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 Sun Feb 22 2026
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Today: At higher elevations, rain and snow likely in the morning, then rain likely in the afternoon. At lower elevations, a chance of rain early in the morning, then rain likely late in the morning. A chance of rain in the afternoon. Not as cool. Highs 36 to 50 higher elevations...46 to 54 lower elevations. Little or no snow accumulation. Prevailing southeast winds 5 to 15 mph with gusts to around 40 mph.

Tonight: Mostly cloudy. A chance of rain in the evening, then a slight chance of rain after midnight. Lows 34 to 47. Prevailing south winds up to 10 mph with gusts to around 30 mph.

Monday: Mostly cloudy with a chance of rain. Not as cool. Highs 42 to 57 higher elevations...53 to 61 lower elevations. Prevailing west winds up to 10 mph shifting to the southeast in the afternoon.

Monday Night: Rain. Lows 39 to 53. Prevailing south winds up to 15 mph with gusts to around 30 mph.

Tuesday: Rain. Highs 40 to 54 higher elevations...52 to 58 lower elevations. Prevailing south winds 5 to 15 mph with gusts to around 35 mph.

Tuesday Night: Rain likely. Lows 37 to 52.

Wednesday: Mostly cloudy with a chance of rain. Not as cool. Highs 48 to 63.

Wednesday Night: Mostly cloudy with a chance of rain. Lows 38 to 52.

Thursday And Thursday Night: Mostly cloudy with a slight chance of rain. Highs 52 to 67. Lows 38 to 53.

Friday: Partly cloudy with a slight chance of rain. Warmer. Highs 55 to 70.

Friday Night And Saturday: Partly cloudy with a slight chance of rain. Lows 42 to 54. Highs 54 to 69.







Zone Forecast: Mountains Southwestern Shasta County to Western Colusa County

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