| National Weather Service Forecast for:
Sunnyvale CA Issued by: National Weather Service San Francisco Bay Area/Monterey, CA |
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| Updated: 8:46 pm PDT Sep 12, 2026 | ||||||||||||||||||
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| Tonight |
Mostly clear, with a low around 56. Northwest wind 8 to 14 mph, with gusts as high as 26 mph. |
| Sunday |
Sunny, with a high near 73. Northwest wind 8 to 14 mph, with gusts as high as 22 mph. |
| Sunday Night |
Mostly clear, with a low around 55. West northwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 21 mph. |
| Monday |
Sunny, with a high near 82. Light and variable wind becoming northwest 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph. |
| Monday Night |
Mostly clear, with a low around 56. Northwest wind 5 to 9 mph becoming calm in the evening. |
| Tuesday |
Sunny, with a high near 81. |
| Tuesday Night |
Mostly clear, with a low around 57. |
| Wednesday |
Sunny, with a high near 80. |
| Wednesday Night |
Mostly clear, with a low around 57. |
| Thursday |
Sunny, with a high near 81. |
| Thursday Night |
Mostly clear, with a low around 57. |
| Friday |
Sunny, with a high near 80. |
| Friday Night |
Mostly clear, with a low around 57. |
| Saturday |
Mostly sunny, with a high near 77. |
Forecast from NOAA-NWS for Sunnyvale CA.
