A good chunk of the country will have at least a chance for some kind of precipitation from now through Sunday.
First, in the Northeast, a low-pressure system of the New England coast will produce mainly scattered rain showers in the Northeast and possibly as far west as western NY and central PA. Rainshower chances continue into the first half of Saturday mainly in southern New England as this system moves further south and east in the Atlantic well off the east coast.
Further west, a cold front will be the main focal point for precipitation through the weekend beginning in the central part of the country today and tracking eastward Saturday and Sunday. Wintry precipitation is expected today from the northern TX panhandle northeast to western lower MI. Some light snow and ice accumulation are possible in some of these areas with the best chances for a few inches of snow coming in northwest MN early today. A few severe storms will be possible on the far southern part of the storm in south TX with the main threat being hail. Any wintry precipitation will end early in the UP of MI, then just rain is expected as this front moves east through the rest of the weekend.
Finally, a storm system will build onto the west coast late this evening and through the weekend creating a west weekend for Portland, OR, the Bay Area, and rain chances could build as far south as Los Angeles and San Diego by Sunday.