Port Huron, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Port Huron, a city in St. Clair County, Michigan.
Today
83°F
Sunny
Sunny, with a high near 83. South southwest wind 3 to 7 mph.
7-day forecast for Port Huron
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 3 to 7 mph SSW | 0% |
| Tonight | 60°F | Mostly Clear | 3 to 8 mph S | 0% |
| Wednesday | 86°F | Sunny | 2 to 7 mph SSW | 0% |
| Wednesday Night | 66°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 2 to 7 mph SSW | 22% |
| Thursday | 81°F | Showers And Thunderstorms Likely | 2 to 8 mph WSW | 69% |
| Thursday Night | 64°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 1 to 6 mph NNE | 69% |
| Friday | 82°F | Chance Showers And Thunderstorms | 1 to 5 mph SW | 47% |
| Friday Night | 65°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 mph S | 44% |
| Saturday | 86°F | Sunny | 2 to 8 mph SW | 12% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 3 to 7 mph SSW | 31% |
| Sunday | 88°F | Chance Rain Showers | 3 to 12 mph SW | 31% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 6 to 10 mph WSW | 45% |
| Monday | 84°F | Chance Rain Showers | 9 mph W | 45% |
| Monday Night | 66°F | Chance Showers And Thunderstorms | 3 to 7 mph WSW | 46% |
Forecast source: National Weather Service (api.weather.gov) for Port Huron (42.994, -82.434). Updated through the day.
Growing snapshot for Port Huron
Last spring frost
Apr 19
First fall frost
Nov 3
Growing season
196 days
Hardiness zone
6b
More local growing data for Port Huron: nearby ZIP 48060 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Port Huron, Mi (2.1 mi from Port Huron). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.