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Napa CA. Today: Increasing clouds, with a high near 79. Calm wind becoming south southwest around 6 mph. Tonight: Mostly cloudy, with a low around 50. South southwest wind around 6 mph becoming calm. Friday: Partly sunny, then gradually becoming sunny, with a high near 75. Calm wind becoming south southwest between 4 and 7 mph.
Clear. 54°F. 12°C. More Information: Local Forecast Office More Local Wx 3 Day History Mobile Weather Hourly Weather Forecast. Extended Forecast for. Napa CA. Tonight. Mostly Clear. Low: 46 °F. Thursday. Sunny. High: 69 °F. Thursday. Night. Mostly Cloudy. Low: 50 °F. Friday. Mostly Sunny. High: 69 °F. Friday. Night. Mostly Clear. Low: 44 °F.
Mostly Cloudy. Feels-Like Temperature. Feels Like 57°. Wind. WindWSW 6 mph. Humidity. Humidity 73%. UV Level. UV Index 3 of 11.
