Today Patchy blowing snow after 10am. Mostly sunny and cold, with a high near 5. Wind chill values as low as -18. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 35 mph.   Tonight Mostly clear, with a low around -15. Wind chill values as low as -30. West northwest wind 5 to 15 mph.     Thursday Increasing clouds, with a high near 7. Wind chill values as low as -31. West wind 5 to 10 mph becoming south southeast in the afternoon.   Thursday Night A 50 percent chance of snow. Cloudy, with a low around 5. Southeast wind around 10 mph. New snow accumulation of less than one inch possible.     Friday Snow, mainly after noon. The snow could be heavy at times. High near 14. Southeast wind around 10 mph becoming east northeast in the afternoon. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.   Friday Night Snow. Low around 1. East northeast wind 10 to 15 mph becoming north after midnight. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.