Apex Weather

The Week Ahead: St. John Valley weather for Dec. 19 – 26, 2016

Monday, December 19, 2016 – Monday, December 26, 2016

ST. JOHN VALLEY — A strong ridge of high pressure will cross the region Monday with clear skies and bitterly cold temperatures. Temperatures moderate as the ridge moves east Tuesday with increasing clouds as an area of low pressure and an associated warm front in Canada approaches with a chance for snow showers Wednesday. Low pressure near the Great Lakes heads towards the region Thursday with overcast skies and a chance for steady snow Thursday evening into Friday morning. Skies remain mostly cloudy Friday through Sunday as a cold front slowly crosses the region. A low pressure system moves eastwards from the Midwest bringing a chance for snow to the Valley Monday.

Daily Weather Summary

Monday, December 19 

High: near 1°
Low: near -17°

Mostly clear and very cold. Northwest winds become westerly 0-5 mph. Clear and bitterly cold overnight with south winds near calm. Wind chills values around -20° to -25° at times.

Tuesday, December 20

High: low 20s
Low: mid-10s

Partly cloudy skies in the morning become partly sunny in the afternoon/evening. Becoming mostly cloudy overnight with a 20 percent chance for snow showers. South winds around 10 mph.

Wednesday, December 21 / Winter Solstice at 5:44 am EST

High: upper 20s to near 30°
Low: mid-10s

Mostly cloudy and cold with a 20 percent chance for snow showers increasing to 30 percent overnight. Southwest winds in the morning around 10 mph become westerly 10-15 mph.

Thursday, December 22

High: mid-20s
Low: low 20s

Overcast skies with a 70 percent chance for snow, especially in the afternoon and evening. Overnight, overcast with a 70 percent chance for snow. Accumulations 3-5 inches +/- depending on low pressure intensity and track. Light southwest winds early become southerly. Breezy north wind overnight.

Friday, December 23

High: mid-20s
Low: mid-10s

Snow early tapering to snow showers with a 40 percent chance for precipitation diminishing to a 20 percent chance for snow showers overnight. Light northwest wind becomes southwesterly overnight.

Saturday, December 24 / Christmas Eve

High: upper 20s
Low: upper 10s

Mostly cloudy with a 20 percent chance for snow showers. Southwest wind 8-14 mph.

Sunday, December 25 / Christmas

High: mid-20s
Low: around 10°

Mostly cloudy with a 30 percent chance for snow showers. Northwest wind 10-15 mph diminishing to 5-10 mph in the evening.

Monday, December 26 / Boxing Day

High: mid-10s
Low: low 10s

Increasing clouds with a chance for snow in the morning and afternoon tapering to snow showers overnight. 5-7 inches +/- possible depending on low pressure track and intensity. Northeast winds 5-10 mph become westerly 5-10 mph.

Note: Computer model precision diminishes the further into the week the forecast projects. Check the Fiddlehead Focus Facebook page 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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