Byron, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Byron, a village in Shiawassee County, Michigan.
Tonight
54°F
Mostly Cloudy then Slight Chance Rain Showers
A slight chance of rain showers after 2am. Mostly cloudy. Low around 54, with temperatures rising to around 56 overnight. East northeast wind 5 to 9 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Byron
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 9 mph ENE | 21% |
| Saturday | 64°F | Showers And Thunderstorms | 5 to 8 mph E | 85% |
| Saturday Night | 56°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 8 mph E | 84% |
| Sunday | 66°F | Chance Rain Showers | 7 to 13 mph NNE | 50% |
| Sunday Night | 50°F | Chance Rain Showers then Mostly Cloudy | 7 to 13 mph NE | 42% |
| Monday | 62°F | Mostly Cloudy | 9 to 13 mph NE | 8% |
| Monday Night | 47°F | Mostly Cloudy | 8 to 13 mph NE | 8% |
| Tuesday | 62°F | Partly Sunny | 10 to 14 mph NE | 12% |
| Tuesday Night | 49°F | Chance Rain Showers | 9 to 13 mph NE | 43% |
| Wednesday | 62°F | Chance Rain Showers | 12 mph ENE | 43% |
| Wednesday Night | 50°F | Chance Rain Showers | 6 to 10 mph NE | 34% |
| Thursday | 65°F | Partly Sunny | 6 to 9 mph NNE | 11% |
| Thursday Night | 50°F | Mostly Cloudy | 3 to 8 mph NNE | 11% |
| Friday | 68°F | Mostly Sunny | 3 to 8 mph N | 7% |
Forecast source: National Weather Service (api.weather.gov) for Byron (42.821, -83.950). Updated through the day.
Growing snapshot for Byron
Last spring frost
May 3
First fall frost
Oct 12
Growing season
161 days
Hardiness zone
6a
More local growing data for Byron: nearby ZIP 48418 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Bancroft
Corunna
Durand
Henderson
Laingsburg
Lake Victoria
Lennon
Middletown
Morrice
New Lothrop
Owosso
Perry
Shaftsburg
Vernon
Climate data from the nearest NOAA station, Linden Wwtp, Mi (8.5 mi from Byron). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.