Gallatin River water temperature
Gallatin River, Logan, Montana · River
The current water temperature at Gallatin River is 13.5 °C (as of September 21, 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 284 data points since July 23, 2026.
Lowest recorded value: 11.8 °C on September 9, 2026 · highest value: 25.2 °C on July 25, 2026.
In September, temperatures have ranged between 11.8 °C and 19.4 °C.
The current value is 2.5 °C below the September average of this series.
Nearby waters
More measuring points: Gallatin River
Frequently asked questions
Can you swim at Gallatin River right now?
The current water temperature is 13.5 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Gallatin River?
Currently 13.5 °C (updated continuously).
How warm is at Gallatin River in September?
In September, the water temperature recently averaged 16.0 °C.
When is the water warmest at Gallatin River?
Across the measurement record, July is on average the warmest month (20.9 °C).
