Madison River below Ennis Lake near McAllister, Montana water temperature

Madison River below Ennis Lake near McAllister, Montana · River

The current water temperature at Madison River below Ennis Lake near McAllister is 19.0 °C (as of September 1, 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.

19.0 °C

Measured: September 1, 2026 · continuously updated

💧 Water 19.0° · ☀️ Air 21.6° · high today 24.2°

Temperature trend of recent weeks

Measurement series & statistics

This measurement series includes 208 data points since July 3, 2026.

Lowest recorded value: 16.7 °C on July 3, 2026 · highest value: 23.3 °C on August 1, 2026.

Nearby waters

Madison River near Norris, Montana · 13.9 km away22.1 °C Madison River at Ennis, Montana · 17.3 km away19.0 °C Willow Creek near Harrison, Montana · 27.2 km away20.0 °C Madison River near Cameron, Montana · 30.0 km away17.3 °C Gallatin River above Deer Creek, near Big Sky, Montana · 39.4 km away15.5 °C

Frequently asked questions

Can you swim at Madison River below Ennis Lake near McAllister right now?
The current water temperature is 19.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Madison River below Ennis Lake near McAllister?
Currently 19.0 °C (updated continuously).

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