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City of Portola, CAPortola, CA 7-Day Night Weather Forecast
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Portola, CA Weather Forecast
Portola, CA Weather Forecast Date: 231 AM PST Wed Nov 11 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 60 to 70. Light winds becoming south around 10 mph in the afternoon.
Tonight... Clear. Lows 26 to 36. Light winds. Gusts up to 30 mph in the evening.
Thursday... Partly cloudy. Highs 57 to 67. Light winds becoming south around 10 mph with gusts up to 30 mph in the afternoon.
Thursday Night... Mostly cloudy in the evening then clearing. Lows 28 to 38. South winds 10 to 15 mph with gusts up to 35 mph.
Friday... Chance of rain and snow. Snow level rising above 7000 feet. Highs 48 to 58. South winds 10 to 15 mph increasing to 15 to 25 mph in the afternoon. Gusts up to 45 mph.
Friday Night... Rain and snow in the evening, then chance of snow and rain after midnight. Lows 22 to 32.
Saturday... Mostly cloudy with a chance of snow and rain. Highs 42 to 52.
Saturday Night... Mostly cloudy. Lows 21 to 31.
Sunday... Mostly cloudy. Slight chance of rain and snow. Highs 45 to 55.
Sunday Night... Rain and snow likely in the evening, then rain and snow after midnight. Lows 22 to 32.
Monday... Snow and rain likely. Highs 40 to 50.
Monday Night... Mostly cloudy. Chance of snow and rain. Lows 17 to 27.
POP = Probability of Precipitation
Portola Radar Loop
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