Butternut, WI Weather & Growing Conditions
Tonight
55°F
Light Rain Likely
Rain likely. Cloudy, with a low around 55. East wind 0 to 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Light Rain Likely | 0 to 5 mph E | 71% |
| Wednesday | 60°F | Rain | 5 mph S | 76% |
| Wednesday Night | 39°F | Light Rain | 0 to 10 mph NW | 76% |
| Thursday | 45°F | Light Rain | 10 to 15 mph N | 93% |
| Thursday Night | 28°F | Slight Chance Rain And Snow then Cloudy | 5 to 10 mph NE | 21% |
| Friday | 42°F | Partly Sunny | 0 to 5 mph NE | 5% |
| Friday Night | 23°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 47°F | Mostly Sunny | 0 to 5 mph SW | 2% |
| Saturday Night | 29°F | Partly Cloudy | 0 to 5 mph W | 14% |
| Sunday | 51°F | Mostly Sunny then Slight Chance Light Rain | 5 mph W | 17% |
| Sunday Night | 30°F | Partly Cloudy | 0 to 5 mph SW | 9% |
| Monday | 53°F | Partly Sunny | 5 to 10 mph SW | 3% |
| Monday Night | 33°F | Partly Cloudy | 5 mph W | 2% |
| Tuesday | 50°F | Mostly Sunny | 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Butternut, WI
Last spring frost
May 22
First fall frost
Sep 24
Growing season
126 days
Hardiness zone
4a
Explore more for Butternut, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Butternut 3Sw, Wi (4.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.