Bay City, MI Weather & Growing Conditions
Today
86°F
Sunny
Sunny, with a high near 86. Southwest wind 6 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 6 to 10 mph SW | 0% |
| Tonight | 61°F | Mostly Clear | 6 to 9 mph SSW | 0% |
| Wednesday | 84°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 9 mph SW | 35% |
| Wednesday Night | 63°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 6 mph W | 82% |
| Thursday | 79°F | Rain Showers | 7 mph NNW | 82% |
| Thursday Night | 60°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 to 6 mph ESE | 31% |
| Friday | 84°F | Mostly Sunny | 2 to 6 mph SW | 10% |
| Friday Night | 62°F | Mostly Clear | 5 mph SSW | 10% |
| Saturday | 87°F | Sunny | 5 to 15 mph SW | 6% |
| Saturday Night | 65°F | Chance Rain Showers | 6 to 13 mph SW | 32% |
| Sunday | 87°F | Chance Rain Showers | 7 to 17 mph SW | 32% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 7 to 15 mph WSW | 52% |
| Monday | 84°F | Chance Rain Showers | 10 mph WSW | 52% |
| Monday Night | 64°F | Chance Showers And Thunderstorms | 6 to 9 mph W | 49% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Bay City, MI
Last spring frost
Apr 27
First fall frost
Oct 20
Growing season
173 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, Essexville, Mi (4.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.