Port Huron, MI Weather & Growing Conditions
Tonight
61°F
Mostly Cloudy
Mostly cloudy, with a low around 61. South wind around 10 mph, with gusts as high as 22 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 61°F | Mostly Cloudy | 10 mph S | 3% |
| Wednesday | 67°F | Light Rain | 9 to 16 mph S | 98% |
| Wednesday Night | 52°F | Light Rain then Mostly Cloudy | 7 to 16 mph SSW | 75% |
| Thursday | 61°F | Mostly Cloudy | 8 to 14 mph SW | 11% |
| Thursday Night | 47°F | Chance Light Rain | 3 to 8 mph WSW | 33% |
| Friday | 55°F | Chance Light Rain | 5 to 10 mph NW | 48% |
| Friday Night | 40°F | Chance Light Rain | 10 mph NW | 48% |
| Saturday | 51°F | Chance Light Rain | 10 mph NW | 32% |
| Saturday Night | 34°F | Partly Cloudy | 7 mph W | 9% |
| Sunday | 54°F | Mostly Sunny | 6 to 10 mph WSW | 13% |
| Sunday Night | 35°F | Partly Cloudy | 8 mph WNW | 13% |
| Monday | 56°F | Mostly Sunny | 7 to 10 mph W | 13% |
| Monday Night | 39°F | Partly Cloudy | 9 mph WSW | 13% |
| Tuesday | 58°F | Mostly Sunny | 8 to 12 mph W | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Port Huron, MI
Last spring frost
Apr 19
First fall frost
Nov 3
Growing season
196 days
Hardiness zone
6b
Explore more for Port Huron, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Port Huron, Mi (2.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.