Summit Lake, WI Weather & Growing Conditions
Today
76°F
Chance Rain Showers
A chance of rain showers between 9am and 1pm, then a chance of showers and thunderstorms between 1pm and 2pm, then a slight chance of showers and thunderstorms between 2pm and 4pm. Mostly cloudy, with a high near 76. Heat index values as high as 76. West southwest wind 6 to 12 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Chance Rain Showers | 6 to 12 mph WSW | 32% |
| Tonight | 54°F | Mostly Cloudy | 1 to 6 mph NW | 13% |
| Wednesday | 75°F | Mostly Sunny | 1 to 5 mph NNW | 1% |
| Wednesday Night | 51°F | Mostly Clear then Patchy Fog | 0 to 3 mph SE | 2% |
| Thursday | 80°F | Sunny | 0 to 7 mph SW | 0% |
| Thursday Night | 57°F | Mostly Clear | 6 mph SW | 0% |
| Friday | 83°F | Sunny | 3 to 10 mph SW | 7% |
| Friday Night | 60°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 31% |
| Saturday | 82°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 8 mph WSW | 22% |
| Saturday Night | 61°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 1 to 8 mph WSW | 46% |
| Sunday | 81°F | Chance Showers And Thunderstorms | 2 to 8 mph W | 44% |
| Sunday Night | 57°F | Chance Showers And Thunderstorms | 1 to 7 mph NNW | 31% |
| Monday | 79°F | Chance Showers And Thunderstorms | 2 to 6 mph W | 30% |
| Monday Night | 57°F | Chance Showers And Thunderstorms | 2 to 6 mph N | 30% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Summit Lake, WI
Last spring frost
May 14
First fall frost
Sep 30
Growing season
139 days
Hardiness zone
4b
Explore more for Summit Lake, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Antigo, Wi (9.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.