Weather WorldLake O'Neill, CA 7-Day Weather Forecast
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Lake O'Neill Weather Forecast
Lake O'Neill, CA Weather Forecast Date: 1227 PM PDT Tue Sep 29 2026
Weather forecast for Lake O'Neill, CA
Tonight Lo: 58°F Lo: 14°C |
Tonight... Mostly clear this evening...Becoming partly cloudy. Lows 55 to 60. Areas of winds south to 10 mph this evening becoming light. |
Wed Hi: 87°FHi: 31°C Lo: 60°F Lo: 16°C |
Wednesday... Mostly sunny. Highs 84 to 89. Light winds becoming west 10 mph in the afternoon. |
Thu Hi: 90°FHi: 32°C Lo: 63°F Lo: 17°C |
Thursday... Partly cloudy in the morning...Becoming sunny. Highs 87 to 92 in the western valleys to 90 to 95 near the foothills. Light winds becoming west 10 mph in the afternoon. |
| Fri Hi: 98°FHi: 37°C Lo: 71°F Lo: 22°C |
Friday... Mostly sunny. Hot. Highs 95 to 100. |
| Sat Hi: 99°FHi: 37°C Lo: 72°F Lo: 22°C |
Saturday... Mostly sunny. Hot. Highs 96 to 101. |
| Sun Hi: 99°FHi: 37°C Lo: 72°F Lo: 22°C |
Sunday... Mostly sunny. Hot. Highs 97 to 101 in the western valleys to 93 to 98 near the foothills. |
| Mon Hi: 98°FHi: 37°C Lo: 71°F Lo: 22°C |
Monday... Mostly sunny. Hot. Highs 95 to 100 in the western valleys to 91 to 96 near the foothills. |
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