St. John Valley weather for May 1-7, 2019

Upper-level ridging will continue across the SJV until the end of the week. High pressure to the northwest centered near James Bay and a ridge centered to the southeast in the Atlantic will continue to bring mostly clear to partly cloudy skies today. Clouds will increase Wednesday afternoon and evening as a low-pressure system rides over the ridge to the southeast and tracks across southern New England this afternoon and evening. High pressure will continue to dominate northern Maine’s weather Thursday into early Friday before clouds increase ahead of an approaching low-pressure system that will bring rain to the region Friday evening into early Saturday.

Low pressure will cross southern Maine Friday night into Saturday, pulling an occluded front across the region early Saturday. Rain will taper to showers Saturday morning before ending in the afternoon. High pressure near the Great Lakes will build eastward Saturday evening into Sunday. A cold front will approach Monday, bringing increased clouds and a chance for rain showers Monday afternoon through Tuesday; however, models are uncertain for timing of the weather systems early next week. Temperatures are expected to be slightly below normal with near normal precipitation through the middle of next week.

Daily Weather Summary

Wednesday, May 1
Mostly clear in the morning then becoming partly cloudy in the afternoon. High in the mid-40s with northwest winds 5 to 10 mph with possible maximum gusts 20 to 25 mph this afternoon. Overnight, partly to mostly cloudy this evening then becoming partly cloudy after midnight. Lows near 30. Northwest winds around 0 to 5 mph becoming northerly early Thursday.

Thursday, May 2
Partly cloudy to mostly clear. High in the low 50s with north winds around 5 mph. Tomorrow night, partly cloudy with lows in the low 30s and a slight chance for precipitation. East/northeast winds 0 to 5 mph.

Friday, May 3
Partly sunny early then mostly cloudy in the afternoon with a 60 percent chance for rain in the evening. High in the low 50s with south/southeast winds 5 to 10 mph. Friday night, cloudy with a 70 percent chance for rain with precipitation totals estimated in the 1/10 to 1/4 inch range. Low in the mid-to-upper 30s with light south winds.

Saturday, May 4
Cloudy with a 30 percent chance for showers tapering off in the afternoon. High in the mid-50s with light northwest winds. Mostly cloudy in the afternoon/evening then becoming partly cloudy overnight. Low in the lower 30s with light north winds. Slight chance of precipitation overnight.

Sunday, May 5
Partly cloudy with a high in the upper 50s with a slight chance for precipitation. Sunday night, partly cloudy with a slight chance for showers. Low in the mid-to-upper 30s. Light southeast winds.

Monday, May 6
Partly cloudy/partly sunny with a high in the low 60s. 40 percent chance for showers. Light south winds. Monday night, partly cloudy with a 40 percent chance for showers. Low in the mid-to-upper 30s. Light west winds.

Tuesday, May 7
Partly sunny with a 40 percent chance for showers. High in the lower-to-mid-50s. Light northwest winds. Tuesday night, partly/mostly cloudy with a 40 percent chance for showers. Low in the mid-30s with light northwest 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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