Napa, CA Weather - Tomorrow’s Forecast

Sunday

Frost in some areas

High:
58°F

Areas of frost before 8am. Otherwise, mostly sunny, with a high near 58. Calm wind.

Sunday Night

Patchy fog

Overnight low:
36°F

Patchy fog before midnight, then patchy fog after 5am. Otherwise, mostly clear, with a low around 36. Calm wind.