N F Flathead River water temperature
N F Flathead River, Columbia Falls, Montana · River
The current water temperature at N F Flathead River is 12.8 °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 230 data points since July 23, 2026.
Lowest recorded value: 10.5 °C on September 14, 2026 · highest value: 18.4 °C on July 24, 2026.
In September, temperatures have ranged between 10.5 °C and 16.3 °C.
The current value is 0.4 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at N F Flathead River right now?
The current water temperature is 12.8 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at N F Flathead River?
Currently 12.8 °C (updated continuously).
How warm is at N F Flathead River in September?
In September, the water temperature recently averaged 13.2 °C.
When is the water warmest at N F Flathead River?
Across the measurement record, July is on average the warmest month (16.8 °C).
