Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Light Rain

41°F

5°C

Humidity 93%
Wind Speed Calm
Barometer 29.66 in
Dewpoint 39°F (4°C)
Visibility 5.00 mi
Last update 11 Mar 4:35 am EDT
Extended Forecast for

2 Miles S Fort Gratiot MI

Flood Watch until March 11, 02:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until March 11, 02:00pm

    NOW until 2:00pm Wed

    Flood Watch

  • Overnight

    Low: 37 °F

    Rain

  • Wednesday

    Wednesday: Rain and thunderstorms before 4pm, then rain likely.  Temperature rising to near 54 by noon, then falling to around 43 during the remainder of the day. South wind 8 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.  Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 54 °F

    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain before 7pm.  Mostly cloudy, with a low around 27. West northwest wind 14 to 16 mph, with gusts as high as 30 mph.  Chance of precipitation is 30%.

    Low: 27 °F

    Chance Rain
    then Mostly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 39. West northwest wind 11 to 14 mph, with gusts as high as 24 mph.

    High: 39 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Snow likely after 2am.  Increasing clouds, with a low around 28. West northwest wind 5 to 9 mph becoming south after midnight. Winds could gust as high as 18 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Partly Cloudy
    then Snow
    Likely

  • Friday

    Friday: Rain and snow likely before 8am, then rain likely between 8am and 5pm, then a chance of rain and snow after 5pm.  Mostly cloudy, with a high near 42. Breezy.  Chance of precipitation is 60%.

    High: 42 °F

    Rain/Snow
    Likely and
    Breezy

  • Friday Night

    Friday Night: A chance of snow before 8pm.  Mostly cloudy, with a low around 24. Breezy.  Chance of precipitation is 30%.

    Low: 24 °F

    Chance Snow
    and Breezy
    then Mostly
    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

Detailed Forecast

Overnight
Rain and possibly a thunderstorm before 5am, then a chance of rain and thunderstorms after 5am. Low around 37. South southeast wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Rain and thunderstorms before 4pm, then rain likely. Temperature rising to near 54 by noon, then falling to around 43 during the remainder of the day. South wind 8 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A chance of rain before 7pm. Mostly cloudy, with a low around 27. West northwest wind 14 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 39. West northwest wind 11 to 14 mph, with gusts as high as 24 mph.
Thursday Night
Snow likely after 2am. Increasing clouds, with a low around 28. West northwest wind 5 to 9 mph becoming south after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday
Rain and snow likely before 8am, then rain likely between 8am and 5pm, then a chance of rain and snow after 5pm. Mostly cloudy, with a high near 42. Breezy. Chance of precipitation is 60%.
Friday Night
A chance of snow before 8pm. Mostly cloudy, with a low around 24. Breezy. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 35.
Saturday Night
Snow likely, mainly after 2am. Mostly cloudy, with a low around 27.
Sunday
Rain and snow. Cloudy, with a high near 44.
Sunday Night
Rain and snow. Mostly cloudy, with a low around 22. Breezy.
Monday
Rain and snow likely. Mostly cloudy, with a high near 28. Breezy.
Monday Night
Mostly cloudy, with a low around 10.
Tuesday
Partly sunny, with a high near 25.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Fort Gratiot MI
 43.04°N 82.48°W (Elev. 620 ft)
4:24 am EDT Mar 11, 2026
4am EDT Mar 11, 2026-6pm EDT Mar 17, 2026
 
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Additional Resources

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