I'm not sure if you noticed, but it's a little humid :-).
It's one of the top weather cliches in all the land; "It's not the heat, it's the humidity" but it has some truth to it (higher dew points impede your body's nature ability to cool itself via sweat) but in the Northeast you rarely get one without the other. Think about it; when was the last time Maine was 85 F + with very dry air? It happens OCCASIONALLY but it's very rare. So, if you want some summer warmth, you usually have to accept the summer humidity with it. (This is the same message I convey to my group of friends. Sure, you'd rather just invite my wife to hang out because shes cooler, nicer, prettier. But I'm coming along, like it or not, it's an awful bite-the-bullet-package deal)
Today: Maine is still squarely in the "warm sector", allowing a moist southerly flow statewide. Temperatures will end up in the upper 70s to mid 80s but dew points will get as high as 73-74 making for a VERY sticky feel. There should be a decent window of sunshine, especially away from the coastline, in between the morning fog burning off and the projected late afternoon increase in clouds. I'd say 11 am to 3 PM will be the best part of the day as clouds will spill into western Maine by the late afternoon. Although the cold front will only be in Vermont at this point, some computer models are producing shower activity as close as the ME/NH border by late afternoon. My feeling is that we will stay dry during the daylight hours as the front weakens.
Tonight: That cold frontal boundary we were just talking about WAS pretty strong originally, but due to the timing as it crosses through Maine, we shouldn't have too many problems with severe weather. Most of the state will get hit by at least one shower or thunderstorm this evening, and a FEW will produce heavy downpours, but organized strong storms seem unlikely. As far as precipitation timing, most of us won't see the showers until after midnight, with the heaviest coming in the early morning hours of Monday. Overnight lows stay very mild, in the upper 60s to low 70s.
Monday: Some showers will linger along the Midcoast and Downeast through the early morning as the front moves offshore, meanwhile those of you in the mountains should wake up to sunny skies. Eventually the entire state turns sunny by noon and winds shift out of the west. This is HUGE as it allows slightly cooler but, more important, drier air to filter into Maine. Now, this isn't going to be "man is it time for football and falling leaves" dry, crisp air...but it dew point will fall to around 60 at least. As far as the air temperature, 80-85 should cover most of us.
Tuesday and Wednesday both look fantastic with mostly sunny skies and that drier air still holding its ground. Highs will hover in the low 80s and I will hover at the beach working on my man-tan.
Things turn decidedly "troughy" for later in the week so there will be a chance of showers on Thursday with a MUCH better chance of legit rain on Friday afternoon.
At this point next weekend doesn't look too promising as an upper level low will be stalled overhead, but there's still time for that to change.
Sidenote: Tell tale sign it's super humid . Shower with really hot water and turn off your bathroom fan. Wait about 5 minutes until the room is sufficiently steamy. If your mirror isn't fogged when you get out...it's sticky-central. This also works if it's VERY hot in your bathroom preceding the shower, but you'd know that already and probably take a cool shower.