Sunday
Becoming sunny
High:
89°F
Partly sunny, then gradually becoming sunny, with a high near 89. Calm wind becoming south southwest 5 to 8 mph in the afternoon.
Napa, CA Weather - Tomorrow’s Forecast
Sunday Night
Clouds increasing
Overnight low:
57°F
Increasing clouds, with a low around 57. South southwest wind around 6 mph becoming calm in the evening.