National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service



TUOLUMNE RIVER - HETCH HETCHY RESERVOIR (HETC1)
Latitude: 37.95º NLongitude: 119.79º WElevation: 3870 Feet
Location: Tuolumne County in CaliforniaBulletin Group: San JoaquinRiver Group: San Joaquin
Issuance Time: Jul 14, 2025 at 8:56 AM PDT
Action/Monitor: N/A Minor Flood: N/A Moderate Flood: N/A Major Flood: N/A
Please Note:Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty.
Short-Range Peak Exceedance Plot   Product Info.   CSV Ensemble Files (Data in kcfs): Forecast Group | HETC1
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Official 7 Day National Weather Service Forecast   (CAZ323)
Today: Sunny. Highs 68 to 80. Southwest winds up to 5 mph increasing to 5 to 15 mph in the afternoon.

Tonight: Colder, clear. Lows 44 to 58. Southwest winds up to 10 mph shifting to the east after midnight.

Wednesday: Sunny. Highs 66 to 78. Southwest winds up to 10 mph.

Wednesday Night: Mostly clear. Lows 43 to 57. West winds up to 10 mph shifting to the southeast after midnight.

Thursday: Sunny. Highs 66 to 78. South winds up to 5 mph shifting to the southwest with gusts to around 25 mph in the afternoon.

Thursday Night: Mostly clear. Lows 43 to 57.

Friday: Sunny. Highs 65 to 79.

Friday Night: Mostly clear. Lows 44 to 58.

Saturday through Monday: Clear. Highs 65 to 79. Lows 41 to 56.