South Santiam River below Cascadia, Oregon water temperature
South Santiam River below Cascadia, Oregon · River
The current water temperature at South Santiam River below Cascadia is 12.7 °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 312 data points since July 23, 2026.
Lowest recorded value: 12.7 °C on September 20, 2026 · highest value: 22.8 °C on July 24, 2026.
In September, temperatures have ranged between 12.7 °C and 18.2 °C.
The current value is 1.9 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at South Santiam River below Cascadia right now?
The current water temperature is 12.7 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at South Santiam River below Cascadia?
Currently 12.7 °C (updated continuously).
How warm is at South Santiam River below Cascadia in September?
In September, the water temperature recently averaged 14.6 °C.
When is the water warmest at South Santiam River below Cascadia?
Across the measurement record, July is on average the warmest month (19.5 °C).
