Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Overcast

63°F

17°C

Humidity 73%
Wind Speed S 10 G 18 mph
Barometer 29.85 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 4 Apr 2:35 pm EDT
Extended Forecast for

2 Miles WSW Fort Gratiot MI

Flood Watch until April 5, 12:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until April 5, 12:00am

    NOW until 12:00am Sun

    Flood Watch

  • This Afternoon

    High: 59 °F

    Rain

  • Tonight

    Tonight: Rain and possibly a thunderstorm before 9pm, then a chance of rain between 9pm and 11pm.  Low around 36. West wind 11 to 13 mph, with gusts as high as 23 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 36 °F

    Rain then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 44. West wind 13 to 17 mph, with gusts as high as 28 mph.

    High: 44 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 31. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 31 °F

    Mostly Cloudy

  • Monday

    Monday: Rain likely after 2pm, mixing with snow after 5pm.  Partly sunny, with a high near 44. West northwest wind 6 to 10 mph.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 44 °F

    Mostly Cloudy
    then
    Rain/Snow
    Likely

  • Monday Night

    Monday Night: Rain and snow likely before 11pm, then a chance of snow between 11pm and 2am.  Mostly cloudy, with a low around 22. Chance of precipitation is 60%.

    Low: 22 °F

    Rain/Snow
    Likely then
    Chance Snow

  • Tuesday

    Tuesday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Rain, with thunderstorms also possible after 5pm. High near 59. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Rain and possibly a thunderstorm before 9pm, then a chance of rain between 9pm and 11pm. Low around 36. West wind 11 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Mostly cloudy, with a high near 44. West wind 13 to 17 mph, with gusts as high as 28 mph.
Sunday Night
Mostly cloudy, with a low around 31. West wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Rain likely after 2pm, mixing with snow after 5pm. Partly sunny, with a high near 44. West northwest wind 6 to 10 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Monday Night
Rain and snow likely before 11pm, then a chance of snow between 11pm and 2am. Mostly cloudy, with a low around 22. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 34.
Tuesday Night
Mostly clear, with a low around 24.
Wednesday
Mostly sunny, with a high near 51.
Wednesday Night
Mostly cloudy, with a low around 43.
Thursday
A chance of rain. Partly sunny, with a high near 63.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 38.
Friday
A chance of rain. Mostly cloudy, with a high near 54.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Fort Gratiot MI
 43.06°N 82.54°W (Elev. 669 ft)
2:49 pm EDT Apr 4, 2026
2pm EDT Apr 4, 2026-6pm EDT Apr 10, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database