Sultan River water temperature
Sultan River, Powerplant near Sultan, Washington · River
The current water temperature at Sultan River is 13.2 °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 423 data points since July 23, 2026.
Lowest recorded value: 11.5 °C on August 13, 2026 · highest value: 15.4 °C on July 31, 2026.
In September, temperatures have ranged between 11.9 °C and 14.3 °C.
The current value is 0.2 °C above the September average of this series.
Nearby waters
More measuring points: Sultan River
Frequently asked questions
Can you swim at Sultan River right now?
The current water temperature is 13.2 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Sultan River?
Currently 13.2 °C (updated continuously).
How warm is at Sultan River in September?
In September, the water temperature recently averaged 13.0 °C.
When is the water warmest at Sultan River?
Across the measurement record, July is on average the warmest month (13.7 °C).
