Marys River water temperature
Marys River, Philomath, Oregon · River
The current water temperature at Marys River is 15.7 °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 141 data points since July 23, 2026.
Lowest recorded value: 14.6 °C on September 4, 2026 · highest value: 22.2 °C on July 23, 2026.
In September, temperatures have ranged between 14.6 °C and 19.8 °C.
The current value is 0.5 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Marys River right now?
The current water temperature is 15.7 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Marys River?
Currently 15.7 °C (updated continuously).
How warm is at Marys River in September?
In September, the water temperature recently averaged 16.2 °C.
When is the water warmest at Marys River?
Across the measurement record, July is on average the warmest month (21.1 °C).
