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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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
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.