Blair, WI Weather & Growing Conditions
Today
59°F
Chance Rain Showers then Mostly Cloudy
A chance of rain showers before noon. Mostly cloudy. High near 59, with temperatures falling to around 53 in the afternoon. South wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 59°F | Chance Rain Showers then Mostly Cloudy | 9 to 13 mph S | 45% |
| Tonight | 44°F | Rain Showers Likely | 5 to 10 mph SW | 70% |
| Thursday | 51°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph N | 44% |
| Thursday Night | 32°F | Mostly Cloudy | 5 to 12 mph N | 2% |
| Friday | 47°F | Mostly Sunny | 2 to 7 mph N | 0% |
| Friday Night | 25°F | Mostly Clear | 1 mph N | 0% |
| Saturday | 50°F | Sunny | 0 to 5 mph W | 0% |
| Saturday Night | 31°F | Partly Cloudy | 2 mph W | 4% |
| Sunday | 55°F | Sunny | 2 to 9 mph W | 5% |
| Sunday Night | 32°F | Mostly Clear | 2 mph SW | 0% |
| Monday | 61°F | Mostly Sunny | 2 to 9 mph SW | 1% |
| Monday Night | 36°F | Partly Cloudy | 5 mph W | 1% |
| Tuesday | 57°F | Sunny | 2 to 6 mph NW | 1% |
| Tuesday Night | 35°F | Partly Cloudy | 1 mph NW | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Blair, WI
Last spring frost
May 9
First fall frost
Oct 1
Growing season
143 days
Hardiness zone
4b
Explore more for Blair, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Blair, Wi (1.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.