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 February 18 at 3:12PM MST until February 18 at 11:00PM MST by NWS Great Falls MT

Effective: Wed February 18, 2026, 3:12 PM
Expires: Wed February 18, 2026, 11:00 PM

* WHAT...Snow. Additional snow accumulations between 1 and 3 inches. * WHERE...Portions of central and north central Montana. * WHEN...Until 11 PM MST this evening. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Wednesday evening commute.

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.

Cold Weather Advisory issued February 18 at 11:32AM MST until February 19 at 12:00PM MST by NWS Great Falls MT

Effective: Wed February 18, 2026, 11:32 AM
Expires: Thu February 19, 2026, 5:00 AM

* WHAT...Very cold wind chills as low as 30 below. * WHERE...Southern Rocky Mountain Front and adjacent foothills and plains, Eastern Pondera and Eastern Teton Counties, Hill County, Northern Blaine County, Western and Central Chouteau County, Bears Paw Mountains and Southern Blaine, Cascade County below 5000ft, Upper Blackfoot and MacDonald Pass, and Gates of the Mountains. * WHEN...Until noon MST Thursday. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 15 minutes.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.

Cold Weather Advisory issued February 18 at 11:26PM MST until February 19 at 12:00PM MST by NWS Great Falls MT

Effective: Wed February 18, 2026, 11:26 PM
Expires: Thu February 19, 2026, 12:00 PM

* WHAT...Very cold wind chills as low as 35 below. * WHERE...Southern Rocky Mountain Front and adjacent foothills and plains, Eastern Pondera and Eastern Teton Counties, Hill County, Northern Blaine County, Western and Central Chouteau County, Bears Paw Mountains and Southern Blaine, Cascade County below 5000ft, Upper Blackfoot and MacDonald Pass, and Gates of the Mountains. * WHEN...Until noon MST Thursday. * IMPACTS...The dangerously cold wind chills as low as 35 below zero could cause frostbite on exposed skin in as little as 10 minutes.

Dress in layers including a hat, face mask, and gloves if you must go outside.

Winter Weather Advisory issued February 18 at 3:12PM MST until February 19 at 3:00AM MST by NWS Great Falls MT

Effective: Wed February 18, 2026, 3:12 PM
Expires: Thu February 19, 2026, 3:00 AM

* WHAT...Snow. Additional snow accumulations up to four inches. * WHERE...Little Belt and Highwood Mountains and Meagher County Valleys. * WHEN...Until 3 AM MST Thursday. * IMPACTS...Plan on slippery road conditions.

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 February 18 at 3:12PM MST until February 18 at 11:00PM MST by NWS Great Falls MT

Effective: Wed February 18, 2026, 3:12 PM
Expires: Wed February 18, 2026, 11:00 PM

* WHAT...Snow. Additional snow accumulations up to three inches. * WHERE...The Interstate 90 Corridor between Bozeman and Whitehall, The Madison and Beaverhead River Valleys, and Big Belt, Bridger and Castle Mountains. * WHEN...Until 11 PM MST this evening. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Wednesday evening commute.

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.