After a prolonged “Indian summer” here in New England, A cool down is on the way. A large upper level trough will steer a bit of energy through the Mid Atlantic and off the coast where it will form a low pressure area by Wednesday. Models then diverge on the intensity and placement of the storm. There are 2 main camps- the Euro and the GFS take the storm to the NNE and rapidly deepen it off the New England coast. This would bring a cold rain to the coast and a wintry mix to the mountains. The GEFS and the CMC take the storm to the E and keep it very weak. Because the GFS and the Euro agree, which they never do, I will go with a coastal low moving NE off of Cape Cod, inside the benchmark of 40N 70W though that will make little significance this time as snow is not a factor other than at the highest elevations.

Beyond this, as the low moves NE, the return flow on the backside of the low will bring in cold air for Friday into the weekend. With this, frosts and freezes should be expected even at the coast. Also, areas typically favored for up-slope snow showers will likely see their first flakes especially high elevations. Due to the high temperatures of the soil at this time of year, little to no accumulations are expected.

Today will look a lot like yesterday with the better half of the day being the second half. Rain will exit Southern Maine this morning, and Northern Maine by late afternoon. Expect mostly sunny skies and warm temps elsewhere with the chance for some fog along the coast.

Location is the key word today as a cold front works through the region. In the north, we can expect more widespread rainy conditions while in the south, only a scattered shower is possible. By lunchtime, the front clears the coast, and everyone dries out. Looking ahead, we will be going into a more active pattern with much in the way of storms and fronts. There is a possibility that in a week or so’s time, cold air will dive southward causing a frost down to the coast and the possibility for snow in the mountains. Stay tuned!

Today, a warm front lifting over the region will bring some clouds to the region as well as a shift of winds from variable to definitively southerly. Mild temps will also overspread the region as the warm air filters in.

Today will feature more clouds than usual thanks to a departing weak cold front. Weak high pressure will improve conditions later as it slides south.

Today will feature more clouds than usual thanks to a weak cold front and a stationary coastal storm to our south. Temps will be milder thanks to the clouds as well.

Today will start out not quite as chilly as yesterday and will warm up a little bit more as well. Sunny skies will dominate again so enjoy the great fall weather!

A powerful cold front will touch off a line of showers and thunderstorms across the region this evening onto tonight. This line is capable of producing damaging winds in excess of 50mph especially over western regions of Maine and New Hampshire.