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St. John Valley weather for Dec. 19-25, 2018

High pressure will build across the St. John Valley Wednesday and Thursday. A low-pressure system will move up the Appalachians and bring freezing rain Friday morning, changing to all rain Friday afternoon and evening. Rain continues Saturday before tapering to showers Friday evening and rain/snow showers overnight into Sunday. High pressure will build into the Valley through Christmas Day.

Daily Weather Summary

Wednesday, Dec. 19: High: low to-mid-20s. Low: lower 10s.
Partly cloudy. West winds 5 to 10 mph. Wednesday night, partly cloudy with west winds 0 to 5 mph.

Thursday, Dec. 20: High: low 30s. Low: lower 20s.
Partly cloudy/sunny with south/southwest winds near calm. Thursday night, increasing clouds with a 30 percent chance for precipitation. Around one-hundredth of an inch possible.

Friday, Dec. 21: High: low 40s. Low: near 40.
Cloudy with a near 100 percent chance for freezing rain changing to all rain in the afternoon. Between one-half and three-quarters of an inch precipitation possible. Less than one-tenth inch ice accumulation expected with a tenth of an inch or so in the Allagash and western portions of The County. Southeast winds increasing to near 10 mph in the afternoon. Friday night, cloudy with a near 100 percent chance for rain. Southeast winds 8 to 14 mph.

Saturday, Dec. 22: High: mid-40s. Low: low 20s.
Cloudy with a 50 percent chance for rain tapering to showers in the evening. South winds to 7 mph. Saturday night, cloudy with a 40 percent chance for rain. West winds 8 to 14 mph.

Sunday, Dec. 23: High: mid-20s. Low: near 10.
Mostly cloudy with northwest winds 8 to 14 mph. Sunday night, partly cloudy with northwest winds to 7 mph.

Monday, Dec. 24 High: near 20. Low: near 0.
Partly cloudy/sunny with northwest winds 0 to 7 mph. Monday night, partly cloudy and cold. Northwest winds 0 to 7 mph.

Tuesday, Dec. 25: High: near 20. Low: near 5 above.
Partly cloudy and cold. Northwest winds to 7 mph. Tuesday night, partly cloudy. Northwest winds 0 to 7 mph.

Note: Computer model precision diminishes the further into the week the forecast projects. Check the Fiddlehead Focus for weather updates with more current information.

The Week Ahead is the work of UMFK Professor Joseph E. Becker based on personal weather station data, various computer forecast models, and information that the National Weather Service, NOAA, and other weather resources provide.

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