St. John Valley weather for June 19-25, 2019
A stalled frontal boundary will creep ever so slowly closer to the Valley today and tonight with showers and possibly some afternoon/evening thunderstorms today. Showers continue tonight into Thursday morning. Another low pressure tracking northeast from the Mid-Atlantic will cross the Gulf of Maine into the Maritimes Thursday afternoon into early Friday morning with a steadier rainfall expected across the SJV as the two lows phase together.
Rain tapers to showers Friday with skies becoming partly cloudy later Friday as high pressure near James Bay in Canada builds southeast into the region. Low pressure moves into the Maritimes with wrap-around showers persisting Saturday into early Sunday. High pressure near James Bay builds southeast into the Valley with skies becoming partly cloudy Sunday and Monday. A warm front lifts across the area Tuesday into Wednesday with a chance for showers Monday evening and Tuesday.
Daily Weather Summary
Wednesday, June 19
Increasing clouds this morning then overcast this afternoon with a 100 percent chance for showers and possibly some afternoon/evening thunderstorms. Rainfall totals between 1/10 and 1/4 inch possible. High in the mid-70s with northeast winds becoming southerly 0 to 5 mph. Tonight, cloudy with a 100 percent chance for showers with between 1/10 and 1/4 inch rainfall expected. Low in the middle 50s with north/northeast winds 0 to 5 mph becoming north/northwest near calm after midnight.
Thursday, June 20
Cloudy with a 60 percent chance for showers in the morning then a steadier rain in the afternoon/evening. Rainfall totals between 1/4 and 1/2 inch expected. High near 70 with east/northeast winds near calm. Thursday night, mostly cloudy with a 60 percent chance for rain with between 1/4 and 1/2 inch possible. Low in the lower 50s with north winds 0 to 5 mph.
Friday, June 21 / Summer Solstice at 11:54 AM ET
Partly sunny in the morning then partly cloudy in the afternoon with a 20 percent chance for showers with between 1/10 and 1/4 inch rainfall anticipated. High in the upper 60s with north winds 5 to 10 mph. Friday night, partly cloudy with a 60% chance for showers. Low in the lower 50s with northwest winds 0 to 7 mph.
Saturday, June 22
Partly sunny with a 60 percent chance for showers. High in the middle 60s with north winds 8 to 14 mph. Saturday night, becoming partly cloudy with a 30 percent chance for showers. Low in the lower 50s with north winds 0 to 7 mph.
Sunday, June 23
Partly cloudy with a high in the lower 70s. Slight chance for showers, mainly in the morning. North winds 8 to 14 mph. Sunday night, partly cloudy with a low in the lower 50s. Slight chance for precipitation. Northwest winds 0 to 7 mph.
Monday, June 24
Partly cloudy to mostly clear with a high in the middle 70s. Slight chance for mainly afternoon/evening showers. North winds 0 to 7 mph. Monday night, partly cloudy with a 30 percent chance for showers. Low in the mid-50s with light southeast winds.
Tuesday, June 25
Partly sunny to mostly cloudy with a 50 percent chance for showers. High in the mid-70s with south winds 0 to 7 mph. Tuesday night, mostly cloudy with a 60 percent chance for showers. Low in the mid-to-upper 50s with light south winds.
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.