Penn Run water temperature
Penn Run, Mt Washington Rd near Louisville, Kentucky · River
The current water temperature at Penn Run is 23.3 °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 158 data points since July 23, 2026.
Lowest recorded value: 20.5 °C on August 29, 2026 · highest value: 26.9 °C on August 13, 2026.
In September, temperatures have ranged between 21.7 °C and 25.5 °C.
The current value is 0.5 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Penn Run right now?
The current water temperature is 23.3 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Penn Run?
Currently 23.3 °C (updated continuously).
How warm is at Penn Run in September?
In September, the water temperature recently averaged 23.8 °C.
When is the water warmest at Penn Run?
Across the measurement record, September is on average the warmest month (23.8 °C).
