National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Overcast

64°F

18°C

Humidity 78%
Wind Speed N 9 mph
Barometer 29.92 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 22 Jun 10:35 am EDT
Extended Forecast for

3 Miles SE Fort Gratiot MI

  • Today

    Today: Mostly sunny, with a high near 68. North northeast wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 68 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 53. North wind 7 to 10 mph.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 69. North wind 7 to 9 mph.

    High: 69 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 53. North northeast wind around 5 mph becoming calm in the evening.

    Low: 53 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 75. Calm wind becoming south around 5 mph in the afternoon.

    High: 75 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers, then showers and possibly a thunderstorm after 2am. Low around 58. Chance of precipitation is 80%.

    Low: 58 °F

    Chance
    Showers then
    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 8am, then showers likely between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 75. Chance of precipitation is 80%.

    High: 75 °F

    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 57.

    Low: 57 °F

    Showers then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 68. North northeast wind 8 to 11 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 53. North wind 7 to 10 mph.
Tuesday
Sunny, with a high near 69. North wind 7 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 53. North northeast wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 75. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
A chance of showers, then showers and possibly a thunderstorm after 2am. Low around 58. Chance of precipitation is 80%.
Thursday
Showers and possibly a thunderstorm before 8am, then showers likely between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 75. Chance of precipitation is 80%.
Thursday Night
Showers and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 57.
Friday
Mostly sunny, with a high near 74.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 75.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Fort Gratiot MI
 43.03°N 82.45°W (Elev. 597 ft)
Last Update:
9:49 am EDT Jun 22, 2026
Forecast Valid:
10am EDT Jun 22, 2026-6pm EDT Jun 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation