Birnamwood, WI Weather & Growing Conditions
This Afternoon
61°F
Rain Showers Likely
Rain showers likely. Cloudy, with a high near 61. East wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 61°F | Rain Showers Likely | 8 mph E | 55% |
| Tonight | 50°F | Chance Rain Showers then Mostly Cloudy | 8 mph NE | 52% |
| Sunday | 65°F | Partly Sunny | 8 to 14 mph NE | 0% |
| Sunday Night | 43°F | Mostly Cloudy | 12 mph NE | 0% |
| Monday | 60°F | Mostly Cloudy | 12 mph ENE | 1% |
| Monday Night | 37°F | Mostly Cloudy | 8 mph ENE | 1% |
| Tuesday | 62°F | Mostly Sunny | 7 to 12 mph ENE | 3% |
| Tuesday Night | 42°F | Mostly Clear | 5 to 9 mph ENE | 2% |
| Wednesday | 65°F | Mostly Sunny | 3 to 10 mph ENE | 2% |
| Wednesday Night | 45°F | Partly Cloudy | 2 to 7 mph ENE | 1% |
| Thursday | 67°F | Mostly Sunny | 2 to 6 mph E | 9% |
| Thursday Night | 47°F | Mostly Cloudy | 0 to 3 mph ENE | 9% |
| Friday | 71°F | Partly Sunny | 3 mph ENE | 5% |
| Friday Night | 48°F | Partly Cloudy | 0 to 3 mph ENE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Birnamwood, WI
Last spring frost
May 14
First fall frost
Sep 30
Growing season
139 days
Hardiness zone
4b
Explore more for Birnamwood, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Antigo, Wi (14.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.