Weather WorldPosey Lake, CA 7-Day Night Weather Forecast
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Posey Lake, CA Weather Forecast
Posey Lake, CA Weather Forecast Date: 231 AM PDT Fri Oct 02 2026
The area/counties/county of: Lassen, including the cities of: Portola, Susanville, Westwood, Sierraville, and Loyalton.or toggle through each period.
Today... Mostly cloudy in the morning then becoming partly cloudy. Highs 79 to 89. Light winds becoming west around 10 mph in the afternoon.
Tonight... Mostly cloudy in the evening then becoming partly cloudy. Lows 42 to 52. West winds around 10 mph in the evening becoming light.
Saturday... Mostly cloudy in the morning then clearing. Highs 80 to 90. Light winds becoming south around 10 mph in the afternoon.
Saturday Night... Clear. Lows 44 to 54. Light winds.
Sunday... Sunny in the morning then becoming partly cloudy. Highs 81 to 91. Light winds.
Sunday Night... Mostly cloudy. Lows 45 to 55.
Monday... Clear. Highs 78 to 88. Lows 43 to 53.
Tuesday... Clear. Highs 78 to 88. Lows 43 to 53.
Wednesday... Clear. Highs 78 to 88. Lows 43 to 53.
POP = Probability of Precipitation
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