South Lyon, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Lyon, a city in Oakland County, Michigan.
Today
85°F
Sunny
Sunny, with a high near 85. South southwest wind 3 to 8 mph.
7-day forecast for South Lyon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Sunny | 3 to 8 mph SSW | 0% |
| Tonight | 58°F | Mostly Clear | 2 to 9 mph S | 0% |
| Wednesday | 86°F | Sunny | 1 to 8 mph SSW | 3% |
| Wednesday Night | 64°F | Mostly Cloudy then Showers And Thunderstorms Likely | 2 to 8 mph WSW | 57% |
| Thursday | 82°F | Showers And Thunderstorms Likely | 3 to 8 mph WSW | 74% |
| Thursday Night | 62°F | Showers And Thunderstorms Likely | 1 to 6 mph SW | 74% |
| Friday | 84°F | Chance Showers And Thunderstorms | 2 to 6 mph SSW | 33% |
| Friday Night | 62°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 | 8 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 | 47% |
Forecast source: National Weather Service (api.weather.gov) for South Lyon (42.461, -83.653). Updated through the day.
Growing snapshot for South Lyon
Last spring frost
May 5
First fall frost
Oct 13
Growing season
160 days
Hardiness zone
6a
More local growing data for South Lyon: nearby ZIP 48178 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Auburn Hills
Berkley
Beverly Hills
Bingham Farms
Birmingham
Bloomfield Hills
Clawson
Farmington
Farmington Hills
Ferndale
Franklin
Hazel Park
Holly
Huntington Woods
Keego Harbor
Lake Angelus
Lake Orion
Lathrup Village
Leonard
Madison Heights
Milford
Northville
Novi
Oak Park
Orchard Lake Village
Ortonville
Oxford
Pleasant Ridge
Pontiac
Rochester
Climate data from the nearest NOAA station, Whitmore Lake 1Nw, Mi (6.5 mi from South Lyon). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.