Upper Twin Lake, CA 7-Day Night Weather Forecast
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Upper Twin Lake, CA Weather Forecast


Upper Twin Lake, CA Weather Forecast Date: 1132 AM PDT Sat Oct 24 2026
The area/counties/county of: Lassen Volcanic County Np, including the city of Lassen National Park.or toggle through each period.
Today... Sunny. Not as cool. Highs 49 to 59. Southeast winds up to 15 mph. Gusts up to 35 mph in the morning.
Tonight... Clear. Lows 28 to 36. Light winds.
Sunday... Partly cloudy in the morning then becoming mostly cloudy. Highs 47 to 57. Southwest winds up to 10 mph with gusts to around 20 mph.
Sunday Night... Mostly cloudy in the evening then clearing. Lows 28 to 34. South winds 10 to 20 mph with gusts to around 45 mph.
Monday... Mostly sunny. Highs 40 to 50. Southwest winds 10 to 15 mph. Gusts up to 45 mph Decreasing to 30 mph in the afternoon.
Monday Night... Mostly clear. Widespread frost. Lows 23 to 31.
Tuesday... Mostly sunny. Widespread frost. Highs 44 to 54.
Tuesday Night... Mostly clear. Lows 25 to 33. Highs 44 to 54.
Wednesday... Mostly clear. Lows 25 to 33. Highs 44 to 54.
Wednesday Night... Partly cloudy. Lows 25 to 31.
Thursday... Partly cloudy with a slight chance of snow. Highs 37 to 47.
Thursday Night... Mostly cloudy with a chance of snow. Lows 23 to 29. Highs 36 to 46.
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