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.

Overcast

41°F

5°C

Humidity 70%
Wind Speed E 7 mph
Barometer 30.16 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 4 Apr 4:55 am EDT
Extended Forecast for

3 Miles S Fort Gratiot MI

  • Overnight

    Overnight: A chance of rain, then rain likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 36. East northeast wind around 7 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 36 °F

    Rain Likely

  • Saturday

    Saturday: Rain and thunderstorms likely, then rain and possibly a thunderstorm after 3pm. High near 62. East southeast wind 9 to 14 mph becoming south in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 62 °F

    Rain

  • Saturday Night

    Saturday Night: Rain and possibly a thunderstorm before 9pm, then a chance of rain between 9pm and 11pm. Low around 37. West wind around 11 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: 37 °F

    Rain then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 43. West wind 13 to 17 mph, with gusts as high as 28 mph.

    High: 43 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 31. West northwest wind 5 to 10 mph, with gusts as high as 18 mph.

    Low: 31 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of rain after 2pm. Partly sunny, with a high near 44. Chance of precipitation is 50%.

    High: 44 °F

    Mostly Cloudy
    then Chance
    Rain

  • Monday Night

    Monday Night: A chance of rain and snow before 11pm, then a chance of snow between 11pm and 2am. Mostly cloudy, with a low around 24. Chance of precipitation is 40%.

    Low: 24 °F

    Chance
    Rain/Snow
    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

Overnight
A chance of rain, then rain likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 36. East northeast wind around 7 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Rain and thunderstorms likely, then rain and possibly a thunderstorm after 3pm. High near 62. East southeast wind 9 to 14 mph becoming south in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Rain and possibly a thunderstorm before 9pm, then a chance of rain between 9pm and 11pm. Low around 37. West wind around 11 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 43. West wind 13 to 17 mph, with gusts as high as 28 mph.
Sunday Night
Mostly cloudy, with a low around 31. West northwest wind 5 to 10 mph, with gusts as high as 18 mph.
Monday
A chance of rain after 2pm. Partly sunny, with a high near 44. Chance of precipitation is 50%.
Monday Night
A chance of rain and snow before 11pm, then a chance of snow between 11pm and 2am. Mostly cloudy, with a low around 24. Chance of precipitation is 40%.
Tuesday
Mostly sunny, with a high near 34.
Tuesday Night
Mostly clear, with a low around 24.
Wednesday
Mostly sunny, with a high near 50.
Wednesday Night
Mostly cloudy, with a low around 43.
Thursday
A chance of rain. Partly sunny, with a high near 61.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 40.
Friday
Partly sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Fort Gratiot MI
 43.04°N 82.48°W (Elev. 620 ft)
Last Update:
4:25 am EDT Apr 4, 2026
Forecast Valid:
4am EDT Apr 4, 2026-6pm EDT Apr 10, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation