Apex Weather

St. John Valley weather for Sept. 7-13, 2022

3-Day Outlook: Wednesday-Friday

High pressure will bring mostly sunny skies to the Saint John Valley today. Clouds will increase overnight with mostly cloudy skies expected Thursday as a cold front approaches from the west. Some patchy river fog is possible overnight. The front is expected to move through Thursday afternoon with a chance for scattered showers and isolated thunderstorms.

While locally heavy downpours may occur where any storms develop, overall little precipitation is expected from this front. High pressure builds in Thursday night with partly cloudy skies developing. Some fog is possible overnight into Friday. Friday will be partly cloudy to mostly sunny with daytime highs in the upper 70s for most Valley locations.

Today and Tonight 

Mostly sunny with a high around 78 degrees. West wind around 2 mph.

Tonight, mostly clear through midnight then becoming partly cloudy with a 5 percent chance for showers. Patchy fog possible after midnight. Low near 51 degrees. South wind near calm. 

Thursday, Sept. 8

Mostly cloudy with a 30 percent chance for afternoon showers and isolated thunderstorms. Trace to 1/10th-inch rainfall expected with higher amounts possible in thunderstorms. High around 74 degrees. Southwest wind 0-5 mph becoming east in the afternoon.

Thursday night, partly cloudy with a 20 percent chance for showers in the evening. Areas of fog possible overnight. Low near 51 degrees. Northeast wind near calm. 

Friday, Sept. 9

Partly cloudy to mostly sunny with a high near 78 degrees. 5 percent chance for showers. South-southeast wind 2-3 mph.

Friday night, mostly clear with a low near 53 degrees. South wind 0-5 mph.

4- to 7-day: Saturday-Tuesday

Mostly sunny skies Saturday will remain mostly clear Saturday night. Partly cloudy skies develop Sunday as the ridge of high pressure over the region weakens. Partly sunny skies are expected Monday with a chance for isolated afternoon showers. A slight chance for showers continues overnight into Tuesday with increased chances for shower activity Tuesday afternoon as an upper-level approaches from the Great Lakes.

Saturday, Sept. 10

Mostly sunny with a high around 82 degrees. South wind 0-5 mph.

Saturday night, mostly clear with a low near 56 degrees. South wind 0-5 mph.

Sunday, Sept. 11

Partly cloudy with a 10 percent chance for afternoon showers. High around 81 degrees. Southwest wind 0-5 mph.

Sunday night, partly cloudy with a 10 percent chance for showers. Low near 58 degrees. West wind 0-5 mph.

Monday, Sept. 12

Partly sunny with a 20 percent chance for afternoon showers. High around 77 degrees. West wind 0-5 mph.

Monday night, partly cloudy with a 20 percent chance for showers. Low near 55 degrees. Southwest wind 0-5 mph.

Tuesday, Sept. 13

Partly sunny with a 30 percent chance for mainly afternoon showers. High around 75 degrees. South wind 0-5 mph.

Tuesday night, mostly cloudy with a 30 percent chance for showers. Low near 57 degrees. South wind 0-5 mph.

8- to 14-Day Trends: Wednesday, Sept. 14-Monday, Sept. 19

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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