Prairie du Sac, WI Weather & Growing Conditions
Overnight
56°F
Showers And Thunderstorms
Showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy. Low around 56, with temperatures rising to around 61 overnight. East wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Showers And Thunderstorms | 5 to 10 mph E | 100% |
| Saturday | 69°F | Showers And Thunderstorms | 5 to 10 mph SE | 100% |
| Saturday Night | 55°F | Showers And Thunderstorms | 5 to 10 mph NE | 82% |
| Sunday | 66°F | Scattered Rain Showers then Partly Sunny | 10 to 15 mph NE | 27% |
| Sunday Night | 49°F | Mostly Cloudy | 10 to 15 mph NE | 5% |
| Monday | 63°F | Chance Rain Showers | 10 to 15 mph NE | 31% |
| Monday Night | 45°F | Chance Rain Showers | 5 to 10 mph NE | 31% |
| Tuesday | 62°F | Chance Rain Showers then Partly Sunny | 5 to 10 mph NE | 30% |
| Tuesday Night | 44°F | Partly Cloudy | 0 to 10 mph NE | 6% |
| Wednesday | 66°F | Mostly Sunny | 0 to 5 mph NE | 5% |
| Wednesday Night | 46°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Thursday | 69°F | Mostly Sunny | 0 to 5 mph NE | 7% |
| Thursday Night | 48°F | Partly Cloudy | 0 mph | 7% |
| Friday | 70°F | Mostly Sunny | 0 to 5 mph NE | 4% |
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 Sep 19, 2026.