Muskego, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Muskego, a city in Waukesha County, Wisconsin.
Overnight
59°F
Light Rain
Rain. Cloudy, with a low around 59. South wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Muskego
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 59°F | Light Rain | 10 mph S | 78% |
| Wednesday | 63°F | Chance Light Rain | 10 to 15 mph S | 38% |
| Wednesday Night | 45°F | Cloudy then Slight Chance Light Rain | 15 mph SW | 16% |
| Thursday | 55°F | 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% |
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.