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Colusa County Fairgrounds Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
 |  | |  | |  |  |  |  | |  | |
| Clearing | Patchy Fog | Patchy Fog | Chance of Rain | Clearing | Clear | Mostly Sunny | Partly Cloudy | Chance of Rain | Chance of Rain | Mostly Cloudy | Partly Cloudy |
| Hi: 69°FHi: 21°C | Lo: 48°FLo: 9°C | Hi: 64°FHi: 18°C | Lo: 47°FLo: 8°C | Hi: 64°FHi: 18°C | Lo: 44°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 66°FHi: 19°C Lo: 46°FLo: 8°C | Hi: 66°FHi: 19°C Lo: 46°FLo: 8°C | Hi: 67°FHi: 19°C | Lo: 47°FLo: 8°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1132 AM PDT Fri Oct 30 2026 
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Issued: 102 PM PDT Fri Oct 30 2026
Key Messages
- Light rain and mountain snow showers continue today for the Sierra and surrounding areas, accompanied by a low chance of isolated thunderstorms this afternoon into early evening
- Cooler temperatures, rain and mountain snow above 7,000 feet Saturday into Sunday
- Winter Weather Advisory in effect from 8 AM Saturday to 7 AM Sunday for elevations above 7000 feet in the Sierra Nevada
- Drier and warmer conditions Sunday through early next week, but temperatures will remain below-normal for th...