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.

Fair

57°F

14°C

Humidity 82%
Wind Speed Calm
Barometer 29.91 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 20 Jun 1:15 am EDT
Extended Forecast for

2 Miles S Fort Gratiot MI

  • Overnight

    Overnight: Mostly cloudy, with a low around 53. West wind around 5 mph.

    Low: 53 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 72. West southwest wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 72 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm, mainly before 8pm. Low around 54. Light west northwest wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 74. Light and variable wind becoming northeast around 6 mph in the afternoon.

    High: 74 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 56. East wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 56 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: Showers likely, mainly before 8am. Partly sunny, with a high near 68. Chance of precipitation is 60%.

    High: 68 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 53. West wind around 5 mph.
Saturday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 72. West southwest wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm, mainly before 8pm. Low around 54. Light west northwest wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Partly sunny, with a high near 74. Light and variable wind becoming northeast around 6 mph in the afternoon.
Sunday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 56. East wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Showers likely, mainly before 8am. Partly sunny, with a high near 68. Chance of precipitation is 60%.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 71.
Tuesday Night
Partly cloudy, with a low around 54.
Wednesday
A chance of showers after 2pm. Mostly sunny, with a high near 74.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 55.
Thursday
A chance of showers. Mostly sunny, with a high near 74.
Thursday Night
Partly cloudy, with a low around 55.
Friday
A chance of showers. Mostly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Fort Gratiot MI
 43.04°N 82.48°W (Elev. 620 ft)
Last Update:
4:25 pm EDT Jun 19, 2026
Forecast Valid:
1am EDT Jun 20, 2026-6pm EDT Jun 26, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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