St. John Valley Weather for Feb. 26-March 3, 2020
Short-Term Outlook: Wednesday – Friday
High pressure west of the James Bay region in Canada will build into the region today with mostly clear to partly cloudy skies this morning followed by increasing clouds in the afternoon.
Low pressure will move towards the Northeast from a low pressure over the Ohio Valley/Pennsylvania region this evening with the primary low tracking into Québec tomorrow with a secondary triple-point low moving across southern New England to the Downeast coastal region.
Snow is expected to overspread northern Maine early Thursday and continue through the day into the overnight hours before tapering to snow showers early Friday as the secondary low moves northeast towards the Gaspé.
Based on current forecast model data, all of northern Maine will be in the 8- to 12-inch range for snowfall with Fort Kent receiving approximately 10 to 11 inches. In addition, east winds will pick up Thursday morning and create areas of blowing snow and possible white-out conditions at times making travel difficult and dangerous Thursday. However, mushers in the 2020 Can-Am Dogsled Race will have plenty of fresh snow on the trails for this weekend’s competition.
Today and Tonight
Mostly clear to partly cloudy in the morning then increasing clouds in the afternoon. High in the middle 30s with north winds 0 to 5 mph.
Wednesday night, cloudy with a 30 percent chance for snow after midnight with little accumulation before 7 AM. Low in the mid-20s with winds becoming east and increasing to 5 to 10 mph after midnight. Wind chill values drop into the 10s.
Thursday, February 27 / Winter Storm Warning 3 AM Thursday through 5 AM Friday
Cloudy with a 100 percent chance for snow. Snowfall totals in the 8- to 12-inch range with locally higher totals possible in some locations (precipitation totals near 1/2 inch). High in the middle 20s with east winds 15 to 20 mph and gusting to 25-35 mph in Fort Kent and Frenchville. Areas of blowing snow possible in the afternoon and evening. Wind chill values in the low 10s.
Thursday night, cloudy with an 100 percent chance for snow tapering to snow showers after midnight (precipitation around 0.20 inch). Low in the upper 10s with east winds 10 to 20 mph before midnight then dropping to around 5 mph after midnight.
Friday, February 28
Cloudy with a 50 percent chance for snow showers with around 0.05 inch precipitation over the course of the day. High in the middle 20s with southwest winds 5 to 10 mph.
Friday night, cloudy with a 30 percent chance for snow showers. Low near 10 degrees with southwest winds 0 to 7 mph.
Further Ahead: Saturday – Tuesday
The upper-low associated with the winter storm will move east towards the Maritimes Saturday with decreasing chances for snow showers on the first day of the 2020 Can-Am. The upper low continues to drift eastwards in the Maritimes Sunday with mostly cloudy skies across the Valley. High pressure over the Great Lakes builds into New England Sunday night and Monday with partly sunny skies developing. Low pressure near the Great Lakes Tuesday lifts a warm front towards the Valley with partly sunny skies giving way to mostly cloudy conditions and a rain/snow mix by Tuesday afternoon.
Sat. Feb. 29: mid-20s / 5 to 10 above
Sun. Mar. 1: upper 20s / low 10s
Mon. Mar. 2: low 30s / low 10s
Tue. Mar. 3: mid-30s / upper 20s
Long-Range Trends Wed. Mar. 4 – Tue. Mar. 10
Above normal temperatures and 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.