Expires:202512210500;;936400 FPUS55 KCYS 202129 ZFPCYS Zone Forecast Product for Southeast Wyoming and Western Nebraska Panhandle National Weather Service Cheyenne WY 228 PM MST Sat Dec 20 2025 NEZ096-210500- Southern Sioux County- Including the city of Agate 228 PM MST Sat Dec 20 2025 .THIS AFTERNOON...Mostly sunny. Much cooler with highs in the upper 30s. Temperature falling into the lower 30s late. Northwest winds around 5 mph. .TONIGHT...Mostly clear in the evening, then becoming partly cloudy. Cold with lows in the lower 20s. Southwest winds around 5 mph. .SUNDAY...Partly sunny. Not as cool with highs in the mid 50s. South winds 10 to 15 mph. .SUNDAY NIGHT...Partly cloudy. Not as cool with lows in the mid 30s. Southwest winds 10 to 15 mph with gusts up to 25 mph. .MONDAY...Mostly sunny and breezy. Highs in the mid 60s. West winds 15 to 25 mph with gusts up to 35 mph. .MONDAY NIGHT AND TUESDAY...Mostly cloudy. Lows around 30. Highs in the upper 50s. .TUESDAY NIGHT...Mostly cloudy. Lows in the mid 30s. .WEDNESDAY THROUGH THURSDAY NIGHT...Partly cloudy. Highs in the mid 60s. Lows in the upper 30s. .FRIDAY...Mostly sunny. Highs in the upper 50s. $$