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Calpine Reservoir, CA Weather Forecast
Calpine Reservoir, CA Weather Forecast Date: 231 PM PDT Fri Oct 16 2026
The area/counties/county of: Lassen, including the cities of: Portola, Susanville, Westwood, Sierraville, and Loyalton.or toggle through each period.
Tonight... Clear. Lows 32 to 42. Southeast winds around 10 mph with gusts up to 30 mph in the evening becoming light.
Saturday... Sunny. Highs 69 to 79. Light winds becoming southwest around 10 mph in the afternoon.
Saturday Night... Clear. Lows 30 to 40. Light winds.
Sunday... Sunny. Highs 68 to 78. Light winds becoming southwest around 10 mph in the afternoon.
Sunday Night... Clear. Lows 29 to 39. Southwest winds 10 to 15 mph.
Monday... Partly cloudy. Highs 61 to 71.
Monday Night... Partly cloudy in the evening then becoming mostly cloudy. Lows 27 to 37.
Tuesday... Mostly cloudy with a chance of rain. Highs 52 to 62. Lows 26 to 36.
Tuesday Night... Mostly cloudy with a chance of rain. Highs 52 to 62. Lows 26 to 36.
Wednesday... Mostly cloudy. Chance of rain and snow. Highs 52 to 62.
Wednesday Night... Mostly cloudy in the evening then becoming partly cloudy. Chance of rain. Lows 27 to 37.
Thursday... Partly cloudy with a slight chance of rain. Highs 51 to 61. Lows 25 to 35.
POP = Probability of Precipitation
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