Weather WorldJohnstonville, CA 7-Day Night Weather Forecast
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Johnstonville, CA Weather Forecast
Johnstonville, CA Weather Forecast Date: 231 AM PDT Mon Sep 21 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 75 to 85. Light winds becoming east around 10 mph in the afternoon.
Tonight... Partly cloudy in the evening then clearing. Patchy smoke in the evening. Lows 41 to 51. West winds 10 to 15 mph.
Tuesday... Mostly sunny. Slight chance of showers in the afternoon. Highs 76 to 86. Light winds becoming west around 10 mph in the afternoon.
Tuesday Night... Partly cloudy with a slight chance of showers in the evening, then clear after midnight. Lows 40 to 50. West winds around 10 mph in the evening becoming light.
Wednesday... Sunny. Highs 79 to 89. Light winds becoming south around 10 mph in the afternoon.
Wednesday Night... Clear in the evening then becoming partly cloudy. Lows 41 to 51.
Thursday... Partly cloudy. Highs 77 to 87. Lows 40 to 50.
Thursday Night... Partly cloudy. Highs 77 to 87. Lows 40 to 50.
Friday... Partly cloudy. Highs 72 to 82. Lows 36 to 46.
Saturday... Partly cloudy. Highs 72 to 82. Lows 36 to 46.
POP = Probability of Precipitation
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