Pilarcitos C below Stone Dam near Hillsborough, California water temperature
Pilarcitos C below Stone Dam near Hillsborough, California · River
The current water temperature at Pilarcitos C below Stone Dam near Hillsborough is 15.3 °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 130 data points since July 22, 2026.
Lowest recorded value: 14.2 °C on September 6, 2026 · highest value: 17.1 °C on July 24, 2026.
In September, temperatures have ranged between 14.2 °C and 17.0 °C.
The current value is 0.1 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Pilarcitos C below Stone Dam near Hillsborough right now?
The current water temperature is 15.3 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Pilarcitos C below Stone Dam near Hillsborough?
Currently 15.3 °C (updated continuously).
How warm is at Pilarcitos C below Stone Dam near Hillsborough in September?
In September, the water temperature recently averaged 15.4 °C.
When is the water warmest at Pilarcitos C below Stone Dam near Hillsborough?
Across the measurement record, August is on average the warmest month (15.9 °C).
