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St. John Valley weather for May 29-June 4, 2019

ST. JOHN VALLEY, Maine — Low pressure will track into the Atlantic southeast of Cape Cod Wednesday morning, but will have little impact on northern Maine’s weather as high pressure east of Nova Scotia and a weak ridge to the southwest controls the Valley’s weather. Clouds increase Wednesday night as a cold front moves down from the northwest producing a chance for rain tonight tapering to showers Thursday. Showers continue as the cold front slowly moves through Thursday into Friday. High pressure brings decreased clouds and reduced chances for showers Friday.

A closed upper-low will spin over eastern Canada/northern New England through about the middle of next week keeping a chance for showers in the forecast daily for the period. A weak cold front moves through Saturday into Sunday with high pressure nosing in some early next week; however, moisture circulating around the upper-low will persist for the period. Anomalously cool air aloft will translate to cooler than normal temperatures for the region through midweek.

Daily Weather Summary

Wednesday, May 29
Mostly clear early then partly cloudy in the afternoon with a high in the lower 60s and a slight chance for showers. South winds 5 to 10 mph with gusts in the 10 to 15 mph range possible this afternoon. Overnight, increasing clouds with a 40 percent chance for showers late. Less than 1/10 inch rainfall expected. Low in the upper 40s with south winds 5 to 10 mph. Patchy fog possible Thursday morning.

Thursday, May 30
Cloudy with a 60 percent chance for showers with between 1/10 and 1/4 inch precipitation possible. High in the low 60s with south winds 5 to 10 mph. Thursday night, mostly cloudy with a 70 percent chance for showers with between 1/4 and 1/2 inch rainfall possible. Low in the lower 40s with south/southwest winds 0 to 5 mph. Areas of fog possible overnight.

Friday, May 31
Partly sunny with a 50 percent chance for showers with little accumulation expected. High in the mid-50s with west/northwest winds 10 to 15 mph. Friday night, partly cloudy with a 30 percent chance for showers. Low in the lower 40s with west winds 0 to 7 mph.

Saturday, June 1
Partly sunny/partly cloudy with a high near 60. 30 percent chance for showers with light west winds. Saturday night, partly cloudy with a 30 percent chance for showers. Low in the lower 40s. Light west winds.

Sunday, June 2
Partly cloudy/sunny with a high near 60 and a 40 percent chance for showers. Light southwest winds. Sunday night, mostly cloudy with a 50 percent chance for showers. Low in the mid-40s with light northeast winds.

Monday, June 3
Partly sunny with a 50 percent chance for showers and a high near 60. Light northeast winds. Monday night, mostly cloudy with a 30 percent chance for showers. Low in the lower 40s with light north winds.

Tuesday, June 4
Partly sunny with a high near 60. Chance for showers 50 percent. Light north winds. Tuesday night, mostly cloudy with a 40 percent chance for showers. Low in the mid-40s with light southwest 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.

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