Isinglass River water temperature
Isinglass River, Rochester Neck Rd, near Dover, New Hampshire · River
The current water temperature at Isinglass River is 14.0 °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 101 data points since August 26, 2026.
Lowest recorded value: 14.0 °C on September 21, 2026 · highest value: 28.4 °C on August 31, 2026.
In September, temperatures have ranged between 14.0 °C and 21.0 °C.
The current value is 4.1 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Isinglass River right now?
The current water temperature is 14.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Isinglass River?
Currently 14.0 °C (updated continuously).
How warm is at Isinglass River in September?
In September, the water temperature recently averaged 18.1 °C.
