Sf Boise River, Anderson Ranch Dam, Idaho · River
The current water temperature at Sf Boise River is 10.5 °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.
This measurement series includes 430 data points since July 23, 2026.
Lowest recorded value: 8.5 °C on July 23, 2026 · highest value: 12.0 °C on September 9, 2026.
In September, temperatures have ranged between 10.2 °C and 12.0 °C.
The current value is 0.3 °C below the September average of this series.
Can you swim at Sf Boise River right now?
The current water temperature is 10.5 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Sf Boise River?
Currently 10.5 °C (updated continuously).
How warm is at Sf Boise River in September?
In September, the water temperature recently averaged 10.8 °C.
When is the water warmest at Sf Boise River?
Across the measurement record, September is on average the warmest month (10.8 °C).