From the WABI-TV5 & CW Forecast Center:
The ridge of high pressure that brought sunny, warm and increasingly humid conditions to New England today will continue to slowly slip southeast off the Mid-Atlantic coastline tonight and tomorrow. A south to southwest breeze on the backside of the high will continue to draw humid air into our region tonight and Wednesday. Skies will start out partly to mostly sunny tomorrow and temps will quickly warm into the 80s across Most of Maine by noontime. An approaching cold front will interact will the warm, muggy and unstable airmass over our region later tomorrow and that will lead to developing thundershowers during the afternoon and evening hours. The thunderstorms will slide from northwest to southeast across Maine tomorrow as the cold front sweeps southeast across New England later in the day. The combination of the unstable airmass on top of our region and the sharp cold front entering Maine will likely allow some of the storms to become strong to severe tomorrow afternoon and evening. The main threat from the thunderstorms are a strong and gusty wind, along with hail.
Leftover showers will likely still be found over eastern parts of Maine Thursday morning as the front only slowly exits to the east of the Maine coastline. On Thursday cooler and less humid air will begin to build into Maine as a northwest breeze develops behind the cold front. High pressure building into the Northeast should bring bright, less humid and pleasant weather to all of New England Friday and Saturday. A couple of disturbances aloft may kick off a few stray showers both Friday and Saturday afternoon, but most of the time it will be partly sunny. A developing southerly breeze later Sunday will cause humidity levels to begin to creep back up and by Monday showers and storms will return to our region as a storm system approaches New England from the west.
Tonight: Mostly clear, mild and muggy, with patchy fog and low temps in the 60s.
Wednesday: Partly sunny, warm and humid, with scattered strong thundershowers likely later in the day and high temps in the 80s to near 90.
Thursday: Partly sunny, with lingering showers possible during the morning and turning less humid, with high temps in the mid 70s to low 80s.
Friday: Partly sunny, with stray showers possible north and high temps in the mid 70s to low 80s.
Saturday: Partly sunny, with stray showers possible north and high temps in the mid 70s to low 80s.
Sunday: Partly sunny and becoming more humid, with possible late day showers and storms and high temps in the upper 70s to mid 80s.
WABI-TV5 & CW Meteorologist
There are no active watches, warnings or advisories ...