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Sunnyvale High School Weather Forecast
| REST OF TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SUNDAY | MONDAY | MONDAY NIGHT | TUESDAY |
 |  |  |  |  | | | | |  | |
| Sunny | Mostly Clear | Mostly Cloudy | Mostly Cloudy | Chance of Rain | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Cloudy | Partly Cloudy | Mostly Cloudy |
| Hi: 86°FHi: 30°C | Lo: 61°FLo: 16°C | Hi: 86°FHi: 30°C | Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C | Lo: 59°FLo: 15°C | Hi: 76°FHi: 24°C Lo: 55°FLo: 13°C | Hi: 76°FHi: 24°C Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 76°FHi: 24°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1102 AM PDT Wed Aug 26 2026 
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Issued: 142 PM PDT Wed Aug 26 2026
Key Messages
Updated at 140 PM PDT Wed Aug 26 2026- Temperatures near to slightly below seasonal averages persist within the shallow marine layer through Thursday
- Seasonably warm and very dry conditions continue above 1000 feet and the far interior through Thursday
- Pattern change Friday into the weekend brings cooler temperatures and increased potential for tropical moisture
Aviation
... (18Z TAFS) Issued at 136 PM PDT Wed Aug 26 2026
Clear skies and light winds expected over most of the Bay area wit...