367 FPUS63 KFSD 202155 SFPSD SDZ001>074-211100- STATE FORECAST FOR SOUTH DAKOTA NATIONAL WEATHER SERVICE SIOUX FALLS SD 355 PM CST THU NOV 20 2008 .TONIGHT...MOSTLY CLEAR AND VERY COLD EAST. INCREASING CLOUDS WEST. LOWS FROM THE SINGLE FIGURES EAST TO NEAR 20 FAR SOUTHWEST. .FRIDAY...SNOW LIKELY WEST IN THE MORNING...SPREADING INTO THE EAST DURING THE AFTERNOON. HIGHS FROM THE UPPER 20S NORTH AND EAST TO THE MID 40S SOUTHWEST. .FRIDAY NIGHT...SNOW LIKELY EAST. CHANCE OF EVENING LIGHT SNOW WEST...THEN DECREASING CLOUDS. LOWS MOSTLY LOWER TO MID 20S. .SATURDAY...MOSTLY CLOUDY EAST TO PARTLY CLOUDY CENTRAL AND WEST. HIGHS IN THE MID 30S FAR EAST TO THE MID 50S FAR SOUTHWEST. .SUNDAY...PARTLY SUNNY. SLIGHT CHANCE OF LIGHT SNOW NORTHEAST AT NIGHT. LOWS 20 TO 30. HIGHS FROM THE MID 30S NORTHEAST TO 45 TO 50 SOUTHWEST. .MONDAY...MOSTLY CLOUDY EAST TO MOSTLY CLEAR WEST. LOWS IN THE UPPER TEENS TO LOWER 20S. HIGHS AROUND 30 FAR EAST TO NEAR 50 FAR SOUTHWEST. .TUESDAY...MOSTLY SUNNY. LOWS IN THE UPPER TEENS NORTHEAST TO THE LOWER 20S WEST AND FAR SOUTH. HIGHS IN THE MID 30S FAR EAST TO 50 TO 55 SOUTHWEST. $$ RYRHOLM