Russian River near Hopland, California water temperature
Russian River near Hopland, California · River
The current water temperature at Russian River near Hopland is 14.8 °C (as of September 20, 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 217 data points since July 22, 2026.
Lowest recorded value: 13.1 °C on September 4, 2026 · highest value: 17.3 °C on August 2, 2026.
In September, temperatures have ranged between 13.1 °C and 16.4 °C.
Nearby waters
Frequently asked questions
Can you swim at Russian River near Hopland right now?
The current water temperature is 14.8 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Russian River near Hopland?
Currently 14.8 °C (updated continuously).
How warm is at Russian River near Hopland in September?
In September, the water temperature recently averaged 14.8 °C.
When is the water warmest at Russian River near Hopland?
Across the measurement record, July is on average the warmest month (15.9 °C).
