Prairie du Sac, WI Weather & Growing Conditions
This Afternoon
69°F
Light Rain Likely
Rain likely. Cloudy, with a high near 69. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Light Rain Likely | 15 mph S | 68% |
| Tonight | 54°F | Light Rain | 10 to 15 mph S | 93% |
| Wednesday | 59°F | Light Rain | 10 to 15 mph SW | 80% |
| Wednesday Night | 45°F | Light Rain Likely | 10 mph SW | 74% |
| Thursday | 53°F | Light Rain | 5 to 10 mph W | 81% |
| Thursday Night | 38°F | Slight Chance Light Rain then Mostly Cloudy | 5 to 10 mph N | 23% |
| Friday | 49°F | Slight Chance Light Rain then Partly Sunny | 5 to 10 mph N | 15% |
| Friday Night | 30°F | Partly Cloudy | 0 mph | 1% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph W | 1% |
| Saturday Night | 33°F | Partly Cloudy | 0 to 5 mph W | 7% |
| Sunday | 58°F | Slight Chance Light Rain | 5 to 10 mph W | 17% |
| Sunday Night | 34°F | Mostly Clear | 0 to 5 mph W | 4% |
| Monday | 60°F | Sunny | 0 to 10 mph SW | 1% |
| Monday Night | 38°F | Mostly Clear | 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Prairie du Sac, WI
Last spring frost
May 4
First fall frost
Oct 6
Growing season
155 days
Hardiness zone
5a
Explore more for Prairie du Sac, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Sauk City Wwtp, Wi (3.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.