No matter what you do for a living, 6 "good" for every 1 "bad" is a favorable ratio. Professional baseball player? You're batting 0.857. Real estate "flipper"? You're a millionaire. Weather guy? Well, let's be real...that isn't going to happen. (self deprecation is a key component to the comedic process you know)
Anyhow, my point is that 6 out of the next 7 days look pretty good to me. There will be a cold front moving through tonight and tomorrow so that's the "1", but high pressure builds back in for the rest of the work week. It won't be TOTALLY sunny and dry every single day of the Wednesday-Sunday stretch but the vast majority of the state will experience pleasant summer conditions.
Today: Despite the approach of a cold front from the eastern Great Lakes, most of us will see a mostly sunny Monday. The front isn't moving that rapidly so look for a good deal of sunshine with just some afternoon thin clouds streaming in from the west. The mountains may pop up an isolated shower or thunderstorm in the 3 PM to 6 PM time frame due to instability out ahead of the boundary, which is fairly common in this kind of setup, but they will be in the minority. Temperatures range from 80-85 in most spots with a "sneaky hot" day likely in places like Sanford, Fryeburg, and Berlin, NH. The immediate coastline near Bar Harbor will top out in the mid 70s with a south wind off the water.
Tonight: Showers and thunderstorms become pretty widespread moving in from west to east after 8 PM. The heaviest activity actually looks to occur after midnight so there could be a few unhappy campers woken up by heavy rain and thunder. (By the way, if you have one of those dogs who flips out during thunderstorms, I've heard "Thundershirts" actually work. Check out this little guy, Bodega, in his shirt. If they had a human equivalent of this product I would totally buy it. Not because I'm afraid of thunderstorms, of course, but because it makes your shoulders look all jacked and stuff #confessionsofathinman)
Tuesday: All indications are that the cold front will drag its feet on the way out of Maine so expect lots of clouds and a continuation of shower/thunderstorm activity on Tuesday. Western Maine should clear out by the afternoon but the coastline will see some instability driven thunderstorms as the boundary struggles to push into the Gulf of Maine. Temperatures will be limited to the 70s due to the lack of consistent sunshine.
Wednesday: Canadian air will spill down behind the front of Wednesday making for a cool and refreshingly dry day. Dew points should be in the upper 40s to low 50s giving the air a fall like quality. Any morning clouds will give way to total sunshine by mid morning.
There will be a warm front intruding on northern Maine Thursday so look for a split state forecast there. Mostly cloudy with some showers north of Bangor, but mostly sunny over southern Maine.
High pressure takes a more commanding hold for Friday and at this point it looks to maintain control through Saturday.
There is a little "troughyness" indicated on Saturday afternoon as a system passes through Canada so I'm not willing to rule out a mountain shower. But hey, that's day 6 so we will worry about it when we get closer.
The extended range leaves some questions about Labor Day itself as some computer models are advecting the remaining moisture from Isaac into Maine as a decent rainstorm. Then again, those same computer models had an Isaac landfall for Rhode Island originally...so they aren't to be trusted with tropical systems.
By the way, about Isaac... Good news: he hasn't strengthened much overnight. Bad news: he is likely heading straight for New Orleans.