Expires:202512261500;;227594 FPUS55 KBYZ 260037 ZFPBYZ Zone Forecast Product for South Central and Southeast Montana National Weather Service Billings MT 536 PM MST Thu Dec 25 2025 Spot temperatures and probabilities of measurable precipitation are for tonight, Friday, Friday night, and Saturday. MTZ141-261500- Northern Sweet Grass- Including the city of Big Timber 536 PM MST Thu Dec 25 2025 .TONIGHT...Partly cloudy. Lows in the upper 30s. Southwest winds 15 to 25 mph. .FRIDAY...Mostly sunny. A 20 percent chance of rain showers early in the afternoon. Highs in the lower 50s. Southwest winds 15 to 25 mph. .FRIDAY NIGHT...Partly cloudy. Windy. Lows in the lower 30s. Southwest winds 15 to 30 mph with gusts to around 40 mph. .SATURDAY...Snow likely in the morning, then chance of snow in the afternoon. Windy, colder. Highs in the upper 30s. West winds 15 to 30 mph. Gusts up to 45 mph in the morning. Chance of precipitation 60 percent. .SATURDAY NIGHT...Mostly cloudy. A 20 percent chance of snow in the evening. Much colder. Lows around 9. West winds 5 to 15 mph. .SUNDAY...Mostly sunny. Highs around 30. .SUNDAY NIGHT...Increasing clouds. Warmer. Lows in the lower 20s. .MONDAY...Mostly sunny. Warmer. Highs in the lower 40s. .MONDAY NIGHT...Mostly cloudy. Lows around 30. .TUESDAY...Mostly cloudy. Highs in the upper 40s. .TUESDAY NIGHT...Mostly cloudy. Lows in the lower 30s. .WEDNESDAY...Mostly cloudy. Highs in the upper 40s. .WEDNESDAY NIGHT...Mostly cloudy. Lows in the mid 20s. .NEW YEARS DAY...Mostly cloudy. Highs in the lower 40s. $$