Weather WorldJamison Lake, CA 7-Day Night Weather Forecast
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Jamison Lake, CA Weather Forecast
Jamison Lake, CA Weather Forecast Date: 231 AM PDT Fri Oct 09 2026
The area/counties/county of: Lassen, including the cities of: Portola, Susanville, Westwood, Sierraville, and Loyalton.or toggle through each period.
Today... Sunny. Highs 77 to 87. Light winds becoming southwest 10 to 15 mph with gusts up to 30 mph in the afternoon.
Tonight... Clear. Lows 37 to 47. Southwest winds 10 to 15 mph. Gusts up to 35 mph in the evening.
Saturday... Sunny in the morning then becoming partly cloudy. Highs 66 to 76. West winds around 10 mph with gusts up to 30 mph increasing to southwest 15 to 25 mph with gusts up to 45 mph in the afternoon.
Saturday Night... Partly cloudy. Slight chance of showers. Lows 29 to 39. West winds 10 to 15 mph with gusts up to 35 mph.
Sunday... Mostly cloudy with a chance of showers. Snow level 6500 to 7000 feet. Highs 48 to 58. Northeast winds 10 to 15 mph.
Sunday Night... Mostly cloudy with a chance of showers. Lows 23 to 33.
Columbus Day... Mostly cloudy with a chance of showers. Highs 48 to 58.
Monday Night... Mostly cloudy with a chance of showers in the evening, then partly cloudy with a slight chance of showers after midnight. Lows 23 to 33.
Tuesday... Clear. Highs 59 to 69. Lows 26 to 36.
Wednesday... Clear. Highs 59 to 69. Lows 26 to 36.
POP = Probability of Precipitation
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