Muskego, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Muskego, a city in Waukesha County, Wisconsin.
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. Southwest wind 0 to 10 mph.
7-day forecast for Muskego
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 0 to 10 mph SW | 4% |
| Tonight | 66°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 84% |
| Wednesday | 75°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph W | 80% |
| Wednesday Night | 61°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 51% |
| Thursday | 77°F | Chance Rain Showers then Mostly Sunny | 0 to 5 mph NE | 28% |
| Thursday Night | 58°F | Partly Cloudy | 0 to 5 mph S | 13% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph SW | 2% |
| Friday Night | 62°F | Mostly Clear | 0 to 5 mph S | 6% |
| Saturday | 83°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 15% |
| Saturday Night | 67°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 28% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 28% |
| Sunday Night | 66°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph SW | 50% |
| Monday | 82°F | Chance Rain Showers | 5 to 10 mph S | 46% |
| Monday Night | 65°F | Chance Showers And Thunderstorms | 5 mph W | 46% |
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 Aug 4, 2026.