From the WABI-TV5 & CW Forecast Center:
High pressure located off to the southeast of New England will continue to pump a rather warm and increasingly humid airmass into our region tonight and tomorrow. Skies tonight and early tomorrow will be mostly clear, but with increasing humidity tonight the sky will become hazy and patchy fog is likely by daybreak tomorrow. The ridge of high pressure will bring fair skies and warm temps to Maine most of tomorrow, but clouds ahead of approaching cold front will begin to move into our region during the afternoon hours, with even a few scattered thundershowers possible late over the western Maine Mountains. High temps tomorrow, will climb into the low to mid 80s inland, but hold in the 70s along the coastline due to a southerly breeze coming in from the Gulf of Maine.
The cold front west of New England tomorrow will continue to move east and cross our region Wednesday morning and early afternoon. The front will bring scattered showers and storms to much of Maine tomorrow night and part of Wednesday, but by later in the day drier air will filter into Maine as the front slips offshore and a northwest breeze develops. Wednesday high temps will range from the mid 70s to low 80s, but after a very muggy start to the day the humidity levels will begin to decrease.
High pressure building east behind the cold front will bring partly sunny, mild and pleasant weather to Maine Thursday. A storm will be riding east along a stalled front south of New England, but at this time it appears the storms showers will remain south of our region later Thursday into early Friday. High pressure should control the conditions across Maine Friday and Saturday, with a developing southerly breeze once again allowing the humidity levels to creep back up.
Tonight: Mostly to partly clear, with patchy fog and a light wind and low temps in the upper 50s to mid 60s.
Tuesday: Partly sunny, breezy and humid, with a few late day thundershowers possible over the western mountains and high temps in the mid 70s to mid 80s, coolest along the coastline.
Wednesday: Mostly cloudy and muggy, with scattered showers and thundershowers likely early then partial clearing late, with high temps in the mid 70s to low 80s.
Thursday: Partly sunny, with high temps in the upper 70s to low 80s.
Friday: Partly to mostly sunny and becoming a bit more humid, with high temps in the upper 70s to mid 80s.
Saturday: Partly sunny and humid, with high temps in the upper 70s to mid 80s.
WABI-TV5 & CW Meteorologist