Hazardous Weather Conditions

Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Overcast

82°F

28°C

Humidity 62%
Wind Speed Calm
Barometer 29.94 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 13 Jul 5:55 pm EDT
Extended Forecast for

3 Miles S Fort Gratiot MI

  • This Afternoon

    This Afternoon: A slight chance of showers.  Mostly sunny, with a steady temperature around 82. West northwest wind around 6 mph.  Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 64. North northeast wind around 5 mph becoming light and variable.

    Low: 64 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 84. West northwest wind around 6 mph.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 87. Calm wind becoming south around 6 mph in the afternoon.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm, mainly after 2pm.  Partly sunny, with a high near 86. Chance of precipitation is 60%.

    High: 86 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am.  Mostly cloudy, with a low around 71.

    Low: 71 °F

    Showers
    Likely then
    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm.  Partly sunny, with a high near 84.

    High: 84 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
A slight chance of showers. Mostly sunny, with a steady temperature around 82. West northwest wind around 6 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, with a low around 64. North northeast wind around 5 mph becoming light and variable.
Monday
Sunny, with a high near 84. West northwest wind around 6 mph.
Monday Night
Mostly clear, with a low around 66. Calm wind.
Tuesday
Sunny, with a high near 87. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 71.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 84.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 66.
Friday
A chance of showers. Partly sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 62.
Saturday
Mostly sunny, with a high near 79.
Saturday Night
Partly cloudy, with a low around 64.
Sunday
A chance of showers. Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Fort Gratiot MI
 43.04°N 82.48°W (Elev. 620 ft)
5:13 pm EDT Jul 13, 2025
5pm EDT Jul 13, 2025-6pm EDT Jul 20, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database