Apex Weather

St. John Valley weather for Oct. 16-22, 2019

ST. JOHN VALLEY, Maine — High pressure centered over southern Maine Wednesday morning will move east of the region as the day progresses. Meanwhile low pressure tracking from the Great Lakes will phase with a strengthening low pressure moving up the Middle Atlantic coast by Thursday morning. The low will track across the Gulf of Maine/Downeast Maine Thursday into Thursday evening then exit into the Canadian Maritimes by Friday morning with rain and wind across the Valley Thursday into Friday. 

Rain will taper to showers Friday as the system moves towards Labrador/Newfoundland over the course of the day Friday. Breezy northwest winds will diminish Saturday with skies becoming partly sunny. High pressure will build into the Valley Sunday and cross the region Monday into Tuesday. Another low pressure system and associated front will cross the region Tuesday bringing another round of rain to the SJV.

Daily Weather Summary

Wednesday, October 16
Partly cloudy with a high in the middle 50s. Southwest winds shift to the southeast winds increasing to around 5 mph in the afternoon. Tonight, increasing clouds with a 60 percent chance for rain after midnight. Low in the lower 40s with winds becoming east/northeast winds and increasing to 10 to 15 mph after midnight.

Thursday, October 17
Cloudy with a 90 percent chance for rain with between 1/2 and 3/4 inch precipitation anticipated. High in the upper 40s with breezy northeast winds 10 to 20 mph with gusts 25 to 35 mph across the SJV. Thursday night, cloudy with an 80 percent chance for rain with between 1/10 and 1/4 inch expected. Low in the lower 40s with north winds falling into the 5 to 10 mph range. Wind chill values fall into the lower 30s overnight.

Friday, October 18
Cloudy with a 60 percent chance for rain tapering to showers with between 1/100 and 1/10 inch expected. High in the upper 40s with northwest winds 10 to 15 mph with gusts 20 to 30 mph possible. Wind chill values in the low-to-mid-30s. Friday night, mostly cloudy with a 20 percent chance for showers. Low in the upper 30s with northwest winds 8 to 14 mph.

Saturday, October 19
Mostly cloudy in the morning then becoming partly sunny in the afternoon. High in the low 50s with northwest winds 0 to 7 mph. Saturday night, partly cloudy with a low in the lower 30s. West winds 0 to 7 mph.

Sunday, October 20
Partly cloudy with a high in the mid-50s. Southwest winds 0 to 7 mph. Sunday night, partly cloudy with a low in the upper 30s. West winds 0 to 7 mph.

Monday, October 21
Partly cloudy with a high in the middle 50s. Northwest winds 0 to 7 mph. Monday night, partly cloudy with a 20 percent chance for rain. Low in the lower 40s with southeast winds 0 to 7 mph.

Tuesday, October 22
Becoming mostly cloudy/overcast with a 60 percent chance for rain. High in the middle 50s with southeast winds 8 to 14 mph. Cloudy with a 50 percent chance for showers. Low in the mid-40s with southerly winds 5 to 10 mph.

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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