The southwestern mountains of Colorado are under a snow advisory, with up to 8 inches of accumulation possible by early evening.

A freeze watch is in effect for tonight in the San Luis Valley region and much of southeastern Colorado is under a flash flood watch.

Don't set the holiday picnic table just yet. You might need to clear some snow first.

The National Weather Service says rain or thundershowers are likely through this evening along the Front Range, with snowshowers expected by midnight in the Castle Rock area. Thunderstorms could be heavy on the eastern plains.

For the metro area, today's high is forecast at 57 degrees, with lows in the mid-30s tonight. Highs should climb into the mid-70s by this weekend, with a chance of late-day thunderstorms.