7-Day Zone Forecast for Mountains Southwestern Shasta County to Western Colusa County (Text-Only)
NWS Forecast for: Mountains Southwestern Shasta County to Western Colusa County
Issued by: National Weather Service Sacramento, CA
Last Update: 700 AM PST Wed Feb 25 2026
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Today: Mostly cloudy. A slight chance of rain early in the morning. Warmer. Highs 46 to 60 higher elevations...around 61 lower elevations. Light winds becoming south up to 10 mph in the afternoon.

Tonight: Mostly cloudy in the evening then becoming partly cloudy. Lows 37 to 51. Light winds.

Thursday: Partly cloudy in the morning then clearing. Warmer. Highs 51 to 65 higher elevations...around 66 lower elevations. Light winds.

Thursday Night: Partly cloudy in the evening then becoming mostly cloudy. Lows 43 to 55. Prevailing northwest winds up to 10 mph.

Friday: Partly cloudy in the morning then clearing. Warmer. Highs 55 to 69 higher elevations...around 70 lower elevations. Prevailing west winds up to 10 mph in the morning becoming light.

Friday Night: Mostly cloudy. Lows 45 to 57.

Saturday: Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms. Highs 52 to 67.

Saturday Night: Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms. Colder. Lows 37 to 51.

Sunday: Mostly cloudy with a chance of rain. Highs 48 to 63.

Sunday Night: Partly cloudy with a chance of rain. Lows 37 to 51.

Monday: Partly cloudy with a slight chance of rain. Warmer. Highs 53 to 68.

Monday Night: Clear. Lows 40 to 52.

Tuesday: Mostly sunny. Warmer. Highs 56 to 71.







Zone Forecast: Mountains Southwestern Shasta County to Western Colusa County

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