| NWS Forecast for: South Sioux Issued by: National Weather Service Cheyenne, WY Last Update: 137 AM MDT Wed Jun 17 2026 |  |
Rest Of Tonight: Mostly clear. Lows around 60. Northwest winds 15 to 20 mph with gusts up to 35 mph. Wednesday: Sunny, breezy and not as warm with highs in the lower 80s. Northwest winds 15 to 25 mph with gusts up to 40 mph. Wednesday Night: Mostly clear in the evening, then becoming partly cloudy. Breezy, cooler with lows in the upper 40s. North winds 20 to 25 mph with gusts up to 40 mph, becoming northwest 5 to 10 mph with gusts up to 20 mph after midnight. Thursday: Sunny. Highs in the upper 70s. North winds 5 to 10 mph. Thursday Night: Mostly clear. Lows in the lower 50s. East winds 5 to 10 mph with gusts up to 20 mph. Juneteenth: Sunny, hot with highs in the mid 80s. Friday Night: Partly cloudy. Lows in the mid 50s. Saturday: Partly sunny. Showers likely with a chance of thunderstorms in the afternoon. Hot with highs in the upper 80s. Chance of rain 70 percent. Saturday Night: Partly cloudy with showers likely with a chance of thunderstorms in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the mid 50s. Chance of rain 70 percent. Sunday: Mostly cloudy with a chance of showers in the morning, then mostly sunny with showers likely with a chance of thunderstorms in the afternoon. Not as warm with highs in the upper 70s. Chance of rain 70 percent. Sunday Night: Mostly cloudy with a chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows around 50. Chance of rain 40 percent. Monday: Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 50 percent. Monday Night: Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the lower 50s. Chance of rain 50 percent. Tuesday: Mostly sunny. Highs in the upper 70s. | |
| Zone Forecast: South Sioux | |
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