South Fork water temperature
South Fork, Senecaville Lake, Ohio · River
The current water temperature at South Fork 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 150 data points since July 23, 2026.
Lowest recorded value: 18.9 °C on August 25, 2026 · highest value: 26.7 °C on September 3, 2026.
In September, temperatures have ranged between 20.0 °C and 26.7 °C.
The current value is 3.1 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at South Fork 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 South Fork?
Currently 20.4 °C (updated continuously).
How warm is at South Fork in September?
In September, the water temperature recently averaged 23.5 °C.
When is the water warmest at South Fork?
Across the measurement record, September is on average the warmest month (23.5 °C).
