| NWS Forecast for: South Sioux Issued by: National Weather Service Cheyenne, WY Last Update: 323 AM MDT Mon Oct 13 2025 | |
Today: Sunny early this morning, then becoming partly sunny. Widespread frost late. A slight chance of rain showers this afternoon. Breezy with highs in the upper 50s. Southeast winds 5 to 10 mph, increasing to 15 to 25 mph with gusts up to 35 mph. Chance of rain 20 percent. Tonight: Mostly cloudy with a 40 percent chance of showers. Lows in the lower 40s. Southeast winds 15 to 20 mph with gusts up to 30 mph. Tuesday: Mostly cloudy in the morning, then becoming mostly sunny. Highs around 60. Southeast winds 10 to 15 mph with gusts up to 25 mph. Tuesday Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 40s. Southeast winds 5 to 10 mph. Wednesday: Mostly sunny. Warmer with highs in the lower 70s. Southeast winds 5 to 10 mph. Wednesday Night: Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. Lows in the mid 40s. Chance of rain 50 percent. Thursday: Partly sunny with a 40 percent chance of showers. Cooler with highs in the lower 60s. Thursday Night: Partly cloudy. A chance of rain showers in the evening. Lows in the upper 30s. Chance of rain 30 percent. Friday: Sunny. Highs in the mid 60s. Friday Night And Saturday: Partly cloudy. Lows in the mid 30s. Highs in the upper 50s. Saturday Night And Sunday: Mostly clear. Lows in the mid 30s. Highs around 70. | |
| Zone Forecast: South Sioux | |
Visit your local NWS office at: https://www.weather.gov/cys |