Weather WorldRosasco Lake, CA 7-Day Night Weather Forecast
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Rosasco Lake, CA Weather Forecast
Rosasco Lake, CA Weather Forecast Date: 201 AM PDT Thu Oct 01 2026
The area/counties/county of: Sierra (Cal, including the city of Twain Harte, Arnold.or toggle through each period.
Today... Sunny. Patchy smoke through the day. Haze in the late morning and afternoon. Highs 72 to 82. Southeast winds up to 10 mph shifting to the southwest in the afternoon.
Tonight... Mostly clear. Patchy smoke in the evening, then areas of smoke after midnight. Lows 48 to 58. Southeast winds up to 10 mph.
Friday... Mostly sunny in the morning then becoming mostly cloudy. Patchy smoke in the morning. Highs 70 to 80. Southeast winds up to 10 mph shifting to the southwest in the afternoon.
Friday Night... Mostly cloudy in the evening then becoming partly cloudy. Lows 48 to 58. North winds up to 10 mph shifting to the east after midnight.
Saturday... Mostly sunny. Highs 72 to 82. East winds up to 10 mph in the morning becoming light.
Saturday Night... Mostly clear. Lows 48 to 58.
Sunday... Partly cloudy. Highs 70 to 80.
Sunday Night... Partly cloudy. Lows 46 to 56.
Monday... Mostly sunny. Highs 68 to 78.
Monday Night... Clear. Lows 46 to 56. Highs 69 to 79.
Tuesday... Clear. Lows 46 to 56. Highs 69 to 79.
POP = Probability of Precipitation
Rosasco Lake Radar Loop
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