South Lyon, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Lyon, a city in Oakland County, Michigan.
Overnight
60°F
Slight Chance Light Rain
A slight chance of rain. Mostly cloudy. Low around 60, with temperatures rising to around 62 overnight. South southeast wind around 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for South Lyon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 60°F | Slight Chance Light Rain | 13 mph SSE | 24% |
| Wednesday | 66°F | Light Rain | 14 to 18 mph S | 93% |
| Wednesday Night | 48°F | Light Rain then Mostly Cloudy | 10 to 14 mph SSW | 78% |
| Thursday | 58°F | Mostly Cloudy | 12 to 17 mph SW | 9% |
| Thursday Night | 41°F | Chance Light Rain | 3 to 9 mph W | 52% |
| Friday | 51°F | Light Rain Likely | 3 to 10 mph NW | 61% |
| Friday Night | 32°F | Light Rain Likely | 10 mph NNW | 61% |
| Saturday | 49°F | Partly Sunny | 9 to 14 mph NW | 10% |
| Saturday Night | 29°F | Partly Cloudy | 7 mph WNW | 3% |
| Sunday | 55°F | Mostly Sunny | 7 to 14 mph W | 6% |
| Sunday Night | 31°F | Partly Cloudy | 6 to 12 mph W | 6% |
| Monday | 57°F | Mostly Sunny | 6 to 12 mph W | 2% |
| Monday Night | 35°F | Partly Cloudy | 10 mph WSW | 2% |
| Tuesday | 60°F | Mostly Sunny then Slight Chance Light Rain | 9 to 13 mph W | 15% |
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 Nov 4, 2026.