Birchwood, WI Weather & Growing Conditions
Tonight
51°F
Rain Showers
Rain showers and patchy fog. Cloudy, with a low around 51. East southeast wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Rain Showers | 10 mph ESE | 76% |
| Saturday | 63°F | Chance Rain Showers then Chance Drizzle | 5 to 10 mph ENE | 31% |
| Saturday Night | 50°F | Mostly Cloudy | 0 to 5 mph NE | 10% |
| Sunday | 70°F | Partly Sunny | 5 to 10 mph NE | 0% |
| Sunday Night | 42°F | Mostly Cloudy | 5 to 10 mph NE | 0% |
| Monday | 66°F | Mostly Cloudy | 5 mph ENE | 1% |
| Monday Night | 39°F | Partly Cloudy | 0 to 5 mph ENE | 1% |
| Tuesday | 66°F | Mostly Sunny | 0 to 5 mph E | 1% |
| Tuesday Night | 40°F | Mostly Clear | 0 mph | 0% |
| Wednesday | 68°F | Sunny | 0 to 5 mph SE | 0% |
| Wednesday Night | 45°F | Partly Cloudy | 0 mph | 4% |
| Thursday | 70°F | Mostly Sunny | 0 to 5 mph S | 10% |
| Thursday Night | 47°F | Partly Cloudy | 0 mph | 9% |
| Friday | 73°F | Mostly Sunny | 0 to 5 mph S | 4% |
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 Sep 19, 2026.