Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Current conditions at

Greenville (KGNR)

Lat: 45.46°NLon: 69.55°WElev: 1394ft.

13°F

-11°C

Humidity 88%
Wind Speed E 14 mph
Barometer 29.81 in (1012.3 mb)
Dewpoint 10°F (-12°C)
Visibility NA
Wind Chill-2°F (-19°C)
Last update 24 Dec 2:56 am EST
Extended Forecast for

4 Miles NW Greenville Junction ME

Winter Weather Advisory December 24, 03:49am until December 24, 12:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 24, 03:49am until December 24, 12:00pm

    NOW until 12:00pm Wed

    Winter Weather Advisory

  • Overnight

    Low: 14 °F

    Snow

  • Wednesday

    Wednesday: Snow, mainly before 9am.  High near 17. Wind chill values as low as zero. East wind 5 to 10 mph becoming light and variable  in the afternoon.  Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 17 °F

    Snow then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of snow after 2am.  Increasing clouds, with a low around 11. Light and variable wind becoming southwest 5 to 7 mph in the evening.  Chance of precipitation is 50%.

    Low: 11 °F

    Mostly Cloudy
    then Chance
    Snow

  • Christmas Day

    Christmas Day: A chance of snow, mainly before 2pm.  Mostly cloudy, with a high near 20. Wind chill values as low as -7. Blustery, with a southwest wind 7 to 12 mph becoming northwest 16 to 21 mph in the afternoon.  Chance of precipitation is 50%.

    High: 20 °F

    Chance Snow
    and Blustery

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -2. Windy, with a northwest wind 28 to 31 mph.

    Low: -2 °F

    Partly Cloudy
    and Windy

  • Friday

    Friday: Sunny and cold, with a high near 6. Blustery, with a north wind 19 to 24 mph decreasing to 10 to 15 mph in the afternoon.

    High: 6 °F

    Sunny and
    Blustery then
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around -3. North wind 7 to 10 mph.

    Low: -3 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 11.

    High: 11 °F

    Partly Sunny

Detailed Forecast

Overnight
Snow. Low around 14. Wind chill values as low as zero. East wind 11 to 13 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 3 to 5 inches possible.
Wednesday
Snow, mainly before 9am. High near 17. Wind chill values as low as zero. East wind 5 to 10 mph becoming light and variable in the afternoon. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Wednesday Night
A chance of snow after 2am. Increasing clouds, with a low around 11. Light and variable wind becoming southwest 5 to 7 mph in the evening. Chance of precipitation is 50%.
Christmas Day
A chance of snow, mainly before 2pm. Mostly cloudy, with a high near 20. Wind chill values as low as -7. Blustery, with a southwest wind 7 to 12 mph becoming northwest 16 to 21 mph in the afternoon. Chance of precipitation is 50%.
Thursday Night
Partly cloudy, with a low around -2. Windy, with a northwest wind 28 to 31 mph.
Friday
Sunny and cold, with a high near 6. Blustery, with a north wind 19 to 24 mph decreasing to 10 to 15 mph in the afternoon.
Friday Night
Partly cloudy, with a low around -3. North wind 7 to 10 mph.
Saturday
Partly sunny, with a high near 11.
Saturday Night
Partly cloudy, with a low around 3.
Sunday
Mostly sunny, with a high near 21.
Sunday Night
Snow. Low around 12. Chance of precipitation is 80%.
Monday
Snow likely. Mostly cloudy, with a high near 20. Chance of precipitation is 70%.
Monday Night
A chance of snow. Mostly cloudy, with a low around 8. Breezy. Chance of precipitation is 40%.
Tuesday
Mostly cloudy, with a high near 14.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Greenville Junction ME
 45.51°N 69.75°W (Elev. 2034 ft)
1:34 am EST Dec 24, 2025
3am EST Dec 24, 2025-6pm EST Dec 30, 2025
 
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Additional Resources

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