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

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Current conditions at

Copper Harbor (KP59)

Lat: 47.47°NLon: 87.88°WElev: 623ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Copper Harbor MI

Winter Weather Advisory December 26, 05:26am until December 26, 01:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 26, 05:26am until December 26, 01:00pm

    NOW until 1:00pm Fri

    Winter Weather Advisory

  • Overnight

    Low: 30 °F

    Heavy Snow
    and Breezy

  • Friday

    Friday: Snow, mainly before 11am. The snow could be heavy at times. High near 36. South wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    High: 36 °F

    Heavy Snow
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 32. Calm wind becoming south around 5 mph.

    Low: 32 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 37. South wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 37 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers. Cloudy, with a low around 34. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 34 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of rain showers before 1pm, then rain and snow showers likely between 1pm and 4pm, then snow showers likely after 4pm. Cloudy, with a high near 36. Chance of precipitation is 60%.

    High: 36 °F

    Chance
    Showers then
    Rain/Snow
    Likely

  • Sunday Night

    Sunday Night: Snow. Low around 17. Blustery. Chance of precipitation is 80%.

    Low: 17 °F

    Snow and
    Blustery

  • Monday

    Monday: Snow likely, mainly before 1pm. Cloudy, with a high near 20. Windy.

    High: 20 °F

    Snow Likely
    and Windy

Detailed Forecast

Overnight
Snow. The snow could be heavy at times. Steady temperature around 30. Breezy, with a south wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 2 to 4 inches possible.
Friday
Snow, mainly before 11am. The snow could be heavy at times. High near 36. South wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Friday Night
Mostly cloudy, with a low around 32. Calm wind becoming south around 5 mph.
Saturday
A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 37. South wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday Night
A 50 percent chance of showers. Cloudy, with a low around 34. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
A chance of rain showers before 1pm, then rain and snow showers likely between 1pm and 4pm, then snow showers likely after 4pm. Cloudy, with a high near 36. Chance of precipitation is 60%.
Sunday Night
Snow. Low around 17. Blustery. Chance of precipitation is 80%.
Monday
Snow likely, mainly before 1pm. Cloudy, with a high near 20. Windy.
Monday Night
A chance of snow showers after 1am. Cloudy, with a low around 13. Blustery.
Tuesday
Snow showers likely. Cloudy, with a high near 20. Blustery.
Tuesday Night
A chance of snow showers. Mostly cloudy, with a low around 8.
Wednesday
A chance of snow showers. Mostly cloudy, with a high near 13.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 6. Blustery.
New Year's Day
A chance of snow showers. Mostly cloudy, with a high near 16. Blustery.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Copper Harbor MI
 47.46°N 87.89°W (Elev. 719 ft)
Last Update:
5:13 am EST Dec 26, 2025
Forecast Valid:
5am EST Dec 26, 2025-6pm EST Jan 1, 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