Au Sable River water temperature
Au Sable River, Mio, Michigan · River
The current water temperature at Au Sable River is 14.8 °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 435 data points since July 23, 2026.
Lowest recorded value: 14.8 °C on September 20, 2026 · highest value: 22.7 °C on July 31, 2026.
In September, temperatures have ranged between 14.8 °C and 19.3 °C.
The current value is 3.3 °C below the September average of this series.
Nearby waters
More measuring points: Au Sable River
Frequently asked questions
Can you swim at Au Sable River right now?
The current water temperature is 14.8 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Au Sable River?
Currently 14.8 °C (updated continuously).
How warm is at Au Sable River in September?
In September, the water temperature recently averaged 18.1 °C.
When is the water warmest at Au Sable River?
Across the measurement record, July is on average the warmest month (20.5 °C).
