Bay City, MI Weather & Growing Conditions
Today
85°F
Sunny
Sunny, with a high near 85. Southwest wind around 12 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Sunny | 12 mph SW | 0% |
| Tonight | 61°F | Partly Cloudy | 6 to 9 mph SSW | 0% |
| Wednesday | 82°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 6 to 9 mph SW | 49% |
| Wednesday Night | 62°F | Showers And Thunderstorms | 3 to 8 mph WNW | 84% |
| Thursday | 78°F | Rain Showers | 7 mph NNE | 84% |
| Thursday Night | 59°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 to 6 mph SE | 30% |
| Friday | 83°F | Mostly Sunny | 2 to 6 mph SSW | 7% |
| Friday Night | 61°F | Mostly Clear | 5 mph SSW | 7% |
| Saturday | 86°F | Sunny | 5 to 14 mph SW | 6% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms | 6 to 13 mph SW | 32% |
| Sunday | 86°F | Chance Rain Showers | 6 to 16 mph SW | 32% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms | 7 to 15 mph W | 52% |
| Monday | 83°F | Chance Rain Showers | 7 to 10 mph WSW | 52% |
| Monday Night | 62°F | Chance Showers And Thunderstorms | 6 to 9 mph W | 48% |
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 Aug 4, 2026.