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.

16°F

-9°C

Humidity 80%
Wind Speed NW 17 G 38 mph
Barometer 29.66 in (1007.3 mb)
Dewpoint 11°F (-12°C)
Visibility NA
Wind Chill0°F (-18°C)
Last update 25 Dec 2:56 pm EST
Extended Forecast for

2 Miles S Lily Bay State Park ME

  • Christmas Day

    Christmas Day: Scattered snow showers. Patchy blowing snow. Mostly cloudy, with a steady temperature around 14. Wind chill values as low as -5. Northwest wind around 17 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    High: 14 °F

    Scattered
    Snow Showers
    and Patchy
    Blowing Snow

  • Tonight

    Tonight: Isolated snow showers before 8pm. Patchy blowing snow. Mostly cloudy, with a low around -1. Wind chill values as low as -21. Blustery, with a northwest wind 20 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 20%.

    Low: -1 °F

    Isolated Snow
    Showers and
    Patchy
    Blowing Snow

  • Friday

    Friday: Sunny and cold, with a high near 9. Wind chill values as low as -20. North wind 8 to 13 mph, with gusts as high as 23 mph.

    High: 9 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -1. Wind chill values as low as -10. North wind 3 to 6 mph.

    Low: -1 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 13. North wind 5 to 7 mph.

    High: 13 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 5. Northwest wind 7 to 9 mph.

    Low: 5 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 24. Northwest wind 6 to 8 mph.

    High: 24 °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. Patchy blowing snow. Mostly cloudy, with a steady temperature around 14. Wind chill values as low as -5. Northwest wind around 17 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Tonight
Isolated snow showers before 8pm. Patchy blowing snow. Mostly cloudy, with a low around -1. Wind chill values as low as -21. Blustery, with a northwest wind 20 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 20%.
Friday
Sunny and cold, with a high near 9. Wind chill values as low as -20. North wind 8 to 13 mph, with gusts as high as 23 mph.
Friday Night
Mostly cloudy, with a low around -1. Wind chill values as low as -10. North wind 3 to 6 mph.
Saturday
Partly sunny, with a high near 13. North wind 5 to 7 mph.
Saturday Night
Mostly clear, with a low around 5. Northwest wind 7 to 9 mph.
Sunday
Sunny, with a high near 24. Northwest wind 6 to 8 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. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 5.
Wednesday
Partly sunny, with a high near 18.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 3. Chance of precipitation is 30%.
New Year's Day
A slight chance of snow. Partly sunny, with a high near 13.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Lily Bay State Park ME
 45.53°N 69.56°W (Elev. 1056 ft)
Last Update:
4:02 pm EST Dec 25, 2025
Forecast Valid:
4pm EST Dec 25, 2025-6pm EST Jan 1, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation