Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Fair

37°F

3°C

Humidity 75%
Wind Speed Calm
Barometer 30.10 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 30 Mar 12:15 am EDT
Extended Forecast for

2 Miles S Fort Gratiot MI

  • Overnight

    Overnight: Mostly clear, with a low around 40. South southwest wind around 8 mph.

    Low: 40 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, with a high near 62. Southwest wind around 8 mph.

    High: 62 °F

    Partly Sunny

  • Monday Night

    Monday Night: Rain likely, mainly after 2am.  Mostly cloudy, with a low around 49. South southwest wind 5 to 7 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Chance Rain
    then Rain
    Likely

  • Tuesday

    Tuesday: Rain likely and possibly a thunderstorm before 2pm, then rain between 2pm and 5pm, then rain and possibly a thunderstorm after 5pm.  High near 68. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 68 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm.  Low around 36. Southwest wind around 11 mph becoming northwest after midnight. Winds could gust as high as 23 mph.  Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 36 °F

    Rain

  • Wednesday

    Wednesday: A chance of rain before 8am.  Mostly cloudy, with a high near 42. Chance of precipitation is 30%.

    High: 42 °F

    Chance Rain
    then Mostly
    Cloudy

  • Wednesday Night

    Wednesday Night: A chance of rain after 2am.  Mostly cloudy, with a low around 32. Chance of precipitation is 40%.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain, mainly after 8am.  Mostly cloudy, with a high near 46.

    High: 46 °F

    Rain

  • Thursday Night

    Thursday Night: Rain.  Cloudy, with a low around 37.

    Low: 37 °F

    Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 40. South southwest wind around 8 mph.
Monday
Partly sunny, with a high near 62. Southwest wind around 8 mph.
Monday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 49. South southwest wind 5 to 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Rain likely and possibly a thunderstorm before 2pm, then rain between 2pm and 5pm, then rain and possibly a thunderstorm after 5pm. High near 68. South southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Rain and possibly a thunderstorm. Low around 36. Southwest wind around 11 mph becoming northwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday
A chance of rain before 8am. Mostly cloudy, with a high near 42. Chance of precipitation is 30%.
Wednesday Night
A chance of rain after 2am. Mostly cloudy, with a low around 32. Chance of precipitation is 40%.
Thursday
Rain, mainly after 8am. Mostly cloudy, with a high near 46.
Thursday Night
Rain. Cloudy, with a low around 37.
Friday
A chance of rain before 2pm. Mostly cloudy, with a high near 52.
Friday Night
A chance of rain. Mostly cloudy, with a low around 36.
Saturday
A chance of rain. Mostly cloudy, with a high near 58.
Saturday Night
Rain likely. Mostly cloudy, with a low around 44.
Sunday
A chance of rain. Mostly cloudy, with a high near 56.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Fort Gratiot MI
 43.04°N 82.48°W (Elev. 620 ft)
5:35 pm EDT Mar 29, 2026
12am EDT Mar 30, 2026-6pm EDT Apr 5, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database