Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Light Rain

63°F

17°C

Humidity 83%
Wind Speed SW 7 mph
Barometer 29.82 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 15 Apr 9:55 am EDT
Extended Forecast for

2 Miles S Fort Gratiot MI

Flood Watch April 15, 10:10am until April 17, 02:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch April 15, 10:10am until April 17, 02:00am

    NOW until 2:00am Fri

    Flood Watch

  • Today

    High: 70 °F

    Chance
    Showers then
    Showers

  • Tonight

    Tonight: Showers and thunderstorms before 11pm, then showers and possibly a thunderstorm, mainly after 11pm.  Low around 57. South southwest wind around 7 mph.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Showers

  • Thursday

    Thursday: Showers, with thunderstorms also possible after 2pm.  High near 67. Southwest wind 7 to 10 mph.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 67 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am.  Mostly cloudy, with a low around 46. North northwest wind around 6 mph.  Chance of precipitation is 40%.

    Low: 46 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 62. North wind around 6 mph becoming east northeast in the afternoon.

    High: 62 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of showers after 2am.  Mostly cloudy, with a low around 50. Chance of precipitation is 30%.

    Low: 50 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: Showers, with thunderstorms also possible after 2pm.  High near 69. Chance of precipitation is 80%.

    High: 69 °F

    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers.  Mostly cloudy, with a low around 38.

    Low: 38 °F

    Showers
    Likely

Detailed Forecast

Today
Showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. High near 70. Southwest wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms before 11pm, then showers and possibly a thunderstorm, mainly after 11pm. Low around 57. South southwest wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers, with thunderstorms also possible after 2pm. High near 67. Southwest wind 7 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 46. North northwest wind around 6 mph. Chance of precipitation is 40%.
Friday
Partly sunny, with a high near 62. North wind around 6 mph becoming east northeast in the afternoon.
Friday Night
A chance of showers after 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
Saturday
Showers, with thunderstorms also possible after 2pm. High near 69. Chance of precipitation is 80%.
Saturday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Mostly cloudy, with a low around 38.
Sunday
A chance of snow showers before 2pm. Partly sunny, with a high near 46.
Sunday Night
Mostly cloudy, with a low around 29.
Monday
Mostly sunny, with a high near 47.
Monday Night
Partly cloudy, with a low around 35.
Tuesday
Mostly sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Fort Gratiot MI
 43.04°N 82.48°W (Elev. 620 ft)
4:25 am EDT Apr 15, 2026
10am EDT Apr 15, 2026-6pm EDT Apr 21, 2026
 
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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