| NWS Forecast for: Mountains Southwestern Shasta County to Western Colusa County Issued by: National Weather Service Sacramento, CA Last Update: 122 AM PST Sun Jan 18 2026 |  |
| Today: Partly cloudy in the morning then clearing. Highs 55 to 70. Light winds. Tonight: Mostly clear. Haze after midnight. Lows 41 to 53. Prevailing northwest winds up to 10 mph. Martin Luther King Jr Day: Mostly sunny. Highs 53 to 67 higher elevations...around 68 lower elevations. Prevailing northwest winds up to 10 mph. Monday Night: Clear. Lows 40 to 50. Prevailing northwest winds up to 10 mph. Tuesday: Mostly sunny. Highs 52 to 67. Prevailing northwest winds up to 10 mph. Tuesday Night: Partly cloudy. Lows 40 to 50. Wednesday: Partly cloudy. Highs 50 to 65. Wednesday Night: Partly cloudy. Lows 38 to 48. Thursday Through Friday Night: Mostly clear. Highs 47 to 62. Lows 35 to 48. Saturday: Partly cloudy with a slight chance of rain. Highs 45 to 60. | |
| Zone Forecast: Mountains Southwestern Shasta County to Western Colusa County | |
Visit your local NWS office at: https://www.weather.gov/sto |