Birnamwood, WI Weather & Growing Conditions
Overnight
57°F
Rain Showers
Rain showers and areas of fog. Cloudy. Low around 57, with temperatures rising to around 59 overnight. Southeast wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Rain Showers | 9 mph SE | 92% |
| Wednesday | 61°F | Rain Showers Likely | 12 mph S | 73% |
| Wednesday Night | 43°F | Rain Showers | 6 to 10 mph SW | 90% |
| Thursday | 48°F | Rain Showers Likely | 6 to 17 mph NNW | 67% |
| Thursday Night | 31°F | Mostly Cloudy | 9 to 15 mph N | 3% |
| Friday | 44°F | Partly Sunny | 6 to 12 mph N | 0% |
| Friday Night | 24°F | Mostly Clear | 0 to 5 mph N | 0% |
| Saturday | 48°F | Sunny | 1 to 6 mph WNW | 0% |
| Saturday Night | 29°F | Partly Cloudy | 5 to 8 mph W | 6% |
| Sunday | 51°F | Mostly Sunny | 8 to 13 mph WNW | 8% |
| Sunday Night | 30°F | Mostly Clear | 3 to 8 mph W | 0% |
| Monday | 54°F | Mostly Sunny | 3 to 12 mph WSW | 0% |
| Monday Night | 35°F | Partly Cloudy | 9 mph W | 1% |
| Tuesday | 54°F | Mostly Sunny | 6 to 10 mph WNW | 5% |
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 Nov 4, 2026.