Weather WorldJohnstonville, CA 7-Day Night Weather Forecast
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Johnstonville, CA Weather Forecast
Johnstonville, CA Weather Forecast Date: 553 PM PDT Wed Sep 16 2026
The area/counties/county of: Lassen, including the cities of: Portola, Susanville, Westwood, Sierraville, and Loyalton.or toggle through each period.
Rest of Tonight... Partly cloudy with a slight chance of showers in the evening, then clear after midnight. Lows 36 to 46. Southwest winds around 10 mph in the evening becoming light.
Thursday... Mostly sunny. Slight chance of showers and thunderstorms in the afternoon. Highs 65 to 75. Light winds becoming southwest around 10 mph in the afternoon.
Thursday Night... Clear. Lows 34 to 44. West winds around 10 mph in the evening becoming light.
Friday... Sunny. Highs 70 to 80. Light winds becoming north around 10 mph in the afternoon.
Friday Night... Clear. Lows 38 to 48. North winds around 10 mph in the evening becoming light.
Saturday... Sunny. Highs 73 to 83.
Saturday Night... Clear in the evening then becoming partly cloudy. Lows 42 to 52.
Sunday... Partly cloudy. Highs 75 to 85. Lows 43 to 53.
Sunday Night... Partly cloudy. Highs 75 to 85. Lows 43 to 53.
Monday... Clear. Highs 78 to 88. Lows 44 to 54.
Tuesday... Clear. Highs 78 to 88. Lows 44 to 54.
POP = Probability of Precipitation
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