Fri Feb 21 05:00:51 PM EST 2025 Cheyenne County- Including the cities of Sidney and Brownson 259 PM MST Fri Feb 21 2025 .TONIGHT...Mostly clear. Not as cold with lows 15 to 20. Northwest winds 5 to 10 mph, becoming west 10 to 15 mph. .SATURDAY...Sunny. Not as cool with highs in the lower 50s. West winds 10 to 15 mph with gusts up to 25 mph. .SATURDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Not as cold with lows in the mid 20s. West winds 10 to 15 mph with gusts up to 25 mph. .SUNDAY...Sunny, breezy with highs in the upper 50s. West winds 15 to 25 mph with gusts up to 35 mph. .SUNDAY NIGHT...Partly cloudy. Lows in the mid 30s. West winds 15 to 20 mph with gusts up to 30 mph. .MONDAY AND MONDAY NIGHT...Mostly clear and very windy. Highs in the lower 60s. Lows in the lower 30s. .TUESDAY...Mostly sunny and windy. Highs in the lower 60s. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear and windy. Lows in the mid 20s. Highs in the upper 40s. .THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs in the upper 50s. Lows around 30. .FRIDAY...Mostly sunny and breezy. Highs in the upper 50s.