Bay City, MI Weather & Growing Conditions
This Afternoon
64°F
Chance Rain Showers
A chance of rain showers. Mostly cloudy, with a high near 64. East wind around 8 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 64°F | Chance Rain Showers | 8 mph E | 29% |
| Tonight | 56°F | Chance Rain Showers | 8 mph E | 39% |
| Sunday | 68°F | Slight Chance Rain Showers then Mostly Cloudy | 9 to 17 mph NE | 15% |
| Sunday Night | 50°F | Mostly Cloudy | 12 to 17 mph NE | 7% |
| Monday | 61°F | Mostly Cloudy | 14 to 20 mph NE | 7% |
| Monday Night | 46°F | Mostly Cloudy | 12 to 20 mph ENE | 2% |
| Tuesday | 61°F | Partly Sunny | 12 to 21 mph ENE | 2% |
| Tuesday Night | 48°F | Mostly Cloudy | 14 to 20 mph ENE | 12% |
| Wednesday | 64°F | Chance Rain Showers | 14 to 18 mph ENE | 33% |
| Wednesday Night | 48°F | Chance Rain Showers | 9 to 15 mph E | 33% |
| Thursday | 66°F | Partly Sunny | 8 to 12 mph E | 9% |
| Thursday Night | 48°F | Partly Cloudy | 3 to 12 mph ENE | 7% |
| Friday | 69°F | Mostly Sunny | 3 to 10 mph NE | 7% |
| Friday Night | 47°F | Partly Cloudy | 3 to 9 mph NNE | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Bay City, MI
Last spring frost
May 3
First fall frost
Oct 14
Growing season
161 days
Hardiness zone
6a
Explore more for Bay City, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Auburn 2Ne, Mi (4.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.