Apex Weather

St. John Valley weather for Sept. 22-28, 2021

3-Day Outlook: Wednesday – Friday

High pressure to the east and and trough to the west will place the region in an area of southerly flow today, which will draw increasingly moist air into the region.

Increased cloudiness today with otherwise dry conditions are expected for the SJV. Mostly cloudy skies develop tonight and continue into Thursday with a slight chance for showers tonight and tomorrow. The cold front gradually moves closer Friday with showers becoming more prevalent in the afternoon. Showers and fog are expected Friday night.

Today & Tonight / Autumnal Equinox at 3:21 pm

Partly cloudy with a high around 74 degrees. 10 percent chance for afternoon showers. South winds near 9 mph.

Tonight, mostly cloudy with a 20 percent chance for showers. Patchy fog possible overnight. Rainfall totals less than 0.10-inch expected. Low near 59 degrees with south winds 4-8 mph. 

Thursday, September 23

Mostly cloudy with a 20 percent chance for showers. Rainfall amounts less than 0.10-inch expected. High around 75 degrees with south-southeast winds 5-6 mph.

Thursday night, mostly cloudy with a 30 percent chance for showers. Rainfall amounts less than 0.10-inch expected. Fog possible after midnight. Low near 57 degrees with southeast winds 3-4 mph. 

Friday, September 24

Mostly cloudy with a 50 percent chance for showers. Rainfall totals between 0.01 and 0.09-inch expected. High around 71 degrees with southeast winds 11-13 mph.

Friday night, cloudy with an 80 percent chance for rain. Low near 57 degrees with south winds 0-7 mph. 

Days 4 – 7: Saturday – Tuesday

Showers are expected to transition to a steady rainfall Saturday as the cold front crosses the region. Rain continues Saturday night into Sunday morning before tapering to showers in the afternoon. An area of low pressure is expected to track along the cold front into the Maritimes to the east of the region keeping a chance for showers across the Valley Monday. Partly cloudy to partly sunny skies are expected Tuesday with a chance for afternoon showers developing as a cold front approaches from the west.

Saturday, September 25

Cloudy  rain likely. Chance for precipitation 70 percent. High around 70 degrees with south winds 0-7 mph.

Saturday night, mostly cloudy with a 60 percent chance for rain. Low near 56 degrees with south winds 0-7 mph. 

Sunday, September 26

Mostly cloudy with a 60 percent chance for rain in the morning tapering to showers in the afternoon. High around 68 degrees with south winds 0-7 mph.

Sunday night, partly cloudy with a 40 percent chance for showers. Low near 48 degrees with southwest winds 0-7 mph. 

Monday, September 27

Partly sunny with a 40 percent chance for showers. High around 62 degrees with west winds 8-14 mph.

Monday night, partly cloudy with a 20 percent chance for showers. Low near 45 degrees with west winds 0-7 mph. 

Tuesday, September 28

Partly cloudy in the morning then becoming partly sunny with a 40 percent chance for showers. High around 62 degrees with west winds 0-7 mph.

Tuesday night, partly cloudy with a 30 percent chance for showers. Low near 47 degrees with west winds 0-7 mph. 

8 – 14 Day Trends: Wed. Sep. 29 –  Tue. Oct. 5
Above normal temperatures / Near 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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