Au Sable River water temperature
Au Sable River, Curtisville, Michigan · River
The current water temperature at Au Sable River is 16.1 °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 346 data points since July 23, 2026.
Lowest recorded value: 16.1 °C on September 21, 2026 · highest value: 23.0 °C on August 8, 2026.
In September, temperatures have ranged between 16.1 °C and 19.6 °C.
The current value is 2.8 °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 16.1 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Au Sable River?
Currently 16.1 °C (updated continuously).
How warm is at Au Sable River in September?
In September, the water temperature recently averaged 18.9 °C.
When is the water warmest at Au Sable River?
Across the measurement record, July is on average the warmest month (21.4 °C).
