Tuolumne River above Early Intake near Mather, California water temperature

Tuolumne River above Early Intake near Mather, California · River

The current water temperature at Tuolumne River above Early Intake near Mather is 18.9 °C (as of September 1, 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.

18.9 °C

Measured: September 1, 2026 · continuously updated

💧 Water 18.9° · ☀️ Air 22.3°

Temperature trend of recent weeks

Measurement series & statistics

This measurement series includes 300 data points since July 9, 2026.

Lowest recorded value: 15.0 °C on August 30, 2026 · highest value: 23.1 °C on July 24, 2026.

Nearby waters

Tuolumne River below Early Intake near Mather, California · 2.0 km away17.3 °C Cherry C near Early Intake, California · 2.2 km away20.1 °C Cherry C below Dion River Holm Ph near Mather, California · 2.3 km away10.7 °C Cherry C below Valley Dam near Hetch Hetchy, California · 10.2 km away11.6 °C Eleanor C near Hetch Hetchy, California · 11.5 km away22.1 °C

Frequently asked questions

Can you swim at Tuolumne River above Early Intake near Mather right now?
The current water temperature is 18.9 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Tuolumne River above Early Intake near Mather?
Currently 18.9 °C (updated continuously).

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