Wednesday-Friday
High pressure well south of the region will move into the Atlantic today as a clipper system approaches from the Great Lakes. Mostly clear skies this morning will become overcast by evening as the clipper low tracks from New York state to near the coast of Nova Scotia tonight. Showers are expected to overspread the Valley this evening and continue overnight with snow mixing in overnight.
The low will deepen as it moves east with northwest winds developing by early Thursday. Wind gusts of 35 to 40 mph are possible from late Wednesday night into Thursday evening, with the strongest gusts at higher elevations. Some snow accumulation is possible with 1 inch or less snowfall accumulation expected. Highs peak in the mid-40s with nighttime temperatures in the lower 30s.
Thursday will feature rain and snow early then a chance of snow showers over the course of the morning, with precipitation tapering in the afternoon. Northwest winds 10 to 15 mph with gusts up to 35 mph are possible across the St. John Valley. Highs will top out in the upper 30s. Thursday night will be cold with overnight lows in the lower 20s under partly cloudy skies.
Partly sunny skies Friday morning will become mostly cloudy by evening as low pressure approaches from Ontario and lifts a weak warm front across the Valley. Snow is likely overnight into early Saturday before changing to all rain as warmer air moves into the region. Friday’s high will reach the middle 30s with temperatures Friday night in the lower 30s across most of northern Maine.
Saturday-Tuesday
Rain will taper off on Saturday as drier air moves in, allowing some late-day sunshine. Cooler air will follow, and Saturday night will be clear to partly cloudy and cold, with lows in the lower 20s.
Another storm will approach from the Midwest on Sunday, spreading rain into the area by afternoon. Northern and western Maine could see a rain–snow mix at first. The system will move through quickly Sunday evening, bringing a few hours of steady rain before drying out late at night.
Monday will be partly sunny and mainly dry as the drier air settles in. Fair weather continues into Veteran’s Day, then another fast-moving Alberta clipper could bring light precipitation by Wednesday.
Daily Forecast Outlook
Today: Mostly sunny this morning, then mostly cloudy with a chance of rain this afternoon. Highs in the mid-40s. West winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50 percent.
Tonight: Snow, rain. Snow accumulation up to 1 inch. Cold with lows in the lower 30s. South winds around 5 mph, increasing to north 10 to 15 mph with gusts up to 30 mph after midnight. Chance of precipitation 90 percent.
Thursday: Mostly cloudy with a chance of snow and rain showers in the morning, then partly sunny with a slight chance of snow showers in the afternoon. Little or no snow accumulation. Highs in the upper 30s. Temperature falling into the mid-30s in the afternoon. Northwest winds 10 to 15 mph with gusts up to 35 mph. Chance of precipitation 50 percent.
Thursday Night: Partly cloudy. Colder with lows in the lower 20s. West winds 10 to 15 mph with gusts up to 25 mph.
Friday: Partly sunny in the morning, then mostly cloudy with a chance of snow in the afternoon. Little or no snow accumulation. Highs in the mid 30s. West winds 5 to 10 mph, becoming southwest in the afternoon. Chance of snow 40 percent.
Friday Night: Snow likely. Rain after midnight. Little or no snow accumulation. Cold with lows in the upper 20s. Temperature rising into the lower 30s after midnight. Chance of precipitation 90 percent.
Saturday: Mostly cloudy. Rain likely in the morning, then a chance of rain showers in the afternoon. Not as cool with highs in the mid-40s. Temperature falling into the lower 40s in the afternoon. Chance of rain 70 percent.
Saturday Night: A chance of rain showers in the evening. Mostly cloudy. Cold with lows in the lower 20s. Chance of rain 40 percent.
Sunday: Partly sunny in the morning, then mostly cloudy with a chance of rain and snow in the afternoon. Highs in the upper 30s. Chance of precipitation 50 percent.
Sunday Night: A chance of rain in the evening. Snow likely. Cold. Near steady temperature around 30. Chance of precipitation 70 percent.
Monday: Mostly cloudy with a chance of rain and snow showers. Highs around 40. Temperature falling into the lower 30s in the afternoon. Chance of precipitation 50 percent.
Monday Night: Mostly cloudy with a 50 percent chance of snow showers. Cold with lows around 20.
Veterans Day: Mostly cloudy with a 40 percent chance of snow showers. Cold with highs in the lower 30s.
Tuesday Night: Mostly cloudy with a 20 percent chance of snow showers. Lows in the lower 20s.
Weather Notice: The weekly forecast is by UMFK Professor Joseph E. Becker based on available computer models and data and may not reflect current conditions or later forecast updates. Check The County.me or the National Weather Service Caribou, Maine for the most recent weather information for the Saint John Valley.
