Napa River near Napa, California water temperature

Napa River near Napa, California · River

The current water temperature at Napa River near Napa is 0.0 °C (as of August 4, 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.

0.0 °C

Measured: August 4, 2026 · continuously updated

💧 Water 0.0° · ☀️ Air 14.6° · high today 20.0°

Temperature trend of recent weeks

Measurement series & statistics

This measurement series includes 68 data points since July 15, 2026.

Lowest recorded value: 0.0 °C on July 15, 2026 · highest value: 0.0 °C on July 15, 2026.

Nearby waters

Sonoma Creek A Kenwood, California · 23.3 km away10.4 °C First Mallard Branch near Fairfield, California · 30.5 km away20.3 °C Carquinez Strait A Carquinez Branch near Crockett, California · 34.8 km away20.3 °C Nurse Slough A Bradmoor Island near Birds Landing, California · 38.1 km away19.9 °C Denverton Slough A Gate 4 near Fairfield, California · 38.8 km away24.1 °C

Frequently asked questions

Can you swim at Napa River near Napa right now?
The current water temperature is 0.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Napa River near Napa?
Currently 0.0 °C (updated continuously).

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