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

Hazardous Weather Conditions

Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Partly Cloudy

86°F

30°C

Humidity 55%
Wind Speed NW 5 mph
Barometer 29.96 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 13 Jul 4:35 pm EDT
Extended Forecast for

3 Miles N Fort Gratiot MI

  • This Afternoon

    This Afternoon: A slight chance of showers. Mostly sunny, with a high near 83. West northwest wind around 7 mph. Chance of precipitation is 20%.

    High: 83 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 65. Northeast wind around 6 mph becoming light and variable.

    Low: 65 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 83. West northwest wind 5 to 7 mph.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 66. Light and variable wind.

    Low: 66 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85. Calm wind becoming south around 6 mph in the afternoon.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 60%.

    High: 84 °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 83.

    High: 83 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
A slight chance of showers. Mostly sunny, with a high near 83. West northwest wind around 7 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, with a low around 65. Northeast wind around 6 mph becoming light and variable.
Monday
Sunny, with a high near 83. West northwest wind 5 to 7 mph.
Monday Night
Mostly clear, with a low around 66. Light and variable wind.
Tuesday
Sunny, with a high near 85. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 84. 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 83.
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 74.
Friday Night
Partly cloudy, with a low around 62.
Saturday
Mostly sunny, with a high near 77.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Fort Gratiot MI
 43.12°N 82.5°W (Elev. 600 ft)
Last Update:
4:24 pm EDT Jul 13, 2025
Forecast Valid:
4pm EDT Jul 13, 2025-6pm EDT Jul 19, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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