Expires:202512221800;;004264 FPUS55 KBYZ 220347 ZFPBYZ Zone Forecast Product for South Central and Southeast Montana National Weather Service Billings MT 846 PM MST Sun Dec 21 2025 Spot temperatures and probabilities of measurable precipitation are for the rest of tonight, Monday, Monday night, and Tuesday. MTZ063-221800- Judith Gap- Including the city of Judith Gap 846 PM MST Sun Dec 21 2025 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST MONDAY... .REST OF TONIGHT...Cloudy. Chance of snow showers late in the evening. Slight chance of rain and snow showers after 3 am. Lows in the upper 20s. South winds 5 to 15 mph. Chance of precipitation 30 percent. .MONDAY...Mostly cloudy. Chance of rain and slight chance of light freezing rain early in the morning, then slight chance of rain and snow late in the morning. Warmer. Highs in the mid 40s. West winds 10 to 20 mph. Chance of precipitation 40 percent. .MONDAY NIGHT...Mostly cloudy. A 20 percent chance of snow overnight. Lows in the mid 20s. Southeast winds 5 to 15 mph. .TUESDAY...Mostly cloudy. Highs in the mid 40s. South winds 5 to 10 mph. .TUESDAY NIGHT...Mostly cloudy. Lows around 30. South winds 5 to 10 mph. .WEDNESDAY...Partly sunny. Highs in the upper 40s. .WEDNESDAY NIGHT...Mostly cloudy. Slight chance of rain and snow in the evening, then chance of rain and snow overnight. Lows in the lower 20s. Chance of precipitation 40 percent. .CHRISTMAS DAY...Partly sunny. Chance of snow in the morning, then slight chance of snow in the afternoon. Colder. Highs in the upper 30s. Chance of precipitation 30 percent. .THURSDAY NIGHT...Mostly cloudy with a 20 percent chance of snow. Lows in the lower 20s. .FRIDAY...Mostly cloudy. Chance of snow in the morning, then slight chance of snow in the afternoon. Highs around 40. Chance of precipitation 30 percent. .FRIDAY NIGHT...Mostly cloudy. Lows in the lower 20s. .SATURDAY...Mostly sunny. Highs around 40. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 20s. .SUNDAY...Partly sunny. Highs in the mid 40s. $$