Mukwonago, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mukwonago, a village in Waukesha County, Wisconsin.
This Afternoon
70°F
Light Rain Likely
Rain before 3pm, then rain likely and a slight chance of thunderstorms. Cloudy, with a high near 70. South wind around 15 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Mukwonago
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Light Rain Likely | 15 mph S | 95% |
| Tonight | 57°F | Light Rain | 10 to 15 mph S | 88% |
| Wednesday | 63°F | Light Rain Likely | 10 to 15 mph S | 74% |
| Wednesday Night | 46°F | Chance Light Rain | 10 to 15 mph SW | 36% |
| Thursday | 55°F | Light Rain Likely | 5 to 10 mph W | 64% |
| Thursday Night | 39°F | Light Rain Likely | 5 to 10 mph NW | 56% |
| Friday | 49°F | Slight Chance Light Rain | 10 to 15 mph N | 22% |
| Friday Night | 32°F | Mostly Cloudy | 0 to 5 mph N | 4% |
| Saturday | 51°F | Mostly Sunny | 0 to 5 mph W | 1% |
| Saturday Night | 32°F | Partly Cloudy | 0 to 5 mph W | 7% |
| Sunday | 56°F | Slight Chance Light Rain | 5 to 10 mph W | 19% |
| Sunday Night | 34°F | Mostly Clear | 5 mph W | 5% |
| Monday | 59°F | Mostly Sunny | 5 to 15 mph SW | 2% |
| Monday Night | 38°F | Partly Cloudy | 5 to 10 mph W | 2% |
Forecast source: National Weather Service (api.weather.gov) for Mukwonago (42.853, -88.321). Updated through the day.
Growing snapshot for Mukwonago
Last spring frost
May 1
First fall frost
Oct 13
Growing season
162 days
Hardiness zone
5b
More local growing data for Mukwonago: nearby ZIP 53149 weather · frost dates · planting calendar · Wisconsin frost dates
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Climate data from the nearest NOAA station, Waukesha Wwtp, Wi (10.2 mi from Mukwonago). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.