Gallatin River above Deer Creek, near Big Sky, Montana water temperature
Gallatin River above Deer Creek, near Big Sky, Montana · River
The current water temperature at Gallatin River above Deer Creek is 12.2 °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.
Measurement series & statistics
This measurement series includes 272 data points since July 5, 2026.
Lowest recorded value: 9.5 °C on August 31, 2026 · highest value: 19.9 °C on July 31, 2026.
In September, temperatures have ranged between 12.2 °C and 14.5 °C.
The current value is 1.1 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Gallatin River above Deer Creek right now?
The current water temperature is 12.2 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Gallatin River above Deer Creek?
Currently 12.2 °C (updated continuously).
How warm is at Gallatin River above Deer Creek in September?
In September, the water temperature recently averaged 13.3 °C.
When is the water warmest at Gallatin River above Deer Creek?
Across the measurement record, July is on average the warmest month (15.8 °C).
