Harman US

Sylvan Lake, MI Weather & Growing Conditions

Tonight
55°F
Mostly Cloudy then Chance Light Rain
A chance of rain after midnight. Mostly cloudy, with a low around 55. East northeast wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Tonight 55°F Mostly Cloudy then Chance Light Rain 7 mph ENE 33%
Saturday 66°F Rain Showers 5 to 9 mph ESE 83%
Saturday Night 56°F Showers And Thunderstorms 5 to 8 mph E 78%
Sunday 66°F Chance Rain Showers 7 to 12 mph NNE 52%
Sunday Night 52°F Chance Rain Showers then Mostly Cloudy 12 mph NE 42%
Monday 63°F Mostly Cloudy 13 mph NE 11%
Monday Night 49°F Mostly Cloudy 13 mph NE 10%
Tuesday 62°F Mostly Cloudy then Slight Chance Rain Showers 14 mph NE 15%
Tuesday Night 51°F Chance Rain Showers 14 mph NE 46%
Wednesday 61°F Chance Rain Showers 13 mph ENE 49%
Wednesday Night 52°F Chance Rain Showers 7 to 10 mph NE 49%
Thursday 64°F Partly Sunny 9 mph NE 13%
Thursday Night 52°F Mostly Cloudy 5 to 8 mph NNE 13%
Friday 68°F Mostly Sunny 6 to 9 mph NNE 8%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Sylvan Lake, MI

Last spring frost
Apr 26
First fall frost
Oct 22
Growing season
177 days
Hardiness zone
6a

Explore more for Sylvan Lake, MI: full frost dates · planting calendar · Michigan frost dates

Climate data from the nearest NOAA station, Pontiac Wwtp, Mi (4.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.