Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Freezing Fog

28°F

-2°C

Humidity 93%
Wind Speed S 5 mph
Barometer 30.26 in
Dewpoint 27°F (-3°C)
Visibility 0.25 mi
Wind Chill22°F (-6°C)
Last update 4 Mar 6:36 am EST
Extended Forecast for

2 Miles S Fort Gratiot MI

Dense Fog Advisory until March 4, 10:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory until March 4, 10:00am

    NOW until 10:00am Wed

    Dense Fog Advisory

  • Today

    High: 45 °F

    Areas Fog
    then Sunny

  • Tonight

    Tonight: A slight chance of rain before 3am, then a slight chance of freezing rain between 3am and 4am, then a slight chance of rain after 4am.  Mostly cloudy, with a low around 31. Calm wind.  Chance of precipitation is 20%.

    Low: 31 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Freezing
    Rain

  • Thursday

    Thursday: Rain, mainly after 1pm.  High near 42. East northeast wind 5 to 8 mph.  Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 42 °F

    Chance Rain
    then Rain

  • Thursday Night

    Thursday Night: A chance of rain before 1am.  Cloudy, with a low around 36. East northeast wind 3 to 6 mph.  Chance of precipitation is 30%.

    Low: 36 °F

    Chance Rain

  • Friday

    Friday: Mostly cloudy, with a high near 56. Light south southeast wind becoming south 5 to 9 mph in the morning.

    High: 56 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Rain likely and possibly a thunderstorm before 10pm, then rain likely between 10pm and 4am, then rain likely and possibly a thunderstorm after 4am.  Mostly cloudy, with a low around 50. Chance of precipitation is 70%.

    Low: 50 °F

    Rain Likely

  • Saturday

    Saturday: Rain and possibly a thunderstorm.  High near 62. Chance of precipitation is 80%.

    High: 62 °F

    Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

Detailed Forecast

Today
Areas of fog before 8am. Otherwise, mostly sunny, with a high near 45. Calm wind becoming southeast around 5 mph.
Tonight
A slight chance of rain before 3am, then a slight chance of freezing rain between 3am and 4am, then a slight chance of rain after 4am. Mostly cloudy, with a low around 31. Calm wind. Chance of precipitation is 20%.
Thursday
Rain, mainly after 1pm. High near 42. East northeast wind 5 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
A chance of rain before 1am. Cloudy, with a low around 36. East northeast wind 3 to 6 mph. Chance of precipitation is 30%.
Friday
Mostly cloudy, with a high near 56. Light south southeast wind becoming south 5 to 9 mph in the morning.
Friday Night
Rain likely and possibly a thunderstorm before 10pm, then rain likely between 10pm and 4am, then rain likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 50. Chance of precipitation is 70%.
Saturday
Rain and possibly a thunderstorm. High near 62. Chance of precipitation is 80%.
Saturday Night
Partly cloudy, with a low around 33.
Sunday
Mostly sunny, with a high near 54.
Sunday Night
Mostly clear, with a low around 37.
Monday
Sunny, with a high near 59.
Monday Night
Mostly clear, with a low around 47.
Tuesday
A chance of rain. Partly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Fort Gratiot MI
 43.04°N 82.48°W (Elev. 620 ft)
3:24 am EST Mar 4, 2026
6am EST Mar 4, 2026-6pm EDT Mar 10, 2026
 
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Additional Resources

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