Ashuelot River near Gilsum, New Hampshire water temperature
Ashuelot River near Gilsum, New Hampshire · River
The current water temperature at Ashuelot River near Gilsum is 13.2 °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 169 data points since July 22, 2026.
Lowest recorded value: 13.2 °C on September 20, 2026 · highest value: 25.1 °C on August 8, 2026.
In September, temperatures have ranged between 13.2 °C and 21.4 °C.
The current value is 4.8 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Ashuelot River near Gilsum right now?
The current water temperature is 13.2 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Ashuelot River near Gilsum?
Currently 13.2 °C (updated continuously).
How warm is at Ashuelot River near Gilsum in September?
In September, the water temperature recently averaged 18.0 °C.
When is the water warmest at Ashuelot River near Gilsum?
Across the measurement record, August is on average the warmest month (20.4 °C).
