John Day River water temperature
John Day River, Mcdonald Ferry, Oregon · River
The current water temperature at John Day River is 19.4 °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 136 data points since July 23, 2026.
Lowest recorded value: 16.0 °C on August 30, 2026 · highest value: 26.1 °C on August 15, 2026.
In September, temperatures have ranged between 16.3 °C and 23.9 °C.
The current value is 0.2 °C below the September average of this series.
Nearby waters
More measuring points: John Day River
Frequently asked questions
Can you swim at John Day River right now?
The current water temperature is 19.4 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at John Day River?
Currently 19.4 °C (updated continuously).
How warm is at John Day River in September?
In September, the water temperature recently averaged 19.6 °C.
When is the water warmest at John Day River?
Across the measurement record, July is on average the warmest month (23.8 °C).
