Pentwater, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pentwater, a village in Oceana County, Michigan.
Tonight
51°F
Showers And Thunderstorms
Rain showers likely before 5am, then showers and thunderstorms. Cloudy. Low around 51, with temperatures rising to around 53 overnight. East wind 8 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Pentwater
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Showers And Thunderstorms | 8 to 12 mph E | 76% |
| Saturday | 66°F | Showers And Thunderstorms | 13 mph ESE | 84% |
| Saturday Night | 52°F | Showers And Thunderstorms Likely | 6 to 9 mph ENE | 60% |
| Sunday | 70°F | Slight Chance Rain Showers then Partly Sunny | 8 to 13 mph NE | 20% |
| Sunday Night | 50°F | Mostly Cloudy | 8 to 13 mph NE | 1% |
| Monday | 66°F | Mostly Cloudy | 12 mph ENE | 3% |
| Monday Night | 48°F | Mostly Cloudy | 10 mph ENE | 4% |
| Tuesday | 65°F | Partly Sunny | 12 mph NE | 12% |
| Tuesday Night | 49°F | Partly Cloudy then Slight Chance Rain Showers | 10 mph ENE | 20% |
| Wednesday | 65°F | Slight Chance Rain Showers then Mostly Sunny | 9 mph NE | 20% |
| Wednesday Night | 51°F | Partly Cloudy | 6 to 9 mph NE | 10% |
| Thursday | 67°F | Partly Sunny | 8 mph NNE | 2% |
| Thursday Night | 53°F | Partly Cloudy | 3 to 8 mph NNE | 3% |
| Friday | 69°F | Mostly Sunny | 5 to 8 mph NNE | 4% |
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
Nearby towns & communities
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.