Grand Haven, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grand Haven, a city in Ottawa County, Michigan.
Today
66°F
Rain Showers Likely
Rain showers likely before 5pm. Mostly cloudy. High near 66, with temperatures falling to around 60 in the afternoon. South wind around 17 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Grand Haven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 66°F | Rain Showers Likely | 17 mph S | 58% |
| Tonight | 47°F | Chance Rain Showers | 17 mph SW | 29% |
| Thursday | 56°F | Rain Showers | 15 to 18 mph WSW | 84% |
| Thursday Night | 39°F | Rain Showers | 10 to 14 mph NW | 84% |
| Friday | 52°F | Chance Rain Showers | 14 mph N | 48% |
| Friday Night | 36°F | Chance Rain Showers then Mostly Cloudy | 6 to 13 mph N | 41% |
| Saturday | 52°F | Mostly Sunny | 7 to 10 mph NNW | 6% |
| Saturday Night | 38°F | Partly Cloudy | 8 mph WNW | 5% |
| Sunday | 55°F | Slight Chance Rain Showers | 9 to 14 mph W | 18% |
| Sunday Night | 40°F | Slight Chance Rain Showers then Partly Cloudy | 6 to 12 mph WNW | 18% |
| Monday | 58°F | Mostly Sunny | 6 to 14 mph WSW | 5% |
| Monday Night | 44°F | Partly Cloudy | 12 mph WSW | 2% |
| Tuesday | 58°F | Mostly Sunny then Slight Chance Rain Showers | 12 mph WNW | 15% |
| Tuesday Night | 40°F | Slight Chance Rain Showers then Partly Cloudy | 3 to 7 mph NNW | 15% |
Forecast source: National Weather Service (api.weather.gov) for Grand Haven (43.055, -86.219). Updated through the day.
Growing snapshot for Grand Haven
Last spring frost
Apr 30
First fall frost
Oct 24
Growing season
175 days
Hardiness zone
6b
More local growing data for Grand Haven: nearby ZIP 49409 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Grand Haven Wwtp, Mi (1.5 mi from Grand Haven). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.