Station Name: Sun River at Simms MT
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 3,550 feet

Nearest Address:
99 Simms Fairfield Rd
Simms, MT 59477
Cascade County

GPS Coordinates: 47.50162778, -111.9319139

Nearby Water Temperatures

Winter Weather Advisory issued April 21 at 2:20PM MDT until April 24 at 12:00PM MDT by NWS Great Falls MT

Effective: Tue April 21, 2026, 2:20 PM
Expires: Wed April 22, 2026, 6:15 AM

* WHAT...Wet snow expected. Total snow accumulations between 3 and 8 inches. Winds gusting as high as 40 mph. * WHERE...Portions of central, north central, and southwest Montana. * WHEN...From 6 PM Wednesday to noon MDT Friday. * IMPACTS...Expect difficult driving conditions due to slush or snow covered roadways. Falling and or blowing snow may significantly reduce visibility at times. Tire chains may be required for some vehicles if traveling through mountain passes. Those with outdoor plans should be prepared for dangerous outdoor conditions. * ADDITIONAL DETAILS...The wet snow may cause isolated instances of power outages and or tree damage.

Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. To see a graphical representation of the degree of stress on young livestock please visit our webpage and select Local Programs then Cold Air Advisory for Newborn Livestock.

Winter Weather Advisory issued April 21 at 11:56PM MDT until April 24 at 12:00PM MDT by NWS Great Falls MT

Effective: Tue April 21, 2026, 11:56 PM
Expires: Wed April 22, 2026, 3:00 PM

* WHAT...Wet snow expected. Total snow accumulations between 3 and 8 inches, with higher amounts over the mountain peaks. Winds gusting as high as 40 mph. * WHERE...Portions of central, north central, and southwest Montana. * WHEN...From 6 PM Wednesday to noon MDT Friday. * IMPACTS...Expect difficult driving conditions due to slush or snow covered roadways. Falling and or blowing snow may significantly reduce visibility at times. Tire chains may be required for some vehicles if traveling through mountain passes. Those with outdoor plans should be prepared for dangerous outdoor conditions. * ADDITIONAL DETAILS...The wet snow may cause isolated instances of power outages and or tree damage.

Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. To see a graphical representation of the degree of stress on young livestock please visit our webpage and select Local Programs then Cold Air Advisory for Newborn Livestock. Remember, a Winter Weather Advisory means that there is at least an 80% chance of minor impacts due to winter weather conditions during the advisory period.

Winter Storm Watch issued April 21 at 2:20PM MDT until April 23 at 6:00PM MDT by NWS Great Falls MT

Effective: Tue April 21, 2026, 2:20 PM
Expires: Wed April 22, 2026, 6:15 AM

* WHAT...Heavy, wet snow possible. Total snow accumulations between 5 and 11 inches, with higher amounts over the mountain peaks. Winds could gust as high as 50 mph, highest for northern areas. * WHERE...Big Belt, Bridger and Castle Mountains, Little Belt and Highwood Mountains, and Gallatin and Madison County Mountains and Centennial Mountains. * WHEN...From Wednesday evening through Thursday afternoon. * IMPACTS...Expect difficult driving conditions due to slush or snow covered roadways. Falling and or blowing snow may significantly reduce visibility below a quarter mile at times. Tire chains may be required for some vehicles if traveling through mountain passes. Those with outdoor plans should be prepared for dangerous outdoor conditions. * ADDITIONAL DETAILS...The heavy, wet snow may cause instances of power outages and or tree damage.

Remember, a Winter Storm Watch means that there is at least a 50% chance of impactful winter weather conditions during the watch period. To see a graphical representation of the degree of stress on young livestock please visit our webpage and select Local Programs then Cold Air Advisory for Newborn Livestock.

Winter Storm Watch issued April 21 at 11:56PM MDT until April 23 at 6:00PM MDT by NWS Great Falls MT

Effective: Tue April 21, 2026, 11:56 PM
Expires: Wed April 22, 2026, 3:00 PM

* WHAT...Heavy, wet snow possible. Total snow accumulations between 5 and 11 inches, with higher amounts over the mountain peaks. Winds could gust as high as 50 mph, highest for northern areas. * WHERE...Little Belt and Highwood Mountains. * WHEN...From Wednesday evening through Thursday afternoon. * IMPACTS...Expect difficult driving conditions due to slush or snow covered roadways. Falling and or blowing snow may significantly reduce visibility below a quarter mile at times. Tire chains may be required for some vehicles if traveling through mountain passes. Those with outdoor plans should be prepared for dangerous outdoor conditions. * ADDITIONAL DETAILS...The heavy, wet snow may cause instances of power outages and or tree damage.

Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. Remember, a Winter Storm Watch means that there is at least a 50% chance of impactful winter weather conditions during the watch period. To see a graphical representation of the degree of stress on young livestock please visit our webpage and select Local Programs then Cold Air Advisory for Newborn Livestock.

Winter Weather Advisory issued April 21 at 11:56PM MDT until April 23 at 6:00PM MDT by NWS Great Falls MT

Effective: Tue April 21, 2026, 11:56 PM
Expires: Wed April 22, 2026, 3:00 PM

* WHAT...Snow expected. Total snow accumulations between 5 and 9 inches, with higher amounts over the mountain peaks. Winds gusting as high as 50 mph. * WHERE...Big Belt, Bridger and Castle Mountains. * WHEN...From 6 PM Wednesday to 6 PM MDT Thursday. * IMPACTS...Tire chains may be required for some vehicles if traveling through mountain passes. Gusty winds could bring down tree branches.

Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. To see a graphical representation of the degree of stress on young livestock please visit our webpage and select Local Programs then Cold Air Advisory for Newborn Livestock.