Expires:202512291100;;414537 FPUS55 KTFX 290417 ZFPTFX Zone Forecast Product for Central and Southwest Montana National Weather Service Great Falls MT 916 PM MST Sun Dec 28 2025 Spot temperatures and probabilities of measurable precipitation are for the rest of tonight, Monday, Monday night, and Tuesday. MTZ324-291100- Missouri Headwaters- Including the cities of Harrison, Three Forks, Willow Creek, Pony, and Whitehall 916 PM MST Sun Dec 28 2025 .REST OF TONIGHT...Mostly cloudy late in the evening then becoming partly cloudy. Near steady temperature around 13. Southwest winds 5 to 10 mph with gusts to around 25 mph. .MONDAY...Sunny. Highs in the mid 30s. Southwest winds up to 10 mph with gusts to around 25 mph. .MONDAY NIGHT...Not as cold. Mostly clear in the evening then becoming mostly cloudy. Near steady temperature in the mid 20s. Southwest winds up to 10 mph. .TUESDAY...Partly sunny in the morning then clearing. Highs in the lower 40s. Southwest winds up to 10 mph. .TUESDAY NIGHT...Partly cloudy. Lows in the mid 20s. Southwest winds up to 10 mph with gusts to around 25 mph. .WEDNESDAY...Sunny. Highs in the mid 40s. .WEDNESDAY NIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 20s. .NEW YEARS DAY THROUGH SUNDAY...Mostly cloudy. Highs in the mid 40s. Lows in the upper 20s. $$