High pressure will gradually bring in warmer temperatures to go along with dry, sunny weather.
This high pressure system will makes its way from the Canadian side of the northern Great Lakes east to a position just north of New England over the next few days.
As this system slowly moves east, it should keep an active storm track at bay to the south, with rain stretching from the Midwest to the Mid-Atlantic.
Some periods may be possible where there are clouds, but generally speaking it should be primarily sunny for the next few days across the Finger Lakes.
Temperatures will remain quite cool on Monday, as the Finger Lakes will be on the cool side of the high pressure system. High temperatures will only manage the mid to perhaps upper 50s. Temperatures overnight may be cold enough for some patchy frost to develop, with lows in the mid 30s.
Tuesday will be a bit warmer, with highs in the low 60s. Wednesday will be warmer yet, with mid and upper 60s possible.
On Thursday, the high pressure system will redevelop to the south. Meanwhile, low pressure will move into the Upper Great Lakes. Southerly winds will set up between the two systems, pushing high temperatures will into the 70s Thursday afternoon.
Unfortunately, the warm weather will not stick around. A cold front will move through on Friday with showers and maybe some thunderstorms. Cooler weather will return for the weekend behind the front, but may not stick around for too long.