


Current conditions at
St Clair County International Airport (KPHN)
Lat: 42.91°NLon: 82.53°WElev: 636ft.
Fair
73°F
23°C
Humidity | 47% |
Wind Speed | NE 9 mph |
Barometer | 30.22 in |
Dewpoint | 52°F (11°C) |
Visibility | 10.00 mi |
Last update | 11 Sep 4:55 pm EDT |
Extended Forecast for
3 Miles S Fort Gratiot MI
Tonight
Low: 53 °F
Mostly Clear
then Patchy
FogFriday
High: 76 °F
Patchy Fog
then SunnyFriday Night
Low: 57 °F
Partly Cloudy
Saturday
High: 79 °F
Partly Sunny
Saturday Night
Low: 58 °F
Partly Cloudy
Sunday
High: 80 °F
Mostly Sunny
Sunday Night
Low: 58 °F
Mostly Clear
Monday
High: 82 °F
Sunny
Monday Night
Low: 57 °F
Mostly Clear
Detailed Forecast
Tonight
Patchy fog after 3am. Otherwise, mostly clear, with a low around 53. North northeast wind 5 to 8 mph.
Friday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 76. Calm wind becoming east northeast around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 57. Light and variable wind becoming south around 5 mph after midnight.
Saturday
Partly sunny, with a high near 79. West wind 5 to 7 mph.
Saturday Night
Partly cloudy, with a low around 58. Light south southeast wind.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 58.
Monday
Sunny, with a high near 82.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 57.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
Mostly sunny, with a high near 82.
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
3 Miles S Fort Gratiot MI
43.04°N 82.48°W (Elev. 620 ft)
43.04°N 82.48°W (Elev. 620 ft)
4:24 pm EDT Sep 11, 2025
5pm EDT Sep 11, 2025-6pm EDT Sep 18, 2025