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Castaic Lake, CA Weather Forecast
Castaic Lake, CA Weather Forecast Date: 1129 PM PDT Sun Sep 27 2026
The area/counties/county of: Santa Clarita Valley, including: Lake Castaic, Newhall, Santa Clarita, and Valencia.or toggle through each period.
Tonight... Mostly clear. Lows in the lower to mid 50s. South winds 10 to 20 mph in the evening.
Monday... Sunny. Highs in the lower to mid 80s. West winds 15 to 25 mph in the afternoon.
Monday Night... Clear. Lows in the mid to upper 50s. North winds 15 to 25 mph.
Tuesday... Sunny. Highs in the mid 80s to around 90. North winds 15 to 25 mph shifting to the northwest in the afternoon.
Tuesday Night... Clear. Lows around 60. North winds 10 to 20 mph.
Wednesday... Sunny. Highs around 90.
Wednesday Night... Clear. Lows in the lower 60s.
Thursday... Sunny. Highs in the lower to mid 90s.
Thursday Night... Clear. Lows in the mid 60s.
Friday... Sunny in the morning then partly cloudy. Highs in the mid 90s.
Friday Night... Clear. Lows in the mid 60s.
Saturday... Sunny. Highs in the mid 90s.
Saturday Night... Clear. Lows in the mid 60s.
POP = Probability of Precipitation
Castaic Lake Radar Loop
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