Today’s weather will vary quite a bit across the region, with southern NH holding on to oppressive heat and humidity, while areas northeast of Augusta enjoy a much drier airmass. The one thing the entire region will have in common will be partly to mostly sunny skies, with the most sunshine found downwind of the mountains as weak NW flow sets up a weak upslope/downslope regime.
In the satellite loop linked above, you can see some clouds moving southeastward near Augusta. This is the boundary that will bring drier air to the northeastern half of the region today. It will eventually run out of steam, with southwestern areas remaining very muggy.
Dry conditions are expected across the area today in the absence of moisture extending past the low levels.