| NWS Forecast for: South Sioux Issued by: National Weather Service Cheyenne, WY Last Update: 1128 PM MST Thu Nov 5 2026 |  |
| Rest Of Tonight: Mostly cloudy. Near steady temperature in the mid 30s. South winds around 5 mph. Friday: Mostly cloudy in the morning, then becoming mostly sunny. Highs in the mid 50s. West winds 5 to 10 mph. Friday Night: Mostly clear. Lows in the lower 30s. Light and variable winds, becoming west around 5 mph after midnight. Saturday: Sunny. Highs around 60. West winds 5 to 10 mph. Saturday Night: Partly cloudy in the evening, then becoming clear. Lows in the mid 30s. West winds around 5 mph. Sunday: Sunny. Highs in the mid 60s. Sunday Night Through Monday Night: Mostly clear. Lows in the upper 30s. Highs in the upper 50s. Tuesday: Mostly sunny. Highs in the lower 60s. Temperature falling into the mid 50s in the afternoon. Tuesday Night Through Thursday: Mostly clear. Lows in the upper 30s. Highs in the lower 60s. | |
| Zone Forecast: South Sioux | |
Visit your local NWS office at: https://www.weather.gov/cys |