Spring Green, WI Weather & Growing Conditions
Tonight
59°F
Showers And Thunderstorms
A chance of showers and thunderstorms before 10pm, then a chance of showers and thunderstorms between 10pm and 11pm, then showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a low around 59. East wind 10 to 15 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 59°F | Showers And Thunderstorms | 10 to 15 mph E | 95% |
| Saturday | 73°F | Showers And Thunderstorms | 5 to 10 mph E | 80% |
| Saturday Night | 56°F | Showers And Thunderstorms | 10 mph NE | 79% |
| Sunday | 68°F | Chance Rain Showers | 10 to 15 mph NE | 32% |
| Sunday Night | 50°F | Mostly Cloudy | 10 mph NE | 12% |
| Monday | 64°F | Chance Rain Showers | 10 to 15 mph NE | 34% |
| Monday Night | 46°F | Chance Rain Showers | 5 to 10 mph NE | 34% |
| Tuesday | 63°F | Chance Rain Showers then Partly Sunny | 5 to 10 mph NE | 32% |
| Tuesday Night | 44°F | Partly Cloudy | 0 to 5 mph NE | 6% |
| Wednesday | 67°F | Mostly Sunny | 0 to 5 mph NE | 4% |
| Wednesday Night | 47°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Thursday | 70°F | Partly Sunny | 0 to 5 mph NE | 6% |
| Thursday Night | 48°F | Partly Cloudy | 0 mph | 7% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Spring Green, WI
Last spring frost
Apr 30
First fall frost
Oct 9
Growing season
161 days
Hardiness zone
5a
Explore more for Spring Green, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Lone Rock Tri Co Ap, Wi (5.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.