South Lyon, MI Weather & Growing Conditions
Today
85°F
Sunny
Sunny, with a high near 85. South southwest wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Sunny | 7 mph SSW | 0% |
| Tonight | 59°F | Mostly Clear | 3 to 8 mph SSW | 0% |
| Wednesday | 86°F | Sunny | 3 to 10 mph SW | 4% |
| Wednesday Night | 65°F | Mostly Cloudy then Showers And Thunderstorms Likely | 2 to 9 mph WSW | 58% |
| Thursday | 82°F | Showers And Thunderstorms Likely | 3 to 8 mph WSW | 74% |
| Thursday Night | 62°F | Showers And Thunderstorms Likely | 2 to 6 mph SW | 74% |
| Friday | 84°F | Chance Showers And Thunderstorms | 2 to 6 mph SSW | 33% |
| Friday Night | 63°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 to 6 mph SW | 33% |
| Saturday | 86°F | Mostly Sunny | 3 to 10 mph WSW | 6% |
| Saturday Night | 65°F | Mostly Clear then Chance Rain Showers | 5 to 10 mph SW | 27% |
| Sunday | 88°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 15 mph SW | 27% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms | 9 to 15 mph WSW | 43% |
| Monday | 86°F | Chance Rain Showers | 10 mph W | 43% |
| Monday Night | 65°F | Chance Showers And Thunderstorms | 7 to 10 mph W | 46% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for South Lyon, MI
Last spring frost
May 6
First fall frost
Oct 12
Growing season
157 days
Hardiness zone
6a
Explore more for South Lyon, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Milford Gm Proving Ground, Mi (6.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.