Apex Weather

St. John Valley weather for Sept. 8-14, 2021

3-Day Outlook: Wednesday – Friday

High pressure will drift east today as a low pressure area and associated fronts moves towards the Valley from the west. 

Clouds will increase today with showers overspreading the entire region this afternoon. Showers continue into the evening hours with a chance for steady rain and thunderstorms after midnight as the atmosphere destabilizes with the approach of the cold front. Rain and scattered thunderstorms are expected Thursday afternoon continuing into the overnight hours. Scattered shower activity is expected Friday behind the front as the associated upper-level trough moves across the SJV with precipitation ending early Saturday morning.

Today & Tonight

Partly cloudy in the morning with partly sunny skies in the afternoon. 10 percent chance for afternoon showers. High around 77 degrees with south winds 10-12 mph gusting to 25 mph in the  afternoon.

Tonight, mostly cloudy in the evening then becoming overcast with rain likely after midnight. 70 percent chance for precipitation with rainfall amounts in the 0.10 to 0.25-inch range. Some patchy fog possible overnight. Low near 61 degrees with south winds 5-10 mph. 

Thursday, Sept. 9

Cloudy with showers likely in the morning then rain with scattered thunderstorms in the afternoon. Rainfall totals between 0.25 and 0.50-inch expected with higher amounts possible in storms. High around 71 degrees with south winds 6-9 mph.

Thursday night, partly cloudy with an 80 percent chance for rain and isolated thunderstorms. Rainfall totals around 0.10-inch expected. Low near 55 degrees with south-southwest winds becoming west-northwest in the 0-5 mph range. 

Friday, Sept. 10

Partly sunny with a 40 percent chance for showers. Rainfall amounts in the 0.01- to 0.09-inch range expected. High around 67 degrees with northwest winds 6-8 mph.

Friday night, partly cloudy with a 20 percent chance for showers. Low near 48 degrees with west winds 0-7 mph. 

Days 4 – 7: Saturday – Tuesday

High pressure brings partly cloudy skies Saturday and Saturday night. Another frontal system approaches and crosses the region Sunday with showers expected for Fort Kent and vicinity. High pressure builds in Monday into Tuesday with partly cloudy skies. Another front approaches later Tuesday with showers expected in the afternoon and evening hours.

Saturday, Sept. 11

Partly cloudy with a 10 percent chance for showers. High around 70 degrees with west winds 8-14 mph.

Saturday night, partly cloudy with a 50 percent chance for showers. Low near 54 degrees with southwest winds 8-14 mph. 

Sunday, Sept. 12

Partly sunny with a 50 percent chance for showers. High around 71 degrees with west winds 8-14 mph.

Sunday night, partly cloudy with a 30 percent chance for showers. Low near 45 degrees with northwest winds 0-7 mph. 

Monday, Sept. 13

Partly cloudy with a 10 percent chance for showers. High around 63 degrees with northwest winds 8-14 mph.

Monday night, partly cloudy with a 20 percent chance for showers. Low near 38 degrees with northwest winds 0-7 mph. 

Tuesday, Sept. 14

Partly cloudy with a 40 percent chance for showers, mainly in the afternoon. High around 64 degrees with southwest winds 0-7 mph.

Tuesday night, mostly cloudy with a 50 percent chance for showers. Low near 50 degrees with south winds 5-10 mph. 

8 – 14 Day Trends: Wednesday, Sept. 15 –  Tuesday, Sept. 21
Near 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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