Live readings · updated daily
Water temperature in Montana
The latest readings from USGS real-time water sensors across Montana, warmest first. Snapshot updated August 21, 2026.
Warmest sensor reading right now
74°F23°C
USGS gauge Milk River at Nashua MT · as of 9 hrs ago
All reporting stations (warmest 50 of 241)
| Station | Water temp | Streamflow | Gage height | Observed |
|---|---|---|---|---|
| Milk River at Nashua MTUSGS gauge | 74°F23°C | 153 ft³/s | 1.82 ft | 9 hrs ago |
| Tongue R bl Brandenberg bridge nr Ashland MTUSGS gauge | 73°F23°C | 230 ft³/s | 2.94 ft | 9 hrs ago |
| Missouri River near Landusky MTUSGS gauge | 73°F23°C | 5,820 ft³/s | 13.52 ft | 8 hrs ago |
| Yellowstone River near Sidney MTUSGS gauge | 73°F23°C | 3,080 ft³/s | 1.49 ft | 9 hrs ago |
| Yellowstone River Fish Bypass Channel nr Intake MTUSGS gauge | 73°F23°C | 570 ft³/s | 14.44 ft | 9 hrs ago |
| Tongue River at Miles City, MTUSGS gauge | 72°F22°C | 72 ft³/s | 1.45 ft | 9 hrs ago |
| Flathead River near Polson MTUSGS gauge | 71°F22°C | 5,590 ft³/s | 4.68 ft | 8 hrs ago |
| Tongue River at Tongue R Dam nr Decker MTUSGS gauge | 71°F22°C | 211 ft³/s | 11.27 ft | 9 hrs ago |
| Flathead River at Perma MTUSGS gauge | 71°F22°C | 6,040 ft³/s | 7.84 ft | 9 hrs ago |
| Tongue River at State Line nr Decker MTUSGS gauge | 71°F22°C | 67 ft³/s | 2.09 ft | 9 hrs ago |
| Yellowstone River at Billings MTUSGS gauge | 71°F21°C | 2,820 ft³/s | 2.79 ft | 9 hrs ago |
| Jefferson River near Three Forks MTUSGS gauge | 70°F21°C | 444 ft³/s | 2.23 ft | 9 hrs ago |
| Marias River near Loma MTUSGS gauge | 70°F21°C | 703 ft³/s | 1.47 ft | 9 hrs ago |
| Missouri River at Toston MTUSGS gauge | 69°F21°C | 1,820 ft³/s | 3.15 ft | 9 hrs ago |
| Madison River bl Ennis Lake nr McAllister MTUSGS gauge | 68°F20°C | 1,200 ft³/s | 3.61 ft | 9 hrs ago |
| Bitterroot River near Missoula MTUSGS gauge | 67°F19°C | 705 ft³/s | 3.11 ft | 9 hrs ago |
| Clark Fork near Paradise, MTUSGS gauge | 67°F19°C | — | — | 9 hrs ago |
| Jefferson River near Twin Bridges, MTUSGS gauge | 67°F19°C | 497 ft³/s | 2.78 ft | 9 hrs ago |
| Big Hole R bl Hamilton Ditch nr Twin Bridges, MTUSGS gauge | 66°F19°C | 143 ft³/s | 0.83 ft | 9 hrs ago |
| Yellowstone River at Big Timber, MTUSGS gauge | 66°F19°C | — | — | 9 hrs ago |
| Jefferson River at Parsons Bdg nr Silver Star, MTUSGS gauge | 66°F19°C | 270 ft³/s | 3.03 ft | 9 hrs ago |
| Sun River at Simms MTUSGS gauge | 66°F19°C | 131 ft³/s | 2.53 ft | 9 hrs ago |
| Yellowstone River at Springdale, MTUSGS gauge | 66°F19°C | — | — | 9 hrs ago |
| Madison River near Norris MTUSGS gauge | 66°F19°C | 1,210 ft³/s | 4.03 ft | 8 hrs ago |
| Yellowstone River at Corwin Springs MTUSGS gauge | 66°F19°C | 2,090 ft³/s | 1.99 ft | 9 hrs ago |
| Big Hole River near Glen MTUSGS gauge | 65°F19°C | 235 ft³/s | 2.30 ft | 9 hrs ago |
