| NWS Forecast for: North Sioux Issued by: National Weather Service Cheyenne, WY Last Update: 327 AM MDT Wed Oct 14 2026 |  |
| Today: Patchy fog this morning. Cloudy with a 50 percent chance of rain. Cooler with highs in the mid 40s. East winds 5 to 10 mph. Tonight: Rain. Lows in the lower 40s. East winds 5 to 10 mph, becoming north 10 to 15 mph with gusts up to 25 mph after midnight. Chance of rain 90 percent. Thursday: Cloudy with rain in the morning, then mostly sunny in the afternoon. Windy with highs in the lower 50s. North winds 15 to 20 mph with gusts up to 35 mph, becoming northwest 20 to 30 mph with gusts up to 45 mph in the afternoon. Chance of rain 90 percent. Thursday Night: Mostly clear. Widespread frost after midnight. Much colder with lows in the mid 20s. Northwest winds 15 to 20 mph with gusts up to 35 mph. Friday: Widespread frost in the morning. Sunny. Highs in the upper 50s. West winds 5 to 10 mph, becoming south with gusts up to 20 mph in the afternoon. Friday Night: Clear. Not as cool with lows in the mid 30s. Saturday And Saturday Night: Mostly clear. Highs in the mid 70s. Lows in the mid 40s. Sunday: Mostly sunny. Highs in the upper 60s. Sunday Night: Mostly clear. Lows around 40. Monday And Monday Night: Clear. Highs in the lower 70s. Lows in the mid 40s. Tuesday: Sunny. Highs in the mid 70s. | |
| Zone Forecast: North Sioux | |
Visit your local NWS office at: https://www.weather.gov/cys |