Grand Blanc, MI Weather & Growing Conditions
This Afternoon
64°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms. Cloudy. High near 64, with temperatures falling to around 62 in the afternoon. East southeast wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 64°F | Chance Showers And Thunderstorms | 8 mph ESE | 52% |
| Tonight | 58°F | Slight Chance Showers And Thunderstorms then Patchy Fog | 3 to 8 mph E | 83% |
| Sunday | 68°F | Rain Showers Likely | 6 to 12 mph NE | 68% |
| Sunday Night | 50°F | Mostly Cloudy | 7 to 12 mph NE | 5% |
| Monday | 62°F | Mostly Cloudy | 12 mph NE | 5% |
| Monday Night | 47°F | Mostly Cloudy | 7 to 12 mph NE | 2% |
| Tuesday | 62°F | Partly Sunny | 9 to 14 mph ENE | 5% |
| Tuesday Night | 50°F | Slight Chance Rain Showers | 13 mph ENE | 22% |
| Wednesday | 62°F | Chance Rain Showers | 14 mph ENE | 43% |
| Wednesday Night | 50°F | Chance Rain Showers | 7 to 12 mph E | 43% |
| Thursday | 65°F | Partly Sunny | 9 mph E | 12% |
| Thursday Night | 49°F | Mostly Cloudy | 3 to 8 mph ENE | 11% |
| Friday | 69°F | Mostly Sunny | 3 to 8 mph NE | 8% |
| Friday Night | 48°F | Partly Cloudy | 2 to 7 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Grand Blanc, MI
Last spring frost
May 1
First fall frost
Oct 14
Growing season
164 days
Hardiness zone
6a
Explore more for Grand Blanc, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Goodrich, Mi (6.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.