Harman US

Port Huron, MI Weather & Growing Conditions

Today
67°F
Chance Rain Showers
A chance of rain showers between 9am and 5pm, then a chance of showers and thunderstorms. Cloudy. High near 67, with temperatures falling to around 64 in the afternoon. East southeast wind 5 to 8 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Today 67°F Chance Rain Showers 5 to 8 mph ESE 42%
Tonight 56°F Showers And Thunderstorms Likely 5 to 8 mph ESE 76%
Sunday 67°F Rain Showers Likely 6 to 14 mph NNE 68%
Sunday Night 52°F Partly Cloudy 10 to 15 mph NE 0%
Monday 62°F Partly Sunny 13 mph NE 0%
Monday Night 49°F Mostly Cloudy 8 to 12 mph NE 2%
Tuesday 64°F Partly Sunny 14 mph ENE 5%
Tuesday Night 50°F Chance Rain Showers 10 to 14 mph ENE 37%
Wednesday 63°F Chance Rain Showers 14 mph E 43%
Wednesday Night 50°F Chance Rain Showers 7 to 12 mph E 36%
Thursday 65°F Chance Rain Showers 9 mph ENE 25%
Thursday Night 50°F Mostly Cloudy 5 to 8 mph ENE 13%
Friday 67°F Mostly Sunny 5 to 10 mph NE 10%
Friday Night 51°F Partly Cloudy 3 to 9 mph NE 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 Sep 19, 2026.