Today Sunny, with a high near 11. Wind chill values as low as -16. Blustery, with a west southwest wind 10 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.   Tonight Increasing clouds, with a low around -18. Wind chill values as low as -29. Northwest wind 5 to 10 mph.     Friday A 30 percent chance of snow after noon. Mostly cloudy, with a high near 9. Wind chill values as low as -27. North northeast wind 5 to 10 mph becoming southeast in the morning.   Friday Night Cloudy, then gradually becoming partly cloudy, with a low around 0. Wind chill values as low as -11. Southeast wind 5 to 10 mph becoming south southwest after midnight.     Saturday Mostly sunny, with a high near 18. South southwest wind around 5 mph becoming west in the afternoon.   Saturday Night Mostly clear, with a low around 0. Southwest wind around 5 mph.