Sat Feb 22 12:13:20 AM EST 2025 Northeastern Yellowstone- Including the cities of Custer and Pompeys Pillar 1012 PM MST Fri Feb 21 2025 .REST OF TONIGHT...Partly cloudy. Lows in the lower 20s. West winds 5 to 15 mph. .SATURDAY...Partly sunny. Highs in the lower 40s. West winds 5 to 15 mph. .SATURDAY NIGHT...Partly cloudy. Lows in the lower 30s. Southwest winds 5 to 15 mph. .SUNDAY...Mostly cloudy. Highs in the mid 40s. Southwest winds 5 to 15 mph. .SUNDAY NIGHT...Mostly cloudy. A 30 percent chance of rain overnight. Lows in the upper 30s. West winds 5 to 15 mph. .MONDAY...Decreasing clouds. A 20 percent chance of rain in the morning. Highs in the upper 40s. .MONDAY NIGHT...Partly cloudy. Lows in the lower 30s. .TUESDAY...Partly sunny with a 40 percent chance of rain. Highs in the upper 40s. .TUESDAY NIGHT...Partly cloudy. A 20 percent chance of rain in the evening. Lows in the lower 30s. .WEDNESDAY...Mostly sunny. Highs in the mid 40s. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 20s. .THURSDAY...Sunny. Highs around 50. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 30s. .FRIDAY...Mostly sunny. Highs around 50.