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Pentwater, MI Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Pentwater, a village in Oceana County, Michigan.

Today
66°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. High near 66, with temperatures falling to around 64 in the afternoon. East southeast wind around 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

7-day forecast for Pentwater

WhenTempForecastWindPrecip
Today 66°F Showers And Thunderstorms 13 mph ESE 92%
Tonight 53°F Showers And Thunderstorms Likely 6 to 10 mph E 60%
Sunday 70°F Partly Sunny 8 to 14 mph NNE 14%
Sunday Night 49°F Mostly Cloudy 8 to 14 mph NE 0%
Monday 66°F Mostly Cloudy 10 mph ENE 1%
Monday Night 46°F Mostly Cloudy 9 mph ENE 1%
Tuesday 66°F Partly Sunny 10 mph ENE 3%
Tuesday Night 48°F Partly Cloudy 10 mph ENE 7%
Wednesday 65°F Partly Sunny 10 mph ENE 11%
Wednesday Night 50°F Mostly Cloudy 6 to 9 mph ENE 9%
Thursday 67°F Partly Sunny 8 mph NE 2%
Thursday Night 51°F Mostly Cloudy 5 to 8 mph NE 2%
Friday 69°F Mostly Sunny 5 to 8 mph NNE 1%
Friday Night 51°F Partly Cloudy 5 to 8 mph NE 1%

Forecast source: National Weather Service (api.weather.gov) for Pentwater (43.780, -86.430). Updated through the day.

Growing snapshot for Pentwater

Last spring frost
May 17
First fall frost
Oct 7
Growing season
144 days
Hardiness zone
6b

More local growing data for Pentwater: nearby ZIP 49449 weather · frost dates · planting calendar · Michigan frost dates

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Climate data from the nearest NOAA station, Ludington 4 Se, Mi (7.8 mi from Pentwater). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.