The weather pattern across the country will be influenced by an upper trough in place from the Northern Plains to the Northeast.
A low-pressure system will exit New England early today, so rain in this region will gradually diminish from southwest to northeast as this system heads into eastern Canada. Winds will stay strong today in parts of New England behind this system where High Wind Warnings and Wind Advisories are in effect.
Further west two systems will move through the Northern Plains and Great Lakes producing rain and snow. The first system today moving through these regions today and Saturday, precipitation will be fairly scattered and light and the next system on Sunday will be an Alberta Clipper producing more organized precipitation for the Dakotas, MN, northern IA, and WI. Some light snow accumulation will be possible on Sunday mainly an inch or two at most.
With northwest upper flow in place over two-thirds of the country, high temperatures through the weekend will be below average for much of the country with the exception of western ID, WA, OR, CA, the Desert Southwest, and the southern half of FL where highs will be right around average. In fact, widespread freezes are possible at the start of today from southern OH/ western WV southwestward, to parts of southeast TX.