Coast Fork Willamette water temperature
Coast Fork Willamette, London, Oregon · River
The current water temperature at Coast Fork Willamette is 15.0 °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 138 data points since July 23, 2026.
Lowest recorded value: 12.6 °C on September 7, 2026 · highest value: 22.3 °C on July 23, 2026.
In September, temperatures have ranged between 12.6 °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 Coast Fork Willamette right now?
The current water temperature is 15.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Coast Fork Willamette?
Currently 15.0 °C (updated continuously).
How warm is at Coast Fork Willamette in September?
In September, the water temperature recently averaged 15.3 °C.
When is the water warmest at Coast Fork Willamette?
Across the measurement record, July is on average the warmest month (20.7 °C).
