost dates · planting calendar · Wisconsin frost dates
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Climate data from the nearest NOAA station, Hales Corners/Whitnall Park/Bo, Wi (7 mi from Muskego). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.