| NWS Forecast for: Napa Co. Airport CA Issued by: National Weather Service San Francisco Bay Area/Monterey, CA Last Update: 1:26 am PDT Jul 9, 2025 |  |
| Overnight: Mostly cloudy, with a low around 54. West wind around 6 mph. Wednesday: Cloudy through mid morning, then gradual clearing, with a high near 78. Southwest wind 5 to 10 mph. Wednesday Night: Mostly clear, with a low around 56. Southwest wind 5 to 7 mph becoming calm after midnight. Thursday: Partly sunny, then gradually becoming sunny, with a high near 86. Calm wind becoming southwest 5 to 9 mph in the afternoon. Thursday Night: Mostly clear, with a low around 57. Southwest wind 5 to 10 mph. Friday: Mostly sunny, with a high near 82. Friday Night: Mostly clear, with a low around 55. Saturday: Sunny, with a high near 76. Saturday Night: Partly cloudy, with a low around 55. Sunday: Mostly sunny, with a high near 76. Sunday Night: Partly cloudy, with a low around 55. Monday: Mostly sunny, with a high near 78. Monday Night: Partly cloudy, with a low around 55. Tuesday: Mostly sunny, with a high near 74. | |
| Napa Co. Airport CA 38.2°N 122.26°W (Elev. 39 ft) | |
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