Blair, WI Weather & Growing Conditions
This Afternoon
61°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Cloudy, with a high near 61. East wind around 8 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 61°F | Chance Showers And Thunderstorms | 8 mph E | 38% |
| Tonight | 50°F | Chance Rain Showers then Cloudy | 5 to 8 mph NE | 26% |
| Sunday | 68°F | Partly Sunny | 7 to 12 mph NE | 4% |
| Sunday Night | 44°F | Mostly Cloudy | 8 mph NE | 0% |
| Monday | 63°F | Mostly Cloudy | 9 mph E | 5% |
| Monday Night | 42°F | Mostly Cloudy | 3 to 7 mph E | 6% |
| Tuesday | 63°F | Mostly Sunny | 3 to 8 mph E | 4% |
| Tuesday Night | 41°F | Mostly Clear | 1 to 5 mph E | 2% |
| Wednesday | 66°F | Mostly Sunny | 2 to 6 mph E | 1% |
| Wednesday Night | 44°F | Partly Cloudy | 0 to 3 mph E | 1% |
| Thursday | 67°F | Slight Chance Rain Showers | 1 to 5 mph SE | 17% |
| Thursday Night | 48°F | Slight Chance Rain Showers then Mostly Cloudy | 1 mph NE | 17% |
| Friday | 71°F | Partly Sunny | 0 to 3 mph E | 3% |
| Friday Night | 50°F | Partly Cloudy | 1 mph E | 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 Sep 19, 2026.