| Missouri River near Wolf Point MTUSGS gauge | 65°F19°C | 7,130 ft³/s | 10.76 ft | 8 hrs ago |
| Madison River near West Yellowstone, MTUSGS gauge | 65°F18°C | 296 ft³/s | 1.63 ft | 9 hrs ago |
| Beaverhead River at Twin Bridges, MTUSGS gauge | 65°F18°C | 229 ft³/s | 2.51 ft | 9 hrs ago |
| Clark Fork ab Little Blackfoot R nr Garrison MTUSGS gauge | 65°F18°C | 116 ft³/s | 2.91 ft | 8 hrs ago |
| Yellowstone River near Livingston, MTUSGS gauge | 65°F18°C | 2,200 ft³/s | 0.67 ft | 9 hrs ago |
| Gallatin River at Logan MTUSGS gauge | 64°F18°C | 392 ft³/s | 4.63 ft | 9 hrs ago |
| Clark Fork above Missoula MTUSGS gauge | 64°F18°C | 1,170 ft³/s | 2.44 ft | 9 hrs ago |
| Ruby River near Twin Bridges MTUSGS gauge | 64°F18°C | 58 ft³/s | 2.36 ft | 8 hrs ago |
| Big Hole River near Melrose MTUSGS gauge | 64°F18°C | 260 ft³/s | 1.45 ft | 9 hrs ago |
| Clark Fork at Superior, MTUSGS gauge | 64°F18°C | — | — | 9 hrs ago |
| Dearborn River near Craig MTUSGS gauge | 64°F18°C | 37 ft³/s | 3.21 ft | 9 hrs ago |
| Blackfoot River near Bonner MTUSGS gauge | 63°F17°C | 662 ft³/s | 2.20 ft | 9 hrs ago |
| Missouri River bl Holter Dam nr Wolf Cr MTUSGS gauge | 63°F17°C | 3,490 ft³/s | 3.16 ft | 8 hrs ago |
| Clark Fork at Deer Lodge MTUSGS gauge | 63°F17°C | 105 ft³/s | 2.44 ft | 9 hrs ago |
| Powder River near Locate MTUSGS gauge | 63°F17°C | 4 ft³/s | 0.04 ft | 9 hrs ago |
| Madison River near Cameron MTUSGS gauge | 63°F17°C | 971 ft³/s | 2.20 ft | 9 hrs ago |
| Madison River at Ennis, MTUSGS gauge | 63°F17°C | 888 ft³/s | 4.43 ft | 9 hrs ago |
| Marias River at Highway 223 bridge near Chester,MTUSGS gauge | 62°F17°C | — | — | 8 hrs ago |
| Silver Bow Creek at Warm Springs MTUSGS gauge | 62°F17°C | 15 ft³/s | 1.78 ft | 9 hrs ago |
| Silver Bow Creek at Opportunity MTUSGS gauge | 62°F17°C | 10 ft³/s | 1.72 ft | 9 hrs ago |
| Smith River bl Eagle Cr nr Fort Logan MTUSGS gauge | 62°F17°C | 93 ft³/s | 3.00 ft | 9 hrs ago |
| Stillwater River near Absarokee, MTUSGS gauge | 62°F17°C | 537 ft³/s | 1.82 ft | 9 hrs ago |
| Big Hole River near Wise River MTUSGS gauge | 61°F16°C | — | — | 8 hrs ago |
| Missouri R at E Frazer Pump Plant nr Frazer MTUSGS gauge | 61°F16°C | — | 41.42 ft | 8 hrs ago |
Station links open the official monitoring page with charts and history.
About these readings
Readings come from USGS real-time monitoring stations — 76 sensors are currently reporting a water temperature in Montana. Each figure is a point measurement at one sensor, usually on a river or stream — it doesn’t describe a whole lake or shoreline, and coverage varies across the state. Data is provisional and can be revised by the USGS.
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Conditions are for general information only and can change quickly. Always judge the water in person and follow posted advisories and local guidance before swimming or paddling.