Monongahela River at Lock & Dam 8, at Point Marion, Pennsylvania water temperature
Monongahela River at Lock & Dam 8, at Point Marion, Pennsylvania · River
The current water temperature at Monongahela River at Lock & Dam 8 is 23.4 °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 91 data points since August 29, 2026.
Lowest recorded value: 22.8 °C on September 19, 2026 · highest value: 26.2 °C on September 3, 2026.
In September, temperatures have ranged between 22.8 °C and 26.2 °C.
The current value is 1.5 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Monongahela River at Lock & Dam 8 right now?
The current water temperature is 23.4 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Monongahela River at Lock & Dam 8?
Currently 23.4 °C (updated continuously).
How warm is at Monongahela River at Lock & Dam 8 in September?
In September, the water temperature recently averaged 24.9 °C.
