Au Sable River water temperature
Au Sable River, South Branch, Michigan · River
The current water temperature at Au Sable River is 17.0 °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 251 data points since July 23, 2026.
Lowest recorded value: 17.0 °C on September 21, 2026 · highest value: 24.0 °C on July 31, 2026.
In September, temperatures have ranged between 17.0 °C and 21.1 °C.
The current value is 3.0 °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 17.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Au Sable River?
Currently 17.0 °C (updated continuously).
How warm is at Au Sable River in September?
In September, the water temperature recently averaged 20.0 °C.
When is the water warmest at Au Sable River?
Across the measurement record, July is on average the warmest month (22.7 °C).
