Columbia River at the Dalles, Oregon water temperature
Columbia River at the Dalles, Oregon · River
The current water temperature at Columbia River at the Dalles is 19.9 °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 159 data points since July 23, 2026.
Lowest recorded value: 19.7 °C on September 19, 2026 · highest value: 22.5 °C on August 21, 2026.
In September, temperatures have ranged between 19.7 °C and 21.6 °C.
The current value is 0.9 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Columbia River at the Dalles right now?
The current water temperature is 19.9 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Columbia River at the Dalles?
Currently 19.9 °C (updated continuously).
How warm is at Columbia River at the Dalles in September?
In September, the water temperature recently averaged 20.8 °C.
When is the water warmest at Columbia River at the Dalles?
Across the measurement record, July is on average the warmest month (21.9 °C).
