| National Weather Service Forecast for:
Napa CA Issued by: National Weather Service San Francisco Bay Area/Monterey, CA |
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| Updated: 12:46 am PDT Aug 20, 2026 | ||||||||||||||||||
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| Overnight |
Mostly cloudy, with a low around 56. Light south southwest wind. |
| Thursday |
Mostly cloudy, with a high near 79. Calm wind becoming south southwest 5 to 8 mph in the morning. |
| Thursday Night |
Mostly cloudy, with a low around 56. South southwest wind around 6 mph becoming calm in the evening. |
| Friday |
Partly sunny, with a high near 79. Calm wind becoming southwest 5 to 9 mph in the morning. |
| Friday Night |
Partly cloudy, with a low around 55. West southwest wind 5 to 9 mph becoming calm in the evening. |
| Saturday |
Mostly sunny, with a high near 80. |
| Saturday Night |
Mostly clear, with a low around 56. |
| Sunday |
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 81. |
| Sunday Night |
Partly cloudy, with a low around 56. |
| Monday |
Patchy fog before 8am. Otherwise, partly sunny, with a high near 78. |
| Monday Night |
Partly cloudy, with a low around 55. |
| Tuesday |
Patchy fog. Otherwise, partly sunny, with a high near 79. |
| Tuesday Night |
Partly cloudy, with a low around 55. |
| Wednesday |
Partly sunny, with a high near 80. |
Forecast from NOAA-NWS for Napa CA.
