Pontiac, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pontiac, a city in Oakland County, Michigan.
Tonight
55°F
Mostly Cloudy then Slight Chance Rain Showers
A slight chance of rain showers after 4am. Mostly cloudy, with a low around 55. East northeast wind 5 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Pontiac
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 9 mph ENE | 21% |
| Saturday | 66°F | Rain Showers | 5 to 8 mph ESE | 82% |
| Saturday Night | 56°F | Showers And Thunderstorms | 5 to 8 mph E | 77% |
| Sunday | 66°F | Chance Rain Showers | 7 to 12 mph NNE | 51% |
| Sunday Night | 52°F | Chance Rain Showers then Mostly Cloudy | 8 to 12 mph NE | 41% |
| Monday | 63°F | Mostly Cloudy | 13 mph NE | 10% |
| Monday Night | 49°F | Mostly Cloudy | 12 mph NE | 10% |
| Tuesday | 62°F | Mostly Cloudy then Slight Chance Rain Showers | 14 mph NE | 15% |
| Tuesday Night | 51°F | Chance Rain Showers | 13 mph NE | 47% |
| Wednesday | 61°F | Chance Rain Showers | 13 mph ENE | 49% |
| Wednesday Night | 52°F | Chance Rain Showers | 7 to 10 mph NE | 49% |
| Thursday | 64°F | Partly Sunny | 9 mph NE | 14% |
| Thursday Night | 52°F | Mostly Cloudy | 5 to 8 mph NNE | 13% |
| Friday | 68°F | Mostly Sunny | 5 to 8 mph NNE | 8% |
Forecast source: National Weather Service (api.weather.gov) for Pontiac (42.649, -83.287). Updated through the day.
Growing snapshot for Pontiac
Last spring frost
Apr 26
First fall frost
Oct 22
Growing season
177 days
Hardiness zone
6a
More local growing data for Pontiac: nearby ZIP 48342 weather · frost dates · planting calendar · Michigan frost dates
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Climate data from the nearest NOAA station, Pontiac Wwtp, Mi (1 mi from Pontiac). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.