Skagit River at Marblemount, Washington water temperature
Skagit River at Marblemount, Washington · River
The current water temperature at Skagit River at Marblemount is 12.7 °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 502 data points since July 3, 2026.
Lowest recorded value: 10.2 °C on July 13, 2026 · highest value: 14.7 °C on August 19, 2026.
In September, temperatures have ranged between 12.7 °C and 13.5 °C.
The current value is 0.4 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Skagit River at Marblemount 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 Skagit River at Marblemount?
Currently 12.7 °C (updated continuously).
How warm is at Skagit River at Marblemount in September?
In September, the water temperature recently averaged 13.1 °C.
When is the water warmest at Skagit River at Marblemount?
Across the measurement record, September is on average the warmest month (13.1 °C).
