Napa Weather Forecast
- 51
- 56
Rain
- 51
- 54
Rain
- 52
- 57
Rain
- 47
- 55
Rain
- 44
- 53
Rain
- 46
- 52
Rain
Today 19 Dec North Bay Interior Valleys
Patchy dense fog in the morning. Rain. Highs in the mid to upper 50s. South Winds 10 to 20 Mph.
Tonight 19 Dec North Bay Interior Valleys
Cloudy. Patchy fog in the evening. Areas of fog after midnight. A chance of rain. Lows in the mid 40s to lower 50s. Southwest Winds 10 to 15 Mph. Becoming west up to 5 Mph after midnight.
Napa Temperature Statistics
December Temperature
Napa, Napa County Airport (6.2 miles)
Lowest 2 December, 2025
37 °FAverage December
44.5 °FHighest 3 December, 2025
66 °F
Climate (2020–Present)
Napa, Napa County Airport (6.2 miles)
Average Low 2020–2025
47 °FAverage 2020–2025
58 °FAverage High 2020–2025
70.1 °F