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.

Fog/Mist

59°F

15°C

Humidity 100%
Wind Speed Calm
Barometer 30.14 in
Dewpoint 59°F (15°C)
Visibility 0.75 mi
Last update 15 Aug 6:16 am EDT
Extended Forecast for

3 Miles ENE Melvin MI

  • Today

    Today: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 86. Calm wind becoming south around 6 mph in the afternoon.

    High: 86 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 65. South southwest wind 3 to 5 mph.

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 89. Southwest wind 3 to 7 mph. Chance of precipitation is 30%.

    High: 89 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 5am, then a chance of showers. Mostly cloudy, with a low around 67. West northwest wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 67 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers before 8am. Partly sunny, with a high near 78. North northeast wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 78 °F

    Chance
    Showers then
    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 60.

    Low: 60 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 30%.

    High: 79 °F

    Partly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 61.

    Low: 61 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 8am. Partly sunny, with a high near 79.

    High: 79 °F

    Chance
    T-storms

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 86. Calm wind becoming south around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 65. South southwest wind 3 to 5 mph.
Saturday
A chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 89. Southwest wind 3 to 7 mph. Chance of precipitation is 30%.
Saturday Night
Showers and thunderstorms likely before 5am, then a chance of showers. Mostly cloudy, with a low around 67. West northwest wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A chance of showers before 8am. Partly sunny, with a high near 78. North northeast wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, with a low around 60.
Monday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Tuesday
A chance of showers, with thunderstorms also possible after 8am. Partly sunny, with a high near 79.
Tuesday Night
A chance of showers before 2am. Mostly cloudy, with a low around 63.
Wednesday
Mostly sunny, with a high near 79.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
Sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Melvin MI
 43.21°N 82.82°W (Elev. 830 ft)
Last Update:
5:13 am EDT Aug 15, 2025
Forecast Valid:
6am EDT Aug 15, 2025-6pm EDT Aug 21, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation