Northern Sioux County- Including the city of Harrison 217 PM MDT Tue Apr 23 2024 .TONIGHT...Partly cloudy. Lows in the upper 30s. Southeast winds 10 to 15 mph. .WEDNESDAY...Mostly sunny. A chance of sprinkles in the afternoon. Warmer with highs in the lower 70s. South winds 15 to 20 mph. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then partly cloudy with a chance of sprinkles after midnight. Areas of fog after midnight. Lows in the mid 40s. South winds 10 to 15 mph with gusts up to 25 mph. .THURSDAY...Mostly sunny. A chance of showers in the afternoon. Highs in the lower 70s. South winds 15 to 20 mph. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of thunderstorms. Showers likely, mainly in the evening. Lows in the mid 40s. Southwest winds 15 to 20 mph, becoming northwest after midnight. Chance of rain 70 percent. .FRIDAY...Showers in the morning, then showers with a chance of thunderstorms in the afternoon. Windy and much cooler with highs in the upper 50s. Chance of rain 90 percent. .FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of showers. Breezy with lows in the lower 40s. .SATURDAY...Showers likely. Cooler with highs in the upper 40s. Chance of rain 70 percent. .SATURDAY NIGHT AND SUNDAY...Mostly cloudy. A 50 percent chance of rain showers. Lows in the mid 30s. Highs around 50. .SUNDAY NIGHT...Partly cloudy. Cold with lows in the lower 30s. .MONDAY...Sunny. Much warmer with highs in the upper 60s. .MONDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 40s. .TUESDAY...Sunny. Highs in the lower 70s. $$