Birchwood, WI Weather & Growing Conditions
Today
76°F
Mostly Sunny
Mostly sunny, with a high near 76. West northwest wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Mostly Sunny | 5 to 10 mph WNW | 6% |
| Tonight | 52°F | Partly Cloudy | 0 to 5 mph NW | 3% |
| Wednesday | 76°F | Sunny | 0 to 5 mph W | 0% |
| Wednesday Night | 55°F | Mostly Clear | 0 to 5 mph SW | 0% |
| Thursday | 82°F | Sunny | 0 to 10 mph SSW | 2% |
| Thursday Night | 60°F | Mostly Clear | 5 to 10 mph SSW | 5% |
| Friday | 85°F | Sunny | 5 to 10 mph SSW | 14% |
| Friday Night | 61°F | Chance Showers And Thunderstorms | 0 to 10 mph SW | 37% |
| Saturday | 83°F | Mostly Sunny | 0 to 5 mph SW | 14% |
| Saturday Night | 61°F | Chance Showers And Thunderstorms | 0 to 5 mph WNW | 54% |
| Sunday | 81°F | Chance Rain Showers | 0 to 5 mph W | 45% |
| Sunday Night | 60°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 to 5 mph NNE | 23% |
| Monday | 80°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph NNE | 23% |
| Monday Night | 59°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph NNE | 22% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Birchwood, WI
Last spring frost
May 9
First fall frost
Sep 29
Growing season
140 days
Hardiness zone
4a
Explore more for Birchwood, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Weyerhaeuser 1N, Wi (13.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.