Similkameen River water temperature
Similkameen River, Nighthawk, Washington · River
The current water temperature at Similkameen River is 17.2 °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 218 data points since July 23, 2026.
Lowest recorded value: 15.5 °C on September 14, 2026 · highest value: 23.7 °C on July 23, 2026.
In September, temperatures have ranged between 15.5 °C and 19.1 °C.
Nearby waters
More measuring points: Similkameen River
Frequently asked questions
Can you swim at Similkameen River right now?
The current water temperature is 17.2 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Similkameen River?
Currently 17.2 °C (updated continuously).
How warm is at Similkameen River in September?
In September, the water temperature recently averaged 17.2 °C.
When is the water warmest at Similkameen River?
Across the measurement record, July is on average the warmest month (21.1 °C).
