The ideal cold front, it turns out, is like a well played breakup. It's best to just clear the air, move on abruptly and not stall on the way out. Unfortunately we don't get many of those in Maine. (The cold front that is, I have no idea how well we, as a state, handle the "It's not you, it's me" talk)
The next 36 hours are a perfect example. There's a cold front pushing into Vermont right now but that same front will linger around and make very little eastward progress until a larger storm pushes it around on Saturday. So the result will be your classic "unsettled" weather. It's not sunny, but it's not overcast, and there's always the chance of pop up showers and thunderstorms as long as that front is kind of hanging around.
Today: Some showers are already developing over the mountains and foothills in response to that slow moving cold front. The shower and thunderstorm activity, however, should remain confined to the higher elevations and western parts of the state through the day. A few "rouge" cells of precipitation may be able to drift into southern Maine by late afternoon, but for the most part locations to the east of I-95 will remain dry. Also of note: Some of the thunderstorms over western Maine could produce heavy downpours as the available moisture in the atmosphere is high. Elsewhere look for a mixture of sun and clouds and sticky air. Highs will end up in the low 80s in most spots. (P.S. I got several posts on my Facebook wall today complaining about how "hot" it was. Come on Mainers, the warmest spot in the state right now is 82 F! I can't give you this one...I just can't)
Tonight: Since the showers and thunderstorms are largely driven by the instability from the sun, look for the activity to settle down by 10-11 PM. After that it will be partly cloudy and sticky with lows in the 60s. Fog will likely develop along the coastline by the early morning.
Friday: The overall setup remains the same. Cold front stalled to our west, instability abounds (Not be confused with "the dude abides"). This time around I think there will be a bit more general cloud cover through the day, especially along the coastline with an onshore flow. So let's call it mostly cloudy along the shore with a mixture of sun and clouds inland. Once again the best chance of showers and thunderstorms will be in the foothills and mountains, and those storms could drop some briefly heavy rainfall. Temperatures will be a bit cooler when compared to today, but it will be every bit as humid.
Saturday: A large low pressure system will develop to our west and spin some rain our way. The actual center of the low will never get much closer than Chicago, but its associated warm front and cold front will bring us some slugs of moderate rainfall. It's tough to time these out given the setup but I'm thinking we see a good "slug" of rain Friday night through early Saturday morning and then a line of thunderstorms by Saturday afternoon as the cold front tries to push through. Overall, Saturday isn't looking good. I think onshore flow will keep the coastline socked in and areas that see any sunshine will find clouds billowing quickly as a result of the heating.
Some questions remain about Sunday as the system pulls away. It looks like some morning showers are possible but we should clear out by mid-day.
Ok I'm out of here. Enjoy your day.
You can friend me on Facebook, but don't you dare say "It's SO hot today!" on my wall. I don't want to hear it :-)