American River A Fair Oaks, California water temperature
American River A Fair Oaks, California · River
The current water temperature at American River A Fair Oaks is 18.3 °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 363 data points since July 23, 2026.
Lowest recorded value: 15.5 °C on August 5, 2026 · highest value: 19.6 °C on August 1, 2026.
In September, temperatures have ranged between 18.1 °C and 19.1 °C.
The current value is 0.3 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at American River A Fair Oaks right now?
The current water temperature is 18.3 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at American River A Fair Oaks?
Currently 18.3 °C (updated continuously).
How warm is at American River A Fair Oaks in September?
In September, the water temperature recently averaged 18.6 °C.
When is the water warmest at American River A Fair Oaks?
Across the measurement record, July is on average the warmest month (18.7 °C).
