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Lake Arthur Weather Forecast
| TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | WEDNESDAY NIGHT |
 |  | | | | |  |  | | | | |
| Clear | Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Chance of Rain | Chance of Rain | Mostly Clear | Mostly Clear | Clear | Clear |
| Lo: 66°FLo: 19°C | Hi: 90°FHi: 32°C | Lo: 60°FLo: 16°C | Hi: 71°FHi: 22°C | Lo: 49°FLo: 9°C | Hi: 63°FHi: 17°C | Lo: 47°FLo: 8°C | Hi: 61°FHi: 16°C | Hi: 64°FHi: 18°C Lo: 46°FLo: 8°C | Hi: 64°FHi: 18°C Lo: 46°FLo: 8°C | Hi: 72°FHi: 22°C Lo: 49°FLo: 9°C | Hi: 72°FHi: 22°C Lo: 49°FLo: 9°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1132 PM PDT Thu Oct 08 2026 
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Issued: 124 PM PDT Thu Oct 8 2026
Key Messages
- Heat Advisory in effect until 10 PM tonight for the Sacramento Valley, Delta, northern San Joaquin Valley, and adjacent foothills.
- Widespread Moderate HeatRisk with areas of Major HeatRisk today for the Delta, Valley, and Foothills.
- Pattern change will bring cooler temperatures, unsettled weather beginning this weekend into early next week
Discussion
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...Today... Mostly sunny skies across interior NorCal at the time of this writing. Temperatures climbing into the 80s across Valley lo...