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Birnamwood, WI Weather & Growing Conditions

This Afternoon
60°F
Rain Showers Likely
Rain showers likely. Cloudy, with a high near 60. East wind around 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 60°F Rain Showers Likely 13 mph E 63%
Tonight 50°F Chance Rain Showers then Mostly Cloudy 6 to 10 mph NE 44%
Sunday 65°F Mostly Sunny 8 to 14 mph NE 0%
Sunday Night 43°F Mostly Cloudy 12 mph NE 0%
Monday 61°F Mostly Cloudy 12 mph ENE 1%
Monday Night 39°F Partly Cloudy 8 mph ENE 1%
Tuesday 63°F Mostly Sunny 6 to 10 mph ENE 0%
Tuesday Night 40°F Mostly Clear 5 to 8 mph ENE 1%
Wednesday 66°F Sunny 5 to 9 mph ENE 1%
Wednesday Night 43°F Mostly Clear 2 to 6 mph ENE 1%
Thursday 68°F Mostly Sunny 2 to 6 mph ENE 4%
Thursday Night 44°F Partly Cloudy 3 mph ENE 3%
Friday 71°F Mostly Sunny 5 mph E 3%
Friday Night 45°F Partly Cloudy 3 mph ESE 3%

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 19, 2026.