Apex Weather

St. John Valley Weather for June 9-15, 2021

Short-Term Outlook: Wednesday –  Friday

High pressure is building down from James Bay in Canada today with mostly sunny skies and cooler conditions. Mostly clear skies tonight will allow temperatures to fall into the mid-40s for most of the SJV.

Thursday will bring mostly sunny skies, cool temperatures and breezy north winds thanks to a weak low sliding by to the northeast. Winds diminish Thursday night with temperatures falling into the lower 40s west and mid-40s east–some readings in the 30s are possible around Estcourt Station in the far northwest.

Low pressure will drop down from the northwest Friday with a slight chance for afternoon showers. This system will be a quick mover with high pressure ridging back in Friday night with mostly clear skies across northern Maine.

Today & Tonight

Mostly sunny with a high near 74 and northwest winds 10 to 15 mph.

Wednesday night, partly cloudy early then mostly clear with a low near 45. Northwest winds 5 to 10 mph. 

Thursday, June 10

Mostly sunny and breezy with a 5 percent chance for showers. High around 64 with north winds 10 to 15 mph gusting to around 25 mph.

Thursday night, partly cloudy with a 10 percent chance for showers. Low around 41 with southwest winds 0 to 5 mph. 

Friday, June 11

Partly cloudy with a 20 percent chance for isolated showers in the afternoon. High around 69 with west winds 0 to 7 mph.

Friday night, partly cloudy early then mostly clear with a 10 percent chance for isolated showers in the evening. Low near 43 with south winds 0 to 7 mph.

Medium-Range Outlook: Saturday – Tuesday  

High pressure will bring mostly sunny skies Saturday and mostly clear skies Saturday night with a slight chance for precipitation. 

Sunday begins sunny with clouds increasing in the afternoon as a deep upper-level trough of low pressure moves into the region bringing increasing cloudiness and showers to the Valley Monday and Tuesday as the system slowly moves east through the midweek period.

Saturday, June 12

Mostly sunny with a 10 percent chance for showers. High around 74 with northwest winds 0 to 7 mph.

Saturday night, partly cloudy with a low around 45. 10 percent chance for showers. Northwest winds 0 to 7 mph.

Sunday, June 13

Partly cloudy with a 20 percent chance for afternoon showers. High near 74 with west winds 0 to 7 mph.

Sunday night, mostly cloudy with a 50 percent chance for showers. Low around 51 with south winds 0 to 7 mph.

Monday, June 14 / Flag Day

Partly cloudy in the morning then mostly cloudy in the afternoon with a 60 percent chance for showers. High around 71 with south winds 8 to 14 mph.

Monday night, partly cloudy with a 60 percent chance for showers. Low around 52 with south winds 0 to 7 mph.

Tuesday, June 15

Mostly cloudy to overcast with a 50 percent chance for showers. High near 69 with northwest winds 0 to 7 mph.

Tuesday night, partly cloudy with a 40 percent chance for showers. Low around 48 degrees with northwest winds 0 to 7 mph.

Long-Range Trends: Wed. June 16 –  Tue. June 22
Below normal temperatures   / Above normal precipitation

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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