Tongue River water temperature

Tongue River, Brandenberg bridge near Ashland, Montana · River

The current water temperature at Tongue River is 13.4 °C (as of October 20, 2026, source: USGS).

A river can change temperature within hours — snowmelt, rain or power-plant operations show up immediately. That is why the measured value counts here, not an estimate.

13.4 °C

Measured: October 20, 2026 · continuously updated

💧 Water 13.4° · ☀️ Air 2.9° · high today 14.9°

Temperature trend of recent weeks

Measurement series & statistics

This measurement series includes 376 data points since September 7, 2026.

Lowest recorded value: 6.0 °C on October 16, 2026 · highest value: 25.9 °C on September 7, 2026.

Nearby waters

Tongue River, Miles City, Montana · 67.2 km away7.1 °C Tongue River, Tongue River Dam near Decker, Montana · 88.7 km away9.3 °C Powder River, Locate, Montana · 96.1 km away8.4 °C Tongue River, State Line near Decker, Montana · 104.1 km away4.8 °C Bighorn River, bridge, at St. Xavier, Montana · 125.9 km away10.2 °C

More measuring points: Tongue River

Tongue River Dam near Decker, Montana9.3 °C Miles City, Montana7.1 °C State Line near Decker, Montana4.8 °C

Frequently asked questions

Can you swim at Tongue River right now?
The current water temperature is 13.4 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Tongue River?
Currently 13.4 °C (updated continuously).

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