7-Day Zone Forecast for Gallatin Valley (Text-Only)
NWS Forecast for: Gallatin Valley
Issued by: National Weather Service Great Falls, MT
Last Update: 647 PM MDT Mon Mar 9 2026




Rest Of Tonight: Colder. Mostly cloudy. A 20 percent chance of snow early in the evening. Lows in the lower 20s. Northwest winds 5 to 15 mph with gusts to around 40 mph shifting to the north up to 5 mph after midnight.

Tuesday: Partly sunny with a 20 percent chance of snow. Highs in the upper 30s. West winds up to 5 mph with gusts to around 20 mph increasing to 10 to 20 mph with gusts to around 35 mph in the afternoon.

Tuesday Night: Mostly cloudy in the evening then clearing. Lows around 16. West winds 5 to 15 mph. Gusts up to 30 mph in the evening.

Wednesday: Windy. Mostly sunny. Highs in the mid 40s. South winds 5 to 15 mph increasing to southwest 20 to 30 mph with gusts to around 50 mph in the afternoon.

Wednesday Night: Windy. Not as cool. Mostly cloudy. Slight chance of rain and snow in the evening, then chance of rain and snow after midnight. Lows in the upper 30s. Southwest winds 20 to 30 mph. Gusts up to 50 mph increasing to 60 mph after midnight. Chance of precipitation 40 percent.

Thursday: Very windy. Mostly cloudy. Chance of rain and snow in the morning, then chance of rain in the afternoon. Highs in the mid 50s. Chance of precipitation 50 percent.

Thursday Night And Friday: Windy. Cloudy with a 50 percent chance of rain. Lows in the lower 40s. Highs in the upper 50s.

Friday Night: Breezy. Mostly cloudy with a 50 percent chance of rain. Lows in the lower 40s.

Saturday: Windy. Rain likely. Highs in the mid 50s. Chance of rain 70 percent.

Saturday Night: Breezy, colder. Mostly cloudy. Chance of snow and rain in the evening, then chance of snow after midnight. Lows in the mid 20s. Chance of precipitation 50 percent.

Sunday And Sunday Night: Cloudy with a 50 percent chance of snow. Highs in the mid 40s. Lows in the lower 30s.

Monday: Cloudy. Chance of snow and rain in the morning, then chance of rain in the afternoon. Highs in the mid 50s. Chance of precipitation 50 percent.







Zone Forecast: Gallatin Valley

Visit your local NWS office at: https://www.weather.gov/tfx