Grand Blanc, MI Weather & Growing Conditions
Today
65°F
Rain Showers
Rain showers before 2pm, then showers and thunderstorms likely. Cloudy. High near 65, with temperatures falling to around 63 in the afternoon. Southeast wind around 8 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 65°F | Rain Showers | 8 mph SE | 78% |
| Tonight | 57°F | Patchy Fog | 8 mph ESE | 82% |
| Sunday | 69°F | Rain Showers Likely | 6 to 13 mph NE | 62% |
| Sunday Night | 50°F | Mostly Cloudy | 7 to 12 mph NE | 1% |
| Monday | 61°F | Mostly Cloudy | 9 to 13 mph NE | 1% |
| Monday Night | 46°F | Mostly Cloudy | 7 to 12 mph NE | 3% |
| Tuesday | 62°F | Partly Sunny | 9 to 14 mph ENE | 5% |
| Tuesday Night | 48°F | Chance Rain Showers | 13 mph ENE | 39% |
| Wednesday | 62°F | Chance Rain Showers | 14 mph ENE | 45% |
| Wednesday Night | 49°F | Chance Rain Showers | 7 to 10 mph ENE | 45% |
| Thursday | 65°F | Slight Chance Rain Showers | 9 mph ENE | 18% |
| Thursday Night | 49°F | Slight Chance Rain Showers then Mostly Cloudy | 3 to 8 mph NE | 15% |
| Friday | 69°F | Mostly Sunny | 5 to 8 mph NE | 9% |
| Friday Night | 48°F | Mostly Clear | 3 to 8 mph NE | 9% |
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.