Apex Weather

St. John Valley weather for June 24-30, 2020

Short-Term Outlook: Wednesday – Friday

A cold/occluded front will approach from the Great Lakes today with showers likely this afternoon along with a chance for thunderstorms.

Rainfall totals are expected to be towards 1/4-inch in Fort Kent with higher totals possible in the Allagash and lower amounts along the eastern border region. Partly cloudy skies will develop overnight behind the front as drier air moves into the region. Partly cloudy skies are expected Thursday and Thursday night with a slight chance of afternoon showers/thunderstorms as an upper-low to the west circulates some weak disturbances across the Valley. Partly sunny-to-mostly cloudy skies are expected Friday as a stronger surface front approaches with showers and afternoon/evening thunderstorms expected across the region into the overnight hours.

Today & Tonight / Midsummer’s Day
Partly sunny this morning to mostly cloudy/overcast this afternoon with a 70 percent chance for showers and afternoon/evening thunderstorms. Rainfall totals between 1/10 and 1/4-inch possible. High around 80 degrees F with south winds 5 to 10 mph.

Overnight, mostly cloudy with a 70 percent chance showers and evening thunderstorms. Rainfall totals between 1/10 and 1/4-inch expected. Low near 57 degrees F with west/southwest winds 0 to 5 mph.

Thursday, June 25
Partly cloudy with a 20 percent chance for afternoon/evening showers and thunderstorms. High near 79 degrees F with southwest winds 5 to 10 mph.

Thursday night, partly cloudy with a 20 percent chance for showers. Low around 55 degrees F with south/southwest winds 0 to 5 mph.

Friday, June 26
Partly sunny with a 70 percent chance for showers and afternoon/evening thunderstorms. High around 75 degrees F. Southwest winds 5 to 10 mph.

Friday night, partly cloudy with a 50 percent chance for showers and thunderstorms. Low near 55 degrees F with southwest winds 0 to 5 mph.

Medium-Range: Saturday – Tuesday

An upper-level low/trough will persist across the SJV through the weekend into early next week. Cooler temperatures aloft and diurnal heating will allow showers and afternoon/evening thunderstorms to develop through the period as the system slowly meanders over the region. High pressure centered over the western Great Lakes will gradually take hold of the region’s weather by midweek.

Saturday, June 27
Partly sunny with a 60 percent chance for showers and afternoon/evening thunderstorms. High in the mid-70s with southwest winds 5 to 10 mph.

Saturday night, partly cloudy with a 70 percent chance for showers and thunderstorms. Low in the mid-50s with southeast winds 0 to 5 mph.

Sunday, June 28
Partly sunny with a 60 percent chance for showers and afternoon/evening thunderstorms. High in the mid-70s with east/northeast winds 5 to 10 mph.

Sunday night, partly cloudy with a 50 percent chance for showers and thunderstorms. Low in the middle 50s with northeast winds 0 to 5 mph.

Monday, June 29
Partly sunny with a 50 percent chance for showers and afternoon/evening thunderstorms. High in the lower 70s with northeast winds 5 to 10 mph.

Monday night, partly cloudy with a 40 percent chance for showers and thunderstorms. Low in the lower 50s with northeast winds 0 to 5 mph.

Tuesday, June 30
Partly sunny with a 30 percent chance for showers. High in the middle 70s with north/northeast winds 5 to 10 mph.

Tuesday night, partly cloudy with a slight chance for showers. Low in the lower 50s with north/northwest winds 0 to 5 mph.

Regional Long-Range Trends: Wed. July 1 – Tue. July 7

Above normal temperatures and below 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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