Summit Lake, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Summit Lake, a community in Langlade County, Wisconsin.
Today
59°F
Chance Rain Showers
A chance of rain showers. Cloudy, with a high near 59. East wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Summit Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 59°F | Chance Rain Showers | 6 to 9 mph E | 45% |
| Tonight | 48°F | Chance Rain Showers then Mostly Cloudy | 3 to 7 mph NE | 28% |
| Sunday | 63°F | Partly Sunny | 7 to 12 mph NE | 0% |
| Sunday Night | 42°F | Mostly Cloudy | 6 to 9 mph NE | 0% |
| Monday | 60°F | Mostly Cloudy | 5 to 8 mph ENE | 0% |
| Monday Night | 37°F | Partly Cloudy | 5 mph ENE | 0% |
| Tuesday | 62°F | Sunny | 3 to 8 mph ENE | 0% |
| Tuesday Night | 38°F | Mostly Clear | 6 mph E | 1% |
| Wednesday | 66°F | Sunny | 3 to 7 mph E | 1% |
| Wednesday Night | 41°F | Mostly Clear then Patchy Fog | 1 to 5 mph E | 1% |
| Thursday | 67°F | Patchy Fog then Sunny | 3 mph E | 3% |
| Thursday Night | 43°F | Partly Cloudy | 2 mph ENE | 3% |
| Friday | 70°F | Mostly Sunny | 3 mph E | 3% |
| Friday Night | 44°F | Partly Cloudy | 2 mph SE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Summit Lake (45.377, -89.199). Updated through the day.
Growing snapshot for Summit Lake
Last spring frost
Jun 3
First fall frost
Sep 18
Growing season
106 days
Hardiness zone
4b
More local growing data for Summit Lake: nearby ZIP 54485 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, North Pelican, Wi (16.8 mi from Summit Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.