Wednesday – Friday
Low pressure that brought snow to the region yesterday will track east south of Nova Scotia today. Partly cloudy to partly sunny skies build across the Valley today with mostly dry conditions expected. Tonight, mostly cloudy skies overspread the SJV as an Arctic cold front approaches bringing increasing chances of snow showers after midnight.
The front looks to move through Thursday morning with a line of heavy snow showers possible along the frontal boundary. In general, most areas are looking at around 1-inch snowfall. Additionally, northwest winds will increase following frontal passage with gusts to 25 mph picking up new fallen snow and reducing visibility at times, particularly around agricultural fields.
Very cold Arctic air will rapidly move into the Valley behind the front with temperatures falling from the 30s Thursday morning to the single digits Thursday afternoon/evening producing flash freezing of precipitation on area roadways. Hazardous travel conditions, with visibility rapidly dropping to near zero, sudden strong wind gusts, and suddenly slick surfaces, are possible Thursday.
Thursday night, northwest winds remain brisk with gusts in the 20-25 mph range. With temperatures expected to drop into the 0 to -5°F range across northern Maine, wind chill values could fall into the -25 to -30°F range in the North Woods and -15 to -25°F in other areas of northern Maine, with blowing snow remaining a hazard into the overnight hours.
Arctic high pressure will slide across the Valley Friday with very cold conditions under mostly sunny skies in the morning. Highs in the low-to-mid-10s are expected for most locations with wind chill values around 0°F through the day. Skies become partly sunny by afternoon as a disturbance approaches with a slight chance of snow showers Friday afternoon/evening. Partly cloudy skies are expected Friday night with overnight lows near 0°F in most locations.
Saturday – Tuesday
Arctic high pressure will move east Saturday with another Arctic cold front approaching later in the day and moving through overnight into Sunday with a slight chance of snow showers for the SJV. A reinforcing shot of Arctic air settles into the Valley later Sunday with partly cloudy and cold conditions Monday and Tuesday.
Highs in the low 20s Saturday and Sunday then the low-to-mid-10s Monday and Tuesday. Overnight lows in the low 10s Saturday night, near 0°F Sunday night, and falling into the 0 to 5 below range Monday night and 0 to 5 above Tuesday night.
Daily Forecast Outlook
Today: Partly sunny. Cold with highs in the mid-20s. Northwest winds around 5 mph, becoming west this afternoon.
Tonight: Mostly cloudy. A slight chance of snow showers after midnight. Cold with lows around 16. Temperature rising into the lower 20s after midnight. South winds 5 to 10 mph. Chance of snow 20 percent.
Thursday: Mostly cloudy in the morning, then becoming partly sunny. A 50 percent chance of snow showers. Snow accumulation up to 1 inch possible. Cold with highs in the upper 20s. Temperature falling to around 11 in the afternoon. Southwest winds 10 to 15 mph, becoming west in the afternoon. Gusts up to 30 mph.
Thursday Night: Partly cloudy. A chance of snow showers in the evening. Little or no snow accumulation. Much colder with lows around 6 below. West winds 10 to 15 mph with gusts up to 30 mph. Chance of snow 50 percent. Wind chill values as low as 28 below.
Friday: Sunny in the morning, then becoming partly sunny. Much colder with highs around 11. West winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 28 below.
Friday Night: Mostly cloudy in the evening, then becoming partly cloudy. Cold with lows around zero.
Saturday: Partly sunny in the morning, then becoming mostly cloudy. Not as cold with highs in the lower 20s.
Saturday Night: Mostly cloudy. Cold with lows around 10 above.
Sunday: Mostly sunny. Cold with highs around 20. Temperature falling to around 10 above in the afternoon.
Sunday Night: Partly cloudy. Colder with lows around zero.
Monday: Mostly sunny. Cold with highs around 10 above. Temperature falling to around 10 above in the afternoon.
Monday Night: Partly cloudy. Cold with lows 5 below to zero.
Tuesday: Mostly sunny. Cold with highs around 15.
Tuesday Night: Mostly cloudy with a chance of snow. Cold with lows 0 to 5 above. Chance of snow 30 percent.
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.
