Lake Siskiyou, CA 7-Day Weather Forecast
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Lake Siskiyou Weather Forecast


Lake Siskiyou, CA Weather Forecast Date: 239 PM PDT Sat Aug 08 2026
Weather forecast for Lake Siskiyou, CA
| Tonight Lo: 56°F Lo: 13°C |
Tonight... Clear. Patchy smoke well after midnight. Lows in the lower 50s to lower 60s. North winds 5 to 10 mph becoming around 5 mph well after midnight. |
| Sun Hi: 90°FHi: 32°C Lo: 56°F Lo: 13°C |
Sunday... Sunny. Areas of smoke in the morning. Patchy smoke in the afternoon. Highs in the mid 80s to mid 90s. Northeast winds around 5 mph shifting to the west in the afternoon. |
| Mon Hi: 90°FHi: 32°C Lo: 56°F Lo: 13°C |
Monday... Sunny. Highs in the mid 80s to mid 90s. North winds around 5 mph shifting to the southeast early in the afternoon, then shifting to the southwest late in the afternoon. |
| Tue Hi: 86°FHi: 30°C Lo: 56°F Lo: 13°C |
Tuesday... Clear. Highs in the lower 80s to lower 90s. Lows in the lower 50s to lower 60s. |
| Wed Hi: 86°FHi: 30°C Lo: 56°F Lo: 13°C |
Wednesday... Clear. Highs in the lower 80s to lower 90s. Lows in the lower 50s to lower 60s. |
| Wed Hi: 86°FHi: 30°C Lo: 50°F Lo: 10°C |
Wednesday... Clear. Highs in the lower 80s to lower 90s. Lows in the lower 50s to lower 60s. |
| Thu Hi: 86°FHi: 30°C Lo: 50°F Lo: 10°C |
Thursday... Mostly clear. Lows in the mid 40s to mid 50s. Highs in the lower 80s to lower 90s. |
| Fri Hi: 80°FHi: 27°C Lo: 50°F Lo: 10°C |
Friday... Partly cloudy. Slight chance of thunderstorms in the afternoon. Highs in the mid 70s to mid 80s. |
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