Allegheny River water temperature
Allegheny River, Kinzua Dam at Big Bend, Pennsylvania · River
The current water temperature at Allegheny River is 20.4 °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 135 data points since July 23, 2026.
Lowest recorded value: 19.5 °C on August 24, 2026 · highest value: 24.0 °C on September 5, 2026.
In September, temperatures have ranged between 19.9 °C and 24.0 °C.
The current value is 0.7 °C below the September average of this series.
Nearby waters
More measuring points: Allegheny River
Frequently asked questions
Can you swim at Allegheny River right now?
The current water temperature is 20.4 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Allegheny River?
Currently 20.4 °C (updated continuously).
How warm is at Allegheny River in September?
In September, the water temperature recently averaged 21.1 °C.
When is the water warmest at Allegheny River?
Across the measurement record, September is on average the warmest month (21.1 °C).
