Swartz Creek, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Swartz Creek, a city in Genesee County, Michigan.
Tonight
57°F
Patchy Fog then Rain Showers Likely
Patchy fog between 11pm and midnight, then patchy fog and a slight chance of rain showers between midnight and 1am, then rain showers likely and patchy fog. Mostly cloudy, with a low around 57. East northeast wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Swartz Creek
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Patchy Fog then Rain Showers Likely | 6 mph ENE | 64% |
| Sunday | 68°F | Rain Showers | 6 to 13 mph NE | 76% |
| Sunday Night | 50°F | Mostly Cloudy | 7 to 13 mph NE | 7% |
| Monday | 62°F | Mostly Cloudy | 9 to 13 mph NE | 7% |
| Monday Night | 46°F | Mostly Cloudy | 7 to 12 mph NE | 3% |
| Tuesday | 62°F | Partly Sunny | 9 to 14 mph ENE | 5% |
| Tuesday Night | 49°F | Slight Chance Rain Showers | 13 mph ENE | 20% |
| Wednesday | 62°F | Chance Rain Showers | 14 mph ENE | 41% |
| Wednesday Night | 50°F | Chance Rain Showers | 7 to 12 mph E | 41% |
| Thursday | 66°F | Partly Sunny | 9 mph E | 10% |
| Thursday Night | 49°F | Mostly Cloudy | 2 to 8 mph ENE | 10% |
| Friday | 69°F | Mostly Sunny | 3 to 8 mph NE | 8% |
| Friday Night | 48°F | Partly Cloudy | 2 to 7 mph NNE | 4% |
| Saturday | 71°F | Sunny | 2 to 7 mph NNE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Swartz Creek (42.964, -83.816). Updated through the day.
Growing snapshot for Swartz Creek
Last spring frost
May 6
First fall frost
Oct 10
Growing season
155 days
Hardiness zone
6a
More local growing data for Swartz Creek: nearby ZIP 48473 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Argentine
Beecher
Burton
Clio
Davison
Flint
Flushing
Gaines
Goodrich
Grand Blanc
Linden
Montrose
Mount Morris
Otisville
Climate data from the nearest NOAA station, Flint Bishop Intl Ap, Mi (4.1 mi from Swartz Creek). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.