Ponaganset River at South Foster, Rhode Island water temperature
Ponaganset River at South Foster, Rhode Island · River
The current water temperature at Ponaganset River at South Foster is 16.9 °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 167 data points since July 22, 2026.
Lowest recorded value: 16.9 °C on September 20, 2026 · highest value: 26.2 °C on August 8, 2026.
In September, temperatures have ranged between 16.9 °C and 22.8 °C.
The current value is 2.8 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Ponaganset River at South Foster right now?
The current water temperature is 16.9 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Ponaganset River at South Foster?
Currently 16.9 °C (updated continuously).
How warm is at Ponaganset River at South Foster in September?
In September, the water temperature recently averaged 19.7 °C.
When is the water warmest at Ponaganset River at South Foster?
Across the measurement record, August is on average the warmest month (21.7 °C).
