| NWS Forecast for: Mountains Southwestern Shasta County to Western Colusa County Issued by: National Weather Service Sacramento, CA Last Update: 122 PM PST Sat Dec 27 2025 |  |
| Tonight: Clear in the evening then becoming partly cloudy. In the valleys, patchy fog after midnight. Lows 29 to 41. Prevailing northwest winds up to 10 mph. Sunday: In the valleys, patchy fog in the morning. Mostly sunny. Not as cool. Highs 40 to 54 higher elevations...around 55 lower elevations. Prevailing north winds up to 10 mph. Sunday Night: Clear. In the valleys, patchy fog after midnight. Lows 33 to 43. Prevailing northwest winds up to 15 mph. Monday: In the valleys, patchy fog in the morning. Sunny. Not as cool. Highs 47 to 61. Prevailing north winds up to 10 mph. Monday Night: Clear. In the valleys, patchy fog after midnight. Lows 36 to 46. Prevailing northwest winds up to 10 mph. Tuesday: Sunny. Patchy fog. Highs 48 to 62. Tuesday Night: Clear. Lows 37 to 45. Wednesday: Mostly sunny. Highs 48 to 62. Wednesday Night And New Years Day: Mostly cloudy with a chance of rain. Lows 37 to 45. Highs 41 to 56. Thursday Night: Rain likely. Lows 35 to 45. Friday: Mostly cloudy with a chance of rain and snow likely. Highs 40 to 55. Friday Night And Saturday: Mostly cloudy with a chance of rain and snow. Lows 33 to 43. Highs 40 to 55. | |
| Zone Forecast: Mountains Southwestern Shasta County to Western Colusa County | |
Visit your local NWS office at: https://www.weather.gov/sto |