Lake Delton, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake Delton, a village in Sauk County, Wisconsin.
Today
82°F
Partly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 82. Southwest wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Lake Delton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 19% |
| Tonight | 60°F | Chance Showers And Thunderstorms | 0 to 5 mph NW | 72% |
| Wednesday | 78°F | Patchy Fog then Partly Sunny | 0 to 5 mph W | 40% |
| Wednesday Night | 53°F | Partly Cloudy | 0 to 5 mph W | 4% |
| Thursday | 81°F | Sunny | 0 to 5 mph S | 1% |
| Thursday Night | 57°F | Mostly Clear | 0 to 5 mph S | 1% |
| Friday | 83°F | Sunny | 0 to 10 mph SW | 2% |
| Friday Night | 62°F | Mostly Clear | 5 to 10 mph SW | 9% |
| Saturday | 85°F | Mostly Sunny | 5 to 10 mph SW | 12% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 32% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 32% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms | 0 to 10 mph SW | 49% |
| Monday | 83°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 mph S | 47% |
| Monday Night | 64°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 to 5 mph N | 36% |
Forecast source: National Weather Service (api.weather.gov) for Lake Delton (43.592, -89.783). Updated through the day.
Growing snapshot for Lake Delton
Last spring frost
May 8
First fall frost
Oct 3
Growing season
146 days
Hardiness zone
5a
More local growing data for Lake Delton: nearby ZIP 53940 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Baraboo
Bluffview
Ironton
La Valle
Lime Ridge
Loganville
Merrimac
North Freedom
Plain
Prairie du Sac
Reedsburg
Rock Springs
Sauk City
Spring Green
West Baraboo
Climate data from the nearest NOAA station, Wisconsin Dells, Wi (1.8 mi from Lake Delton). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.