Altoona, WI Weather & Growing Conditions
Today
79°F
Partly Sunny then Patchy Smoke
Patchy smoke after 3pm. Partly sunny, with a high near 79. Northwest wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Partly Sunny then Patchy Smoke | 5 to 10 mph NW | 8% |
| Tonight | 56°F | Patchy Smoke then Mostly Cloudy | 0 to 5 mph W | 10% |
| Wednesday | 80°F | Sunny | 0 to 5 mph NNW | 1% |
| Wednesday Night | 56°F | Mostly Clear | 0 to 5 mph WSW | 1% |
| Thursday | 85°F | Sunny | 0 to 10 mph SSW | 1% |
| Thursday Night | 62°F | Mostly Clear | 5 to 10 mph SSW | 2% |
| Friday | 88°F | Sunny | 5 to 10 mph SSW | 7% |
| Friday Night | 64°F | Chance Rain Showers | 5 to 10 mph SSW | 34% |
| Saturday | 87°F | Slight Chance Rain Showers | 5 to 10 mph SSW | 18% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 45% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 5 to 10 mph WSW | 38% |
| Sunday Night | 63°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph NNE | 23% |
| Monday | 84°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 26% |
| Monday Night | 63°F | Chance Showers And Thunderstorms | 5 mph NNE | 26% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Altoona, WI
Last spring frost
Apr 24
First fall frost
Oct 14
Growing season
170 days
Hardiness zone
4b
Explore more for Altoona, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Eau Claire 3Sw, Wi (4.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.