Weather Warnings for Montana

Issued by the National Weather Service

Current watches, warnings, and advisories for Montana
Alerts Updated: April 1, 2026, 4:49 am  UTC


Winter Weather Advisory issued March 31 at 10:48PM MDT until April 3 at 12:00PM MDT by NWS Great Falls MT

Summary: * WHAT...Snow expected. Total snow accumulations between 4 and 8 inches at and below pass level, with higher amounts above pass level. Winds gusting as high as 35 mph. * WHERE...Big Belt, Bridger and Castle Mountains. * WHEN...From 9 AM Thursday to noon MDT Friday. * IMPACTS...Tire chains may be required for some vehicles if traveling through mountain passes. * ADDITIONAL DETAILS...The wet variety of snow may pose snow load impacts to infrastructure.
Severity:  Moderate    Effective:  March 31, 2026, 10:48 pm      Expires:  April 1, 2026, 6:30 pm
Area:  Big Belt, Bridger and Castle Mountains


Winter Weather Advisory issued March 31 at 10:48PM MDT until April 3 at 12:00PM MDT by NWS Great Falls MT

Summary: * WHAT...Snow expected. Total snow accumulations between 1 and 4 inches at lower elevations, with amounts approaching 6 inches at higher elevations. * WHERE...Snowy and Judith Mountains, Cascade County below 5000ft, Fergus County below 4500ft, and Judith Basin County and Judith Gap. * WHEN...From 3 PM Thursday to noon MDT Friday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Thursday evening and Friday morning commutes. * ADDITIONAL DETAILS...The wet variety of snow may pose snow load impacts to infrastructure where snow is most persistent Thursday night. Higher snow amounts approaching a foot are forecast for the Snowies.
Severity:  Moderate    Effective:  March 31, 2026, 10:48 pm      Expires:  April 1, 2026, 6:30 pm
Area:  Cascade County below 5000ft; Judith Basin County and Judith Gap; Fergus County below 4500ft; Snowy and Judith Mountains


Winter Storm Warning issued March 31 at 10:48PM MDT until April 3 at 12:00PM MDT by NWS Great Falls MT

Summary: * WHAT...Heavy snow expected. Total snow accumulations between 7 and 11 inches at and below pass level with higher amounts above pass level. * WHERE...Little Belt and Highwood Mountains and Gallatin and Madison County Mountains and Centennial Mountains. * WHEN...From 9 AM Thursday to noon MDT Friday. * IMPACTS...Travel could be very difficult and tire chains may be required for some vehicles. Those in the backcountry should ensure they are prepared for dangerous conditions. * ADDITIONAL DETAILS...The heavy and wet variety of snow may pose snow load impacts to infrastructure.
Severity:  Severe    Effective:  March 31, 2026, 10:48 pm      Expires:  April 1, 2026, 6:30 pm
Area:  Little Belt and Highwood Mountains; Gallatin and Madison County Mountains and Centennial Mountains


Winter Weather Advisory issued March 31 at 10:48PM MDT until April 3 at 6:00AM MDT by NWS Great Falls MT

Summary: * WHAT...Snow expected. Total snow accumulations between 4 and 8 inches. * WHERE...East Glacier Park Region Zone. * WHEN...From 6 AM Thursday to 6 AM MDT Friday. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...The wet variety of snow may pose snow load impacts to infrastructure.
Severity:  Moderate    Effective:  March 31, 2026, 10:48 pm      Expires:  April 1, 2026, 6:30 pm
Area:  East Glacier Park Region


Winter Weather Advisory issued March 31 at 10:48PM MDT until April 3 at 6:00AM MDT by NWS Great Falls MT

