March 25, 2011 7:20 pm EarthWatch Afternoon Forecast: Friday, March 25, 2011 How long will this cold last? US & World Videos 2:40 How long will this summer-like warmth last? 2:14 The summer preview continues 2:16 Clearing out, warming into the 80s 2:35 Warm trend continues, but rain is on the way 2:47 The string of warm days continues