National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Copper Harbor (KP59)

Lat: 47.47°NLon: 87.88°WElev: 623ft.

67°F

19°C

Humidity 76%
Wind Speed N 9 mph
Barometer 29.87 in (1010.6 mb)
Dewpoint 59°F (15°C)
Visibility NA
Last update 2 Sep 1:51 am EDT
Extended Forecast for

4 Miles E Isle Royale National Park MI

  • Overnight

    Overnight: Mostly cloudy, with a low around 59. West wind 5 to 10 mph.

    Low: 59 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 67. West wind around 5 mph becoming calm in the afternoon.

    High: 67 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 58. Southwest wind around 5 mph becoming northwest after midnight.

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 66. North wind around 5 mph becoming east in the afternoon.

    High: 66 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 58. East wind around 5 mph.

    Low: 58 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 2am. Mostly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 59. West wind 5 to 10 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 67. West wind around 5 mph becoming calm in the afternoon.
Wednesday Night
Partly cloudy, with a low around 58. Southwest wind around 5 mph becoming northwest after midnight.
Thursday
Mostly sunny, with a high near 66. North wind around 5 mph becoming east in the afternoon.
Thursday Night
Partly cloudy, with a low around 58. East wind around 5 mph.
Friday
Partly sunny, with a high near 65.
Friday Night
Mostly cloudy, with a low around 58.
Saturday
Partly sunny, with a high near 66.
Saturday Night
A chance of showers after 2am. Mostly cloudy, with a low around 59.
Sunday
A chance of showers before 2pm. Partly sunny, with a high near 69.
Sunday Night
Mostly cloudy, with a low around 54.
Labor Day
Partly sunny, with a high near 63.
Monday Night
A chance of showers. Mostly cloudy, with a low around 55.
Tuesday
A chance of showers. Partly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Isle Royale National Park MI
 48.13°N 88.53°W (Elev. 659 ft)
Last Update:
2:06 am EDT Sep 2, 2026
Forecast Valid:
2am EDT Sep 2, 2026-6pm EDT Sep 8, 2026
 
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