Nashua River, Water Street Bridge, water temperature
Nashua River, Water Street Bridge,, Clinton, Massachusetts · River
The current water temperature at Nashua River is 17.1 °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.
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Measurement series & statistics
This measurement series includes 389 data points since July 23, 2026.
Lowest recorded value: 16.1 °C on September 7, 2026 · highest value: 29.2 °C on August 7, 2026.
In September, temperatures have ranged between 16.1 °C and 23.6 °C.
The current value is 2.8 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Nashua River right now?
The current water temperature is 17.1 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Nashua River?
Currently 17.1 °C (updated continuously).
How warm is at Nashua River in September?
In September, the water temperature recently averaged 19.9 °C.
When is the water warmest at Nashua River?
Across the measurement record, August is on average the warmest month (22.5 °C).
