Mukwonago, WI Weather & Growing Conditions
Tonight
59°F
Light Rain
Rain. Cloudy, with a low around 59. Southeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 59°F | Light Rain | 5 to 10 mph SE | 86% |
| Wednesday | 61°F | Chance Light Rain then Cloudy | 10 to 15 mph S | 28% |
| Wednesday Night | 46°F | Cloudy | 15 mph SW | 13% |
| Thursday | 54°F | Light Rain Likely | 10 to 15 mph W | 61% |
| Thursday Night | 40°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 | 33°F | Mostly Cloudy | 0 to 5 mph N | 3% |
| Saturday | 51°F | Mostly Sunny | 0 to 5 mph W | 1% |
| Saturday Night | 33°F | Partly Cloudy | 0 to 5 mph W | 7% |
| Sunday | 56°F | Slight Chance Light Rain | 5 to 10 mph W | 19% |
| Sunday Night | 35°F | Mostly Clear | 5 mph W | 5% |
| Monday | 59°F | Mostly Sunny | 5 to 15 mph SW | 2% |
| Monday Night | 39°F | Partly Cloudy | 5 to 10 mph W | 2% |
| Tuesday | 59°F | Mostly Sunny | 5 to 10 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mukwonago, WI
Last spring frost
May 1
First fall frost
Oct 13
Growing season
162 days
Hardiness zone
5b
Explore more for Mukwonago, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Waukesha Wwtp, Wi (10.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.