Hazardous Weather Conditions

Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Fair

54°F

12°C

Humidity 58%
Wind Speed S 6 mph
Barometer 29.94 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 15 May 11:15 pm EDT
Extended Forecast for

Casco MI

  • Tonight

    Tonight: Mostly clear, with a low around 52. South wind around 8 mph.

    Low: 52 °F

    Mostly Clear

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly before 4pm.  Partly sunny, with a high near 79. South wind 10 to 13 mph, with gusts as high as 22 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Showers
    Likely then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 53. West wind 5 to 7 mph becoming light and variable  after midnight.

    Low: 53 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 76. Light and variable wind becoming southeast 5 to 7 mph in the afternoon.

    High: 76 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 59. South southeast wind 6 to 9 mph.

    Low: 59 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: A chance of showers and thunderstorms after 2am.  Partly cloudy, with a low around 65. Chance of precipitation is 40%.

    Low: 65 °F

    Partly Cloudy
    then Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm after 2pm.  Partly sunny, with a high near 82.

    High: 82 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers.  Mostly cloudy, with a low around 58.

    Low: 58 °F

    Showers
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 52. South wind around 8 mph.
Saturday
Showers and thunderstorms likely, mainly before 4pm. Partly sunny, with a high near 79. South wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Partly cloudy, with a low around 53. West wind 5 to 7 mph becoming light and variable after midnight.
Sunday
Partly sunny, with a high near 76. Light and variable wind becoming southeast 5 to 7 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 59. South southeast wind 6 to 9 mph.
Monday
Sunny, with a high near 88.
Monday Night
A chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 65. Chance of precipitation is 40%.
Tuesday
A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 82.
Tuesday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 58.
Wednesday
A chance of showers before 8am. Partly sunny, with a high near 67.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Mostly sunny, with a high near 62.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Mostly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
Casco MI
 42.74°N 82.67°W (Elev. 630 ft)
9:49 pm EDT May 15, 2026
11pm EDT May 15, 2026-6pm EDT May 22, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database