London, CA Weather Forecast
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London Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
| Sunny | Mostly Clear | Sunny | Partly Cloudy | Partly Sunny | Partly Cloudy | Mostly Clear | Mostly Clear | Clear | Clear | Sunny | Mostly Clear |
| Hi: 81°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 89°FHi: 32°C | Lo: 60°FLo: 16°C | Hi: 89°FHi: 32°C | Lo: 61°FLo: 16°C | Hi: 89°FHi: 32°C Lo: 60°FLo: 16°C | Hi: 89°FHi: 32°C Lo: 60°FLo: 16°C | Hi: 90°FHi: 32°C Lo: 61°FLo: 16°C | Hi: 90°FHi: 32°C Lo: 61°FLo: 16°C | Hi: 95°FHi: 35°C | Hi: 99°FHi: 37°C Lo: 65°FLo: 18°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 252 PM PDT Fri Sep 18 2026 

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Issued: 353 PM PDT Fri Sep 18 2026
Key Messages
1. Minor Heat Risk the rest of the week into next week with a warmup over the weekend after today.
2. MinRHs continue to be below 25% in the upper portions of the Sierra Nevada with some areas below 15%.
3. A moderate heat risk mid to late week next week is likely. Thursday looks to be the hottest day next week with a greater than 70% chance of a moderate heat risk.
Discussion
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Time for your favorite part of the day, reading the Area Forecast Discussion! Expect cooler temperatures toda...
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