Weather WorldMcCoy Flat Reservoir, CA 7-Day Night Weather Forecast
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McCoy Flat Reservoir, CA Weather Forecast
McCoy Flat Reservoir, CA Weather Forecast Date: 231 PM PDT Thu Sep 17 2026
The area/counties/county of: Lassen, including the cities of: Portola, Susanville, Westwood, Sierraville, and Loyalton.or toggle through each period.
Tonight... Clear. Lows 35 to 45. West winds around 10 mph in the evening becoming light.
Friday... Sunny. Highs 67 to 77. Light winds becoming north around 10 mph in the afternoon.
Friday Night... Clear. Lows 37 to 47. North winds around 10 mph in the evening becoming light.
Saturday... Sunny. Highs 73 to 83. Light winds.
Saturday Night... Clear. Lows 40 to 50. Light winds.
Sunday... Partly cloudy. Highs 75 to 85.
Sunday Night... Partly cloudy. Lows 43 to 53.
Monday... Partly cloudy in the morning then clearing. Highs 76 to 86.
Monday Night... Clear. Lows 42 to 52. Highs 76 to 86.
Tuesday... Clear. Lows 42 to 52. Highs 76 to 86.
Wednesday... Clear. Lows 42 to 52. Highs 76 to 86.
POP = Probability of Precipitation
McCoy Flat Reservoir Radar Loop
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