| NWS Forecast for: South Sioux Issued by: National Weather Service Cheyenne, WY Last Update: 1049 PM MDT Mon Jun 16 2025 | |
Rest Of Tonight: Mostly cloudy with a chance of showers. A chance of thunderstorms. Some thunderstorms may be severe late this evening. Lows in the mid 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent. Tuesday: Mostly cloudy. A chance of showers and thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. Some thunderstorms may be severe in the afternoon. Not as warm with highs around 70. East winds 5 to 10 mph. Chance of rain 80 percent. Tuesday Night: Mostly cloudy with a chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Some thunderstorms may be severe. Lows in the lower 50s. North winds 5 to 10 mph, becoming northwest after midnight. Chance of rain 40 percent. Wednesday: Sunny, warmer with highs in the lower 80s. Northwest winds 5 to 10 mph. Wednesday Night: Clear. Lows in the mid 50s. Southeast winds 5 to 10 mph, becoming south with gusts up to 20 mph after midnight. Juneteenth: Sunny, warmer with highs in the lower 90s. Thursday Night: Mostly clear. Lows around 60. Friday: Sunny, hot with highs in the upper 90s. Friday Night: Mostly clear. Lows in the upper 50s. Saturday: Sunny, hot with highs in the upper 90s. Saturday Night And Sunday: Mostly clear. Hot. Lows in the upper 50s. Highs in the upper 80s. Sunday Night: Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly cloudy after midnight. Lows around 50. Chance of rain 40 percent. Monday: Partly sunny. Not as warm with highs in the lower 70s. | |
| Zone Forecast: South Sioux | |
Visit your local NWS office at: https://www.weather.gov/cys |