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



ARROYO VALLE - LANG CANYON (YLEC1)
Latitude: 37.56º NLongitude: 121.68º WElevation: 750 Feet
Location: Alameda County in CaliforniaBulletin Group: Central CoastRiver Group: South Bay
Issuance Time: Jul 11, 2025 at 8:07 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 | YLEC1
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Official 7 Day National Weather Service Forecast   (CAZ515)
rest of Today: Sunny. Highs in the upper 90s. Southwest winds 5 to 10 mph.

Tonight: Clear. Lows in the lower 60s. Southwest winds around 10 mph.

Saturday: Sunny. Highs around 90. West winds around 10 mph.

Saturday Night: Clear. Lows in the upper 50s. West winds 10 to 15 mph.

Sunday: Sunny. Highs in the upper 80s. West winds 10 to 15 mph.

Sunday Night: Mostly clear. Lows in the upper 50s.

Monday and Monday Night: Mostly clear. Highs in the upper 80s. Lows in the upper 50s.

Tuesday through Thursday: Mostly clear. Highs in the lower 80s. Lows in the upper 50s.