American River water temperature
American River, Watt Ave Brdg near Carmichael, California · River
The current water temperature at American River is 19.7 °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 164 data points since July 24, 2026.
Lowest recorded value: 16.4 °C on August 5, 2026 · highest value: 22.0 °C on August 25, 2026.
In September, temperatures have ranged between 17.9 °C and 21.7 °C.
Nearby waters
More measuring points: American River
Frequently asked questions
Can you swim at American River right now?
The current water temperature is 19.7 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at American River?
Currently 19.7 °C (updated continuously).
How warm is at American River in September?
In September, the water temperature recently averaged 19.7 °C.
When is the water warmest at American River?
Across the measurement record, July is on average the warmest month (19.8 °C).
