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HUASNA RIVER - ARROYO GRANDE (HSAC1)
Latitude:
35.08º N
Longitude:
120.37º W
Elevation:
1000 Feet
Location: San Luis Obispo County in CA
River Group: Southern California
Issuance Time: Jan 09 2026 at 2:06 PM PST
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 | HSAC1
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Location Photographs

ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ342)
Tonight: Clear. Lows in the 30s except the lower to mid 40s warmer hills. Northeast winds 15 to 25 mph.

Saturday: Sunny. Highs in the upper 50s to mid 60s. Northeast winds 15 to 25 mph.

Saturday Night: Partly cloudy. Lows in the mid 30s to mid 40s. Northeast winds 15 to 25 mph.

Sunday: Partly cloudy. Highs in the upper 50s and 60s. Northeast winds 15 to 25 mph.

Sunday Night: Partly cloudy in the evening then mostly clear. Lows in the mid 30s to lower 40s except the mid to upper 40s warmer hills. Northeast winds 15 to 25 mph.

Monday: Sunny. Highs in the 60s to around 70.

Monday Night: Clear. Lows in the upper 30s and 40s.

Tuesday: Sunny. Highs in the mid 60s to mid 70s.

Tuesday Night: Clear. Lows in the 40s to lower 50s.

Wednesday: Sunny. Highs in the mid 60s to mid 70s.

Wednesday Night: Clear. Lows in the mid 40s to mid 50s.

Thursday: Sunny. Highs in the upper 60s to mid 70s.

Thursday Night: Mostly clear. Lows in the mid 40s to mid 50s.

Friday: Sunny. Highs in the mid 60s to mid 70s.