Summary: * WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. Winds gusting as high as 35 mph. * WHERE...Elkhorn and Boulder Mountains, Upper Blackfoot and MacDonald Pass, Southern Rocky Mountain Front, and Northwest Beaverhead County. * WHEN...From 6 AM Thursday to 6 AM MDT Friday. * IMPACTS...Tire chains may be required for some vehicles if traveling through mountain passes. * ADDITIONAL DETAILS...The wet variety of snow may pose snow load impacts to infrastructure.
Severity:  Moderate    Effective:  March 31, 2026, 10:48 pm      Expires:  April 1, 2026, 6:30 pm
Area:  Southern Rocky Mountain Front; Upper Blackfoot and MacDonald Pass; Elkhorn and Boulder Mountains; Northwest Beaverhead County


Winter Storm Watch issued March 31 at 8:34PM MDT until April 3 at 6:00PM MDT by NWS Billings MT

Summary: * WHAT...Heavy snow accumulations of greater than 12 inches are possible. Winds could gust as high as 40 mph. * WHERE...Absaroka/Beartooth Mountains and Crazy Mountains. * WHEN...From Thursday afternoon through Friday afternoon. * IMPACTS...Recreation in the high country may become difficult and hazardous. * ADDITIONAL DETAILS...The heaviest snow is expected Thursday night into Friday morning.
Severity:  Severe    Effective:  March 31, 2026, 8:34 pm      Expires:  April 1, 2026, 8:45 pm
Area:  Absaroka/Beartooth Mountains; Crazy Mountains


Winter Storm Watch issued March 31 at 8:34PM MDT until April 3 at 6:00PM MDT by NWS Billings MT

Summary: * WHAT...Heavy snow accumulations of greater than 12 inches are possible. Winds could gust as high as 40 mph. * WHERE...In Montana, Pryor/Northern Bighorn Mountains. In Wyoming, Northeast Bighorn Mountains. * WHEN...From Thursday evening through Friday afternoon. * IMPACTS...Travel on Highway 14 could be impacted. The hazardous conditions could impact the Thursday evening and Friday morning commutes. * ADDITIONAL DETAILS...The heaviest snow is expected Thursday night into Friday morning.
Severity:  Severe    Effective:  March 31, 2026, 8:34 pm      Expires:  April 1, 2026, 8:45 pm
Area:  Pryor/Northern Bighorn Mountains; Northeast Bighorn Mountains


Winter Weather Advisory issued March 31 at 8:34PM MDT until April 1 at 9:00AM MDT by NWS Billings MT

Summary: * WHAT...Mixed precipitation expected, including pockets of freezing rain. Total snow accumulations less than 1 inch. Total ice accumulations of a few hundredths possible. The greatest ice accumulations are forecast along Highway 310 through Belfry as well as along I-90 south and east of Billings. * WHERE...Portions of south central and southeast Montana. * WHEN...Until 9 AM MDT Wednesday. * IMPACTS...Travel will be impacted by poor visibility and slick or slushy conditions on roads. This includes I-90 from Crow Agency to Sheridan, and US-212 over Lame Deer Divide. * ADDITIONAL DETAILS...Potentially heavier ice accumulations are most likely along I-90 southeast of Billings, especially from Hardin to the Wyoming border.
Severity:  Moderate    Effective:  March 31, 2026, 8:34 pm      Expires:  April 1, 2026, 9:00 am
Area:  Northern Big Horn; Southern Rosebud; Southern Big Horn; Southeastern Carbon; Bighorn Canyon; Southwestern Yellowstone


Winter Weather Advisory issued March 31 at 8:34PM MDT until April 1 at 9:00AM MDT by NWS Billings MT

Summary: * WHAT...Snow occurring. Mixed precipitation expected, including freezing pockets of rain expected. Additional snow accumulations up to 3 inches. Total ice accumulations of a light glaze possible. * WHERE...Livingston Area, Melville Foothills, and Northern Sweet Grass. * WHEN...Until 9 AM MDT Wednesday. * IMPACTS...Travel will be difficult due to the snow and poor visibility. Roads will become icy or slushy into Wednesday morning. This includes I-90 from Big Timber to Livingston and Bozeman Pass. * ADDITIONAL DETAILS...Snowfall is expected into the late evening, before mixed precipitation is possible overnight. Light ice accumulations along I-90 eastbound could impact the Wednesday morning commute.
Severity:  Moderate    Effective:  March 31, 2026, 8:34 pm      Expires:  April 1, 2026, 9:00 am
Area:  Livingston Area; Northern Sweet Grass; Melville Foothills


