Similkameen River near Nighthawk, Washington water temperature
Similkameen River near Nighthawk, Washington · River
The current water temperature at Similkameen River near Nighthawk is 18.0 °C (as of September 1, 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 186 data points since July 3, 2026.
Lowest recorded value: 15.9 °C on August 30, 2026 · highest value: 23.7 °C on July 23, 2026.
In September, temperatures have ranged between 18.0 °C and 18.5 °C.
The current value is 0.2 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Similkameen River near Nighthawk right now?
The current water temperature is 18.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Similkameen River near Nighthawk?
Currently 18.0 °C (updated continuously).
How warm is at Similkameen River near Nighthawk in September?
In September, the water temperature recently averaged 18.2 °C.
When is the water warmest at Similkameen River near Nighthawk?
Across the measurement record, July is on average the warmest month (21.1 °C).
