Weather WorldUpper Lake, CA 7-Day Night Weather Forecast
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Upper Lake, CA Weather Forecast
Upper Lake, CA Weather Forecast Date: 136 PM PDT Fri Sep 18 2026
The area/counties/county of: Western Lake, including the cities of: Finley, Knobcone Camp, Lakeport, Soda Bay, Lucerne, Nice, and Saratoga Springs.or toggle through each period.
Tonight... Clear. Lows 52 to 62. Northwest wind up to 10 mph.
Saturday... Mostly sunny. Highs 83 to 93. North wind around 5 mph shifting to the southwest in the afternoon.
Saturday Night... Partly cloudy in the evening then becoming mostly cloudy. Lows 54 to 64. Northwest wind around 10 mph.
Sunday... Mostly cloudy. Highs 81 to 91. Southeast wind around 5 mph.
Sunday Night... Partly cloudy. Lows 55 to 65. Northwest wind around 5 mph.
Monday... Sunny. Highs 83 to 93. Southwest wind around 5 mph.
Monday Night... Mostly clear. Lows 56 to 66.
Tuesday... Sunny. Highs 85 to 95.
Tuesday Night... Mostly clear. Lows 58 to 68. Highs 85 to 97.
Wednesday... Mostly clear. Lows 58 to 68. Highs 85 to 97.
Thursday... Mostly clear. Lows 58 to 68. Highs 85 to 97.
Thursday Night... Partly cloudy. Lows 57 to 67. Highs 81 to 96.
POP = Probability of Precipitation
Upper Lake Radar Loop
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