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O'Brien Lake, CA 7-Day Night Weather Forecast
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O'Brien Lake, CA Weather Forecast
O'Brien Lake, CA Weather Forecast Date: 1229 PM PDT Sun Aug 16 2026
The area/counties/county of: San Luis Obispo County Interior Valleys, including: Carrizo Plain, Creston, and Shandon.or toggle through each period.
Tonight... Partly cloudy in the evening then mostly cloudy. Lows in the 50s to lower 60s. West winds around 15 mph in the evening.
Monday... Mostly cloudy in the morning then partly cloudy. Highs in the upper 80s to mid 90s.
Monday Night... Partly cloudy. Lows in the upper 50s and 60s.
Tuesday... Partly cloudy in the morning then sunny. Highs 92 to 102.
Tuesday Night... Partly cloudy. Lows in the upper 50s and 60s.
Wednesday... Partly cloudy in the morning then sunny. Highs 93 to 103.
Wednesday Night... Mostly clear. Lows in the upper 50s to mid 60s except around 70 in the carrizo plain.
Thursday... Sunny. Highs 91 to 100.
Thursday Night... Mostly clear. Lows in the upper 50s and 60s.
Friday... Sunny. Highs in the upper 80s and 90s.
Friday Night... Mostly clear. Lows in the upper 50s to mid 60s.
Saturday... Sunny. Highs in the upper 80s to mid 90s.
Saturday Night... Clear. Lows in the upper 50s to mid 60s.
POP = Probability of Precipitation
O'Brien Lake Radar Loop
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