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 >

Current conditions at

Copper Harbor (KP59)

Lat: 47.47° N Lon: 87.88° W Elev: 623 ft.

Breezy

33°F

1°C

Humidity 78%
Wind Speed NE 24 G 30 mph
Barometer 30.09 in (1020.1 mb)
Dewpoint 27°F (-3°C)
Visibility NA
Wind Chill20°F (-7°C)
Last update 24 Dec 8:51 pm EST
Detailed forecast for

Keweenaw County

Late This Afternoon
Mostly cloudy. West winds 5 to 10 mph with gusts up to 20 mph.
Tonight
Partly cloudy in the evening, then becoming cloudy. Lows 12 to 17. North winds 10 to 20 mph.
Christmas Day
A chance of snow showers in the afternoon. Cloudy. Highs around 25. Northeast winds 5 to 15 mph, becoming east in the afternoon. Chance of snow 50 percent.
Thursday Night
Snow showers likely in the evening, then snow showers after midnight. Snow may be heavy at times after midnight. Snow accumulation of 3 to 5 inches. Lows around 21. Southeast winds 10 to 20 mph with gusts up to 35 mph. Chance of snow 90 percent.
Friday
Snow showers likely in the morning. Cloudy. Highs around 32. South winds 5 to 15 mph with gusts up to 30 mph. Chance of snow 70 percent.
Friday Night
Cloudy. Lows 25 to 30. South winds 5 to 10 mph.
Saturday
A chance of rain showers in the afternoon. Cloudy. Highs around 35. Chance of rain 30 percent.
Saturday Night
Cloudy with a chance of rain and snow showers. Lows around 27. Chance of precipitation 50 percent.
Sunday
A chance of rain and snow showers in the morning, then snow showers likely in the afternoon. Cloudy. Highs around 33. Chance of precipitation 70 percent.
Sunday Night
Breezy. Snow showers. Heavy freezing spray. Lows 9 to 14 above. Chance of snow 80 percent.
Monday
Breezy, colder. Cloudy with a 50 percent chance of snow showers. Heavy freezing spray. Highs around 13 inland to around 19 at the shore.
Monday Night
Heavy freezing spray in the evening. A chance of snow showers after midnight. Cloudy. Lows 6 to 11 above. Chance of snow 40 percent.
Tuesday
Warmer. Cloudy with a 50 percent chance of snow showers. Highs 20 to 25.
Tuesday Night And Wednesday
Colder. Cloudy with snow showers likely. Lows 2 to 7 above. Highs around 9 above inland to around 16 at the shore. Chance of snow 60 percent.



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412 PM EST Wed Dec 24 2025
 
 

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