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Newcastle Weather Forecast
| TONIGHT | VETERANS DAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 | |  |  | |  |  |  |  | |  | |
| Hazy | Hazy | Clear | Mostly Sunny | Mostly Clear | Chance of T-Storm | Chance of T-Storm | Chance of Rain | Partly Cloudy | Chance of Rain | Rain | Rain |
| Lo: 49°FLo: 9°C | Hi: 74°FHi: 23°C | Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C | Lo: 52°FLo: 11°C | Hi: 65°FHi: 18°C | Lo: 47°FLo: 8°C | Hi: 62°FHi: 17°C | Lo: 46°FLo: 8°C | Hi: 61°FHi: 16°C | Hi: 57°FHi: 14°C Lo: 47°FLo: 8°C | Hi: 57°FHi: 14°C Lo: 47°FLo: 8°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1032 PM PST Tue Nov 10 2026 
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Issued: 218 PM PST Tue Nov 10 2026
Key Messages
- Dry weather, above normal temperatures, and periodically breezy north to east winds through Thursday
- Increasing potential for widespread rain, moderate to heavy rain and snow in the mountains, and gusty southerly winds
- Winter Storm Watch in effect from Friday morning through Monday afternoon for the Sierra and Lassen National Park above 6000`
- Gusty southerly winds late week, peaking on Friday, with additional wind over the weekend
- Wind Advisory is in effect from 4 am to 7 pm PST Frid...