Wednesday, May 6-Friday, May 8
A cold front will stall out over Maine today into tonight then move east into the Maritimes Thursday. Surface high pressure will build into the region; however, an upper-level trough to the west will move across the area Thursday into Friday, keeping some instability and cloudiness over the Valley. A chance of showers Wednesday morning gives way to steadier rain as the day progresses with a 100 percent chance of precipitation with rainfall totals in the 0.50 to 0.75-inch range. High in the middle-to-upper 40s with light southwest wind in the morning becoming variable in the afternoon.
Wednesday night, mostly cloudy skies remain over the St. John Valley with calm wind and a 60 percent chance of rain overnight with precipitation totals in the 1/4 to 1/2-inch range across the Valley. Low in the mid-to-upper 30s.
As the cold front moves east Thursday, rain tapers to showers, mainly in the afternoon with partly sunny skies for Valley communities. There is a 60 percent chance of precipitation with less than 1/10-inch rainfall expected. Highs reach the mid-50s with west wind 5-10 mph. Thursday night, partly cloudy skies overspread the Valley with a slight chance of showers. Lows in the lower-to-middle 30s and west wind 0-5 mph expected.
Mostly sunny skies are expected Friday with a weak disturbance bringing a 30 percent chance of showers in the afternoon with some isolated afternoon thunderstorms also possible. Highs in the low-to-middle 50s expected with northwest wind around 5-6 mph. A 20 percent chance of showers with partly cloudy skies in the evening becoming mostly clear overnight. Low in the middle 30s with light southwest winds.
Saturday, May 9-Tuesday, May 12
Partly sunny skies overspread the region Saturday, with increasing clouds as the day progresses with a system approaching from the Great Lakes region. Some isolated showers are possible by afternoon with highs topping out in the mid-50s. Southwest wind 0-7 mph. Saturday night, a 30 percent chance of showers develops with lows in the upper 30s to near 40 under mostly cloudy skies. South wind 0-7 mph anticipated.
For Sunday, expect partly sunny skies with a 60 percent chance of showers by late afternoon as an area of low pressure moves across the state. Temperatures climb into the upper 50s to near 60 with south wind 8-14 mph. Sunday night, a 50 percent chance of showers with temperatures in the upper 30s to lower 40s and light south wind.
Monday looks partly sunny with a 50 percent chance of showers. Highs in the mid-50s with light west wind. Monday night, partly cloudy skies with a 20 percent chance of showers expected and lows in the middle 30s. Northwest wind 0-7 mph.
For Tuesday, expect a cold front to move east in the Maritimes with high pressure building in from the west. Mostly sunny skies for the Valley with temperatures in the lower-to-middle 50s with light northwest wind. A slight chance of afternoon showers are possible. Tuesday night features partly cloudy skies with light west wind and lows in the mid-30s.
Daily Forecast
Today: Rain. Much cooler. Near steady temperature in the mid-40s. Southwest winds around 5 mph, becoming northwest this afternoon. Chance of rain near 100 percent.
Tonight: Mostly cloudy with a 50 percent chance of rain. Patchy fog. Lows in the mid-30s. Northwest winds around 5 mph.
Thursday: Partly sunny with a 50 percent chance of rain showers. Highs in the mid-50s. West winds 5 to 10 mph.
Thursday Night: Partly cloudy. A chance of rain showers in the evening. Lows in the lower 30s. West winds 5 to 10 mph. Chance of rain 50 percent.
Friday: Mostly sunny with a chance of rain showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 50s. Northwest winds 5 to 10 mph. Chance of rain 40 percent.
Friday Night: Partly cloudy. A slight chance of rain showers and thunderstorms in the evening. Lows in the mid-30s. Chance of rain 20 percent.
Saturday: Partly sunny. Highs in the mid-50s.
Saturday Night: Mostly cloudy. Lows in the upper 30s.
Sunday: Partly sunny. A chance of showers in the morning, then showers likely in the afternoon. Highs in the upper 50s. Chance of rain 60 percent.
Sunday Night: Mostly cloudy with a 50 percent chance of showers. Lows in the upper 30s.
Monday: Partly sunny with a 50 percent chance of showers. Highs in the mid-50s.
Monday Night: Mostly cloudy. A chance of rain showers in the evening. Lows in the mid 30s. Chance of rain 40 percent.
Tuesday: Mostly sunny. Highs in the lower 50s.
Tuesday Night: Partly cloudy. Lows in the middle 30s.
Weather Notice: The weekly forecast, by UMFK Professor Joseph E. Becker, is 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.
