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° N Lon: 69.55° W Elev: 1394 ft.

14°F

-10°C

Humidity 88%
Wind Speed E 10 mph
Barometer 29.88 in (1014.9 mb)
Dewpoint 11°F (-12°C)
Visibility NA
Wind Chill1°F (-17°C)
Last update 24 Dec 6:56 am EST
Detailed forecast for

Southern Piscataquis

Today
Mostly cloudy. Snow this morning. Storm total snow accumulation of 4 to 8 inches. Highs in the lower 20s. Northeast winds 5 to 10 mph with gusts up to 20 mph. Chance of snow 90 percent.
Tonight
Partly cloudy in the evening, then mostly cloudy with a chance of snow after midnight. Lows around 10 above. Northwest winds around 5 mph, becoming southwest after midnight. Chance of snow 50 percent.
Christmas Day
Mostly cloudy. Snow likely, mainly in the morning. Snow accumulation around an inch possible. Highs in the upper 20s. Southwest winds around 5 mph, increasing to northwest 10 to 15 mph with gusts up to 25 mph in the afternoon. Chance of snow 70 percent.
Thursday Night
Partly cloudy in the evening, then clearing. Brisk with lows around 2 above. Northwest winds 15 to 25 mph with gusts up to 35 mph.
Friday
Sunny. Highs around 14. Northwest winds 10 to 15 mph. Gusts up to 30 mph in the morning.
Friday Night
Partly cloudy. Cold with lows around zero.
Saturday
Partly sunny. Cold with highs around 20.
Saturday Night
Mostly cloudy in the evening, then clearing. Cold with lows zero to 5 above zero.
Sunday
Mostly sunny. Cold with highs in the upper 20s.
Sunday Night
Snow. Not as cold with lows 10 to 15. Temperature rising into the lower 20s after midnight. Chance of snow 80 percent.
Monday
Snow likely. Cold with highs in the upper 20s. Temperature falling into the lower 20s in the afternoon. Chance of snow 70 percent.
Monday Night
Mostly cloudy. A chance of snow in the evening. Cold with lows around 10 above. Chance of snow 50 percent.
Tuesday
Partly sunny. Cold with highs in the lower 20s.



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124 AM EST Wed Dec 24 2025
 
 

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