St. John Valley weather for Aug. 5-11, 2020
Short-Term Outlook: Wednesday – Friday
Isaias tracked west of the Valley overnight far enough that most affects from the storm were diminished (winds were less strong, which was good; rain was not as copious–northern Maine could have used more precipitation). A cold front will cross the region today associated with the upper trough and low which will absorb the remnants of Isaias in Canada.
High resolution models show isolated cells moving across the Valley this afternoon. Some isolated strong storms with gusty winds are the main concern. Partly cloudy skies this afternoon will become mostly clear overnight with less humid conditions as high pressure spreads from the eastern Great Lakes into New England and the Middle Atlantic. Partly cloudy to mostly clear skies and dry conditions will prevail Thursday and Friday with near seasonal temperatures Thursday and slightly warmer temperatures Friday.
Today & Tonight
Decreasing clouds this morning and becoming partly cloudy in the afternoon. Slight chance for isolated showers and thunderstorms with some stronger storms may produce gusty winds. High near 80 degrees F with southwest winds 10 to 15 mph this morning with gusts to around 20 mph possible in Fort Kent and vicinity. Higher gusts possible over elevated terrain.
Overnight, becoming mostly clear with a slight chance for showers in the evening. Chance for precipitation 20 percent. Less humid with a low near 56 degrees F. Southwest winds 5 to 10 mph.
Thursday, August 6
Partly cloudy to mostly sunny and seasonable with a high near 75 degrees F. West winds 10 to 15 mph with gusts to around 20 mph.
Thursday night, mostly clear. Low around 56 degrees F with west winds 0 to 5 mph.
Friday, August 7
Mostly sunny with a high near 82 degrees F . West winds 5 to 10 mph.
Friday night, mostly clear with a low around 56 degrees F. West winds 0 to 5 mph.
Medium-Range: Saturday – Tuesday
High pressure will slowly drift across the region through the period with partly cloudy to mostly clear skies and dry conditions. Clouds increase Tuesday as a cold front approaches from the west with a chance for afternoon/evening showers and thunderstorms.
Saturday, August 8
Partly cloudy with a high in the lower 80s. West/southwest winds 0 to 5 mph.
Saturday night, mostly clear with a low in the lower 60s. West winds 0 to 5 mph.
Sunday, August 9
Mostly sunny with a high in the middle 80s. West/northwest winds around 0 to 7 mph.
Sunday night, mostly clear with a low in the lower 60s. West/southwest winds 0 to 5 mph.
Monday, August 10
Mostly clear in the morning then partly cloudy in the afternoon with a high in the mid-80s. Southwest winds 5 to 10 mph.
Monday night, partly cloudy with a low in the upper 50s. South/southwest winds 0 to 5 mph.
Tuesday, August 11
Partly sunny with a 30 percent chance for afternoon evening showers and a slight chance for thunderstorms. High in the upper 80s with south/southwest winds 5 to 10 mph.
Tuesday night, partly cloudy with a slight chance for showers and a slight chance for thunderstorms. Low in the mid-60s with south/southwest winds 0 to 5 mph.
Regional Long-Range Trends: Wed. Aug. 12 – Mon. Aug. 18
Above normal temperatures and 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.