Winter Weather Advisory issued March 31 at 8:34PM MDT until April 1 at 9:00AM MDT by NWS Billings MT

Summary: * WHAT...Mixed precipitation expected, including pockets of freezing rain. Additional snow accumulations less than one inch. Total ice accumulations of a light glaze possible. * WHERE...Beartooth Foothills and Red Lodge Foothills. * WHEN...Until 9 AM MDT Wednesday. * IMPACTS...Plan on slippery road conditions on bridges and overpasses. The hazardous conditions will impact the Wednesday morning commute. * ADDITIONAL DETAILS...Additional snowfall most likely closer to the foothills.
Severity:  Moderate    Effective:  March 31, 2026, 8:34 pm      Expires:  April 1, 2026, 9:00 am
Area:  Red Lodge Foothills; Beartooth Foothills


Winter Weather Advisory issued March 31 at 8:34PM MDT until April 1 at 9:00AM MDT by NWS Billings MT

Summary: * WHAT...Snow occurring. Mixed precipitation expected, including pockets of freezing rain. Additional snow accumulations up to 2 inches. Total ice accumulations of a few hundredths possible. * WHERE...Northern Carbon and Northern Stillwater. * WHEN...Until 9 AM MDT Wednesday. * IMPACTS...Plan on slippery road conditions on bridges and overpasses. The hazardous conditions will impact the Tuesday evening commute. * ADDITIONAL DETAILS...The greatest snow accumulations will fall north of I-90. The greatest ice accumulations will fall along I-90 and eastward.
Severity:  Moderate    Effective:  March 31, 2026, 8:34 pm      Expires:  April 1, 2026, 9:00 am
Area:  Northern Stillwater; Northern Carbon


Lake Wind Advisory issued March 31 at 12:25PM MDT until April 1 at 10:00AM MDT by NWS Glasgow MT

Summary: * WHAT...East southeast winds 15 to 25 mph with gusts up to 35 mph expected. * WHERE...Fort Peck Lake. * WHEN...From 10 PM this evening to 10 AM MDT Wednesday. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft.
Severity:  Moderate    Effective:  March 31, 2026, 12:25 pm      Expires:  April 1, 2026, 4:45 am
Area:  Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone


Winter Storm Watch issued March 31 at 10:34AM MDT until April 3 at 6:00AM MDT by NWS Missoula MT

Summary: * WHAT...Heavy snow possible. There is a chance of moderate to major winter weather impacts. Total snow accumulations between 6 and 12 inches possible for terrain above 5500 feet, including MacDonald Pass, Homestake Pass, Lost Trail Pass and Lolo Pass. 2 to 6 inches possible down to 3000 feet, including Butte, Seeley Lake and Anaconda. Winds could gust as high as 35 mph. * WHERE...Butte, Highway 12 Garrison to Elliston, I-90 East Missoula to Bearmouth, Georgetown Lake, Highway 93 Sula to Lost Trail Pass, Highway 83 Seeley Lake to Condon, Lolo Pass, MacDonald Pass, Homestake Pass, and Highway 200 Bonner to Greenough. * WHEN...From Thursday morning through late Thursday night. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. Avoid travel in the impacted areas if possible. Widespread closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Thursday morning and evening commutes, especially over higher passes. * ADDITIONAL DETAILS...Heavy, wet snow may cause power outages and tree damage.
Severity:  Severe    Effective:  March 31, 2026, 10:34 am      Expires:  April 1, 2026, 3:45 pm
Area:  Bitterroot/Sapphire Mountains; Butte/Blackfoot Region; Potomac/Seeley Lake Region