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Posey 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 Sat Aug 08 2026
The area/counties/county of: Lassen, including the cities of: Portola, Susanville, Westwood, Sierraville, and Loyalton.or toggle through each period.
Today... Sunny. Haze and patchy smoke in the morning. Slight chance of showers in the afternoon. Highs 93 to 103. Light winds becoming west around 10 mph in the afternoon.
Tonight... Clear. Smoke and haze after midnight. Lows 53 to 63. West winds 10 to 15 mph.
Sunday... Sunny. Areas of smoke. Highs 93 to 103. Light winds becoming west 10 to 15 mph in the afternoon.
Sunday Night... Clear. Lows 51 to 61. West winds 10 to 15 mph. Gusts up to 30 mph in the evening.
Monday... Sunny. Highs 91 to 101. Light winds becoming southwest around 10 mph in the afternoon.
Monday Night... Clear. Lows 48 to 58.
Tuesday... Clear. Highs 89 to 99. Lows 47 to 57.
Wednesday... Clear. Highs 89 to 99. Lows 47 to 57.
Wednesday Night... Partly cloudy. Lows 48 to 58. Highs 83 to 93.
Thursday... Partly cloudy. Lows 48 to 58. Highs 83 to 93.
POP = Probability of Precipitation
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