Sauk City, WI Weather & Growing Conditions
This Afternoon
67°F
Scattered Showers And Thunderstorms
Scattered showers and thunderstorms before 5pm, then a chance of showers and thunderstorms. Cloudy, with a high near 67. East wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Scattered Showers And Thunderstorms | 5 mph E | 31% |
| Tonight | 58°F | Chance Showers And Thunderstorms | 5 to 10 mph NE | 63% |
| Sunday | 66°F | Isolated Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 24% |
| Sunday Night | 50°F | Mostly Cloudy | 10 mph NE | 3% |
| Monday | 64°F | Mostly Cloudy then Chance Rain Showers | 10 mph NE | 27% |
| Monday Night | 45°F | Chance Rain Showers | 5 to 10 mph NE | 29% |
| Tuesday | 63°F | Chance Rain Showers then Partly Sunny | 5 to 10 mph NE | 29% |
| Tuesday Night | 44°F | Partly Cloudy | 5 to 10 mph NE | 4% |
| Wednesday | 66°F | Mostly Sunny | 5 to 10 mph NE | 3% |
| Wednesday Night | 46°F | Partly Cloudy | 0 to 5 mph NE | 2% |
| Thursday | 69°F | Partly Sunny then Slight Chance Rain Showers | 0 to 5 mph NE | 15% |
| Thursday Night | 49°F | Slight Chance Rain Showers then Mostly Cloudy | 0 mph | 15% |
| Friday | 73°F | Partly Sunny | 0 to 5 mph NE | 5% |
| Friday Night | 49°F | Partly Cloudy | 0 mph | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sauk City, WI
Last spring frost
May 4
First fall frost
Oct 6
Growing season
155 days
Hardiness zone
5a
Explore more for Sauk City, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Sauk City Wwtp, Wi (4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.