Expires:202512100300;;278251 FPUS55 KBYZ 091344 ZFPBYZ Zone Forecast Product for South Central and Southeast Montana National Weather Service Billings MT 643 AM MST Tue Dec 9 2025 Spot temperatures and probabilities of measurable precipitation are for today, tonight, and Wednesday. MTZ173-100300- Northeastern Yellowstone- Including the cities of Custer and Pompeys Pillar 643 AM MST Tue Dec 9 2025 ...HIGH WIND WARNING IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... .TODAY...Mostly cloudy. Isolated rain showers early in the morning, then scattered rain showers in the late morning and early afternoon. Windy. Highs in the lower 50s. West winds 15 to 30 mph with gusts to around 50 mph. Chance of precipitation 50 percent. .TONIGHT...Mostly cloudy. A 20 percent chance of snow after 3 am. Lows in the upper 20s. Southwest winds 5 to 10 mph. .WEDNESDAY...Rain, snow and light freezing rain in the morning, then chance of rain showers, light freezing rain and slight chance of snow showers in the afternoon. Little or no snow accumulation. Highs in the upper 40s. Southwest winds 5 to 10 mph. Chance of precipitation 90 percent. .WEDNESDAY NIGHT...Cloudy with a 50 percent chance of rain showers. Lows in the upper 30s. Northwest winds 5 to 15 mph. .THURSDAY...Chance of rain showers and slight chance of snow showers in the morning, then rain and snow showers likely in the afternoon. Highs around 50. West winds 5 to 15 mph. Chance of precipitation 70 percent. .THURSDAY NIGHT...Snow in the evening, then snow likely overnight. Much colder. Accumulations possible. Lows around 6. Chance of precipitation 80 percent. .FRIDAY...Snow in the morning, then snow likely in the afternoon. Cold. Snow may be heavy at times in the morning. Accumulations possible. Highs around 14. Chance of precipitation 80 percent. .FRIDAY NIGHT...Snow likely in the evening, then chance of snow overnight. Accumulations possible. Lows around 4. Chance of precipitation 60 percent. .SATURDAY...Cloudy with a 30 percent chance of snow in the morning, then partly sunny in the afternoon. Highs around 17. .SATURDAY NIGHT...Mostly cloudy. Lows around 3. .SUNDAY...Partly sunny. Not as cold. Highs in the upper 30s. .SUNDAY NIGHT...Mostly cloudy. Warmer. Lows around 20. .MONDAY...Partly sunny. Highs in the upper 30s. $$