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

Greenville (KGNR)

Lat: 45.46°NLon: 69.55°WElev: 1394ft.

19°F

-7°C

Humidity 92%
Wind Speed NW 15 G 25 mph
Barometer 29.62 in (1005.5 mb)
Dewpoint 17°F (-8°C)
Visibility NA
Wind Chill5°F (-15°C)
Last update 25 Dec 11:56 am EST
Extended Forecast for

Lily Bay State Park ME

  • Christmas Day

    Christmas Day: Scattered snow showers, mainly before 2pm. Patchy blowing snow after 2pm. Mostly cloudy, with a high near 22. Wind chill values as low as -3. Blustery, with a northwest wind 15 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 40%.

    High: 22 °F

    Scattered
    Snow Showers
    and Patchy
    Blowing Snow

  • Tonight

    Tonight: Patchy blowing snow. Mostly cloudy, with a low around 1. Wind chill values as low as -18. Blustery, with a northwest wind 22 to 25 mph, with gusts as high as 41 mph.

    Low: 1 °F

    Patchy
    Blowing Snow
    and Blustery

  • Friday

    Friday: Sunny and cold, with a high near 9. Wind chill values as low as -19. North wind 10 to 15 mph, with gusts as high as 26 mph.

    High: 9 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -1. Wind chill values as low as -12. North wind around 7 mph.

    Low: -1 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 14. North wind 6 to 8 mph.

    High: 14 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 4. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 4 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 23. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.

    High: 23 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 12.

    Low: 12 °F

    Mostly Cloudy

  • Monday

    Monday: Snow, mainly after 10am. High near 28. Chance of precipitation is 90%.

    High: 28 °F

    Snow Likely
    then Snow

Detailed Forecast

Christmas Day
Scattered snow showers, mainly before 2pm. Patchy blowing snow after 2pm. Mostly cloudy, with a high near 22. Wind chill values as low as -3. Blustery, with a northwest wind 15 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 40%.
Tonight
Patchy blowing snow. Mostly cloudy, with a low around 1. Wind chill values as low as -18. Blustery, with a northwest wind 22 to 25 mph, with gusts as high as 41 mph.
Friday
Sunny and cold, with a high near 9. Wind chill values as low as -19. North wind 10 to 15 mph, with gusts as high as 26 mph.
Friday Night
Mostly cloudy, with a low around -1. Wind chill values as low as -12. North wind around 7 mph.
Saturday
Partly sunny, with a high near 14. North wind 6 to 8 mph.
Saturday Night
Mostly clear, with a low around 4. Northwest wind around 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 23. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly cloudy, with a low around 12.
Monday
Snow, mainly after 10am. High near 28. Chance of precipitation is 90%.
Monday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 12. Chance of precipitation is 70%.
Tuesday
A slight chance of snow. Mostly cloudy, with a high near 15. Breezy. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 5. Breezy.
Wednesday
Mostly cloudy, with a high near 18.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lily Bay State Park ME
 45.57°N 69.55°W (Elev. 1056 ft)
Last Update:
12:43 pm EST Dec 25, 2025
Forecast Valid:
12pm EST Dec 25, 2025-6pm EST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation