Mohawk River at Lock 9 at Rotterdam Junction, New York water temperature
Mohawk River at Lock 9 at Rotterdam Junction, New York · River
The current water temperature at Mohawk River at Lock 9 at Rotterdam Junction is 21.0 °C (as of September 20, 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 446 data points since July 22, 2026.
Lowest recorded value: 21.0 °C on September 20, 2026 · highest value: 26.6 °C on July 27, 2026.
In September, temperatures have ranged between 21.0 °C and 24.0 °C.
The current value is 1.9 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Mohawk River at Lock 9 at Rotterdam Junction right now?
The current water temperature is 21.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Mohawk River at Lock 9 at Rotterdam Junction?
Currently 21.0 °C (updated continuously).
How warm is at Mohawk River at Lock 9 at Rotterdam Junction in September?
In September, the water temperature recently averaged 22.9 °C.
When is the water warmest at Mohawk River at Lock 9 at Rotterdam Junction?
Across the measurement record, August is on average the warmest month (24.8 °C).
