Weather WorldO'Brien, CA 7-Day Night Weather Forecast
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O'Brien, CA Weather Forecast
O'Brien, CA Weather Forecast Date: 201 AM PDT Sun Sep 06 2026
The area/counties/county of: Shasta Lake Area & 1, including the city of Shasta Lake, Sims.or toggle through each period.
Today... Mostly sunny. A chance of rain showers and a slight chance of thunderstorms early in the afternoon. Highs 65 to 75. Light winds.
Tonight... Clear. Lows 45 to 55. North winds up to 10 mph.
Labor Day... Sunny, warmer. Highs 73 to 83. Northeast winds up to 10 mph with gusts to around 20 mph.
Monday Night... Clear. Lows 49 to 59. North winds up to 10 mph.
Tuesday... Mostly sunny. Highs 78 to 88. North winds up to 10 mph in the morning becoming light.
Tuesday Night... Mostly clear. Lows 52 to 62.
Wednesday... Mostly sunny. Warmer. Highs 84 to 94.
Wednesday Night... Mostly clear. Lows 57 to 67. Highs 85 to 95.
Thursday... Mostly clear. Lows 57 to 67. Highs 85 to 95.
Friday... Mostly clear. A slight chance of rain. Highs 77 to 87. Lows 55 to 65.
Friday Night... Mostly clear. A slight chance of rain. Highs 77 to 87. Lows 55 to 65.
POP = Probability of Precipitation
O'Brien Radar Loop
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