Byron, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Byron, a village in Shiawassee County, Michigan.
This Afternoon
74°F
Mostly Sunny
Mostly sunny. High near 74, with temperatures falling to around 72 in the afternoon. South wind around 14 mph, with gusts as high as 25 mph.
7-day forecast for Byron
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Mostly Sunny | 14 mph S | 2% |
| Tonight | 62°F | Partly Cloudy | 13 mph S | 6% |
| Wednesday | 69°F | Light Rain | 16 mph S | 92% |
| Wednesday Night | 50°F | Light Rain then Mostly Cloudy | 8 to 13 mph SSW | 79% |
| Thursday | 59°F | Mostly Cloudy then Slight Chance Light Rain | 10 to 16 mph SW | 20% |
| Thursday Night | 45°F | Chance Light Rain | 5 to 8 mph W | 43% |
| Friday | 53°F | Chance Light Rain | 5 to 10 mph NW | 49% |
| Friday Night | 36°F | Chance Light Rain | 7 to 10 mph NNW | 48% |
| Saturday | 51°F | Slight Chance Light Rain then Partly Sunny | 9 mph NW | 19% |
| Saturday Night | 32°F | Partly Cloudy | 5 mph WSW | 5% |
| Sunday | 55°F | Mostly Sunny then Slight Chance Light Rain | 5 to 12 mph WSW | 16% |
| Sunday Night | 34°F | Slight Chance Light Rain then Partly Cloudy | 6 to 9 mph WNW | 16% |
| Monday | 57°F | Mostly Sunny | 6 to 12 mph W | 10% |
| Monday Night | 38°F | Partly Cloudy | 10 mph WSW | 10% |
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 Nov 4, 2026.