Apex Weather

St. John Valley weather for Feb. 12-18, 2020

Short-Term Outlook: Wednesday – Friday
1023-millibar high pressure centered over southeastern Ohio/West Virginia Wednesday morning will bring mostly clear skies to the Valley through the early afternoon.

High pressure moves east into the Atlantic this afternoon and evening with increasing clouds across the SJV as low pressure tracks across southern New England into offshore waters Wednesday night and Thursday. Meanwhile a strong Arctic cold front will push into the region from the northwest tomorrow with mostly cloudy skies tonight becoming cloudy Thursday with a chance for some light snow across the region, mainly early Thursday into the afternoon hours.

Much of northern Maine will be looking at snowfall totals in the 1-2 inch range from Thursday’s system. Higher snowfall will be found towards the coast for anyone traveling down state. High temperatures will be earlier in the day Thursday with Arctic air moving into the Valley in the afternoon pushing overnight temperatures well below zero under partly cloudy skies as high pressure spreading from the Great Lakes down into the Midwest builds eastwards into New England. Friday will feature partly cloudy skies and cold temperatures with temperatures struggling to around 0 for the high in Fort Kent. Friday night will see mostly clear skies and regional temperature plummeting into the -15 to -20 range with some locally colder readings possible.

Wednesday, February 12
Mostly clear with a high in the low 30s and west winds 10 to 15 mph becoming southwest in the afternoon near 10 mph. Wind chill values in the mid-10s at times.

Overnight, mostly cloudy early with skies becoming overcast after midnight with a 60% chance for snow with little accumulation anticipated. Low in the upper 10s with southwest winds around 10 mph. Minimum wind chill values in the 5 to 10 above range.

Thursday, February 13
Cloudy with a 70% chance for snow with around 1-inch accumulation possible. Liquid equivalent precipitation totals in 1/100 to 1/10-inch range expected. High in the low 20s with north winds 5 to 10 mph. Minimum wind chill values 0 to 10 above.

Thursday night, decreasing clouds with a 20% chance for snow showers early tapering off before midnight. Low around -10°F. North winds near 5 mph. Minimum wind chill values 15 to 25 below zero overnight.

Friday, February 14 / Valentine’s Day
Partly cloudy and very cold with a high near 0°F. Northwest winds near 10 mph and minimum wind chill values around 20 t0 25 below zero.

Friday night, mostly clear and quite cold with lows in the -15 to -20°F range with some colder temperatures possible. Northwest winds in the 0 to 7 mph range.

Further Ahead: Saturday – Tuesday
Arctic air settles in through Saturday night. Low pressure and an associated cold front approach from the Great Lakes Saturday night with increasing clouds and a chance for snow along with moderating temperatures for the Valley Sunday. High pressure brings decreasing clouds Sunday night and Monday with another cold front bringing a chance for snow to the Valley Tuesday.

Medium-Range Highs/Lows
Sat. Feb. 15: low 10s / 5 to 10 above
Sun. Feb. 16: low 30s / low 10s
Mon. Feb. 17: low 20s / 0 to 5 below
Tue. Feb. 18: low 20s / low 10s

Long-Range Trends Wed. Feb. 19 – Tue. Feb. 25
Slightly above normal temperatures and slightly above normal precipitation

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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