South Fork Sultan River near Sultan, Washington water temperature
South Fork Sultan River near Sultan, Washington · River
The current water temperature at South Fork Sultan River near Sultan is 12.5 °C (as of September 1, 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 202 data points since July 3, 2026.
Lowest recorded value: 10.6 °C on July 3, 2026 · highest value: 16.3 °C on July 22, 2026.
In September, temperatures have ranged between 12.5 °C and 13.0 °C.
The current value is 0.2 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at South Fork Sultan River near Sultan right now?
The current water temperature is 12.5 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at South Fork Sultan River near Sultan?
Currently 12.5 °C (updated continuously).
How warm is at South Fork Sultan River near Sultan in September?
In September, the water temperature recently averaged 12.7 °C.
When is the water warmest at South Fork Sultan River near Sultan?
Across the measurement record, August is on average the warmest month (13.3 °C).
