I know it's not technically Fall yet but 1) meteorological (AKA the nerd calendar. I'm Mr. December in it.) Autumn began September 1st 2) Mother Nature don't care (nor does the Honey Badger...I know, I know it's a bit played out, I won't reference it again) what the calendar says 3) it FEELS like Fall.
High pressure is in place today producing a postcard-worthy bright, cool and dry Thursday. This weather will continue through Friday before conditions become less settled for the weekend.
Today: Sunny and beautiful. Temperatures will stay a bit on the cool side due to a chilly start, highs will stay in the 60s in most spots and even 50s in the mountains.
Tonight: Mostly clear and cool. Not quite as chilly as last night as the airmass has modified a bit. Lows will still hits the 30s in the foothills but stay in the 40s along the coastline.
Friday: High pressure still in control but it will slowly be pushed northward through the day as a front approaches from the EAST (unusual). The result will be mostly sunny skies with a few more clouds along the coastline as they will be closer to the westward moving frontal boundary. High temperatures should be a few degrees warmer than today, in the upper 60s.
So that westward moving cold front: It's actually the same boundary that moved through on Tuesday night, but it hasn't been able to push that far away from the state. That's because a big, blocking high has set up over the Atlantic and is impeding the normal eastward progress of systems exiting the Gulf of Maine. As a result look for the front to push back into Downeast and Midcoastal Maine on Friday night and produce some scattered shower activity. The activity should be confined to eastern Maine, due to the curvature of the coastline, with southern and western Maine remaining dry.
Saturday: Same setup. Showers possible, especially in the morning, but ONLY across Downeast Maine while the rest of the state is dry with a mixture of sun and clouds. Overall it will be a pleasant day with high temperatures in the upper 60s to low 70s. This is the better of the two weekend days.
Sunday: A cold front approaches from the west and produces some light shower activity. The activity will occur in the morning over southern Maine, with some afternoon clearing. Meanwhile Downeast will see most of the showers in the afternoon and early evening.
Not related to weather in any way: I hate when people say "You HAVE to watch this ____ (show, movie, viral video)", it's pushy and chances are your taste are different than mine (AKA bad). BUT, I must recommend "Game of Thrones" on HBO. I received it via Netflix a few days ago and it rocks pretty hard. It's the first show ever that me and my wife can watch together since it combines romance with knights-Dungeons & Dragons-nerdom-random-violence-man-stuff. So, I'm going to say it, you HAVVEEEE to watch it.