Napa River - Mud Slough Entrance Weather Forecast
- 52
- 57
Rain
- 49
- 57
Rain
- 50
- 53
Rain
- 47
- 51
Rain
- 40
- 50
Rain Likely
- 38
- 50
Slight Chance Rain
Today 22 Dec North Bay Interior Valleys
Patchy dense fog in the morning. Rain likely in the Morning, then rain in the afternoon. Highs in the 50s. Southwest Winds 10 to 15 Mph with Gusts to around 30 Mph.
Tonight 22 Dec North Bay Interior Valleys
Patchy fog. Rain. Lows in the 40s to mid 50s. Northwest Winds up to 5 Mph increasing to southeast 10 to 15 Mph after midnight.
Napa River - Mud Slough Entrance Temperature Statistics
December Temperature
Napa, Napa County Airport (1.9 miles)
Lowest 2 December, 2025
37 °FAverage December
46.1 °FHighest 3 December, 2025
66 °F
Climate (2020–Present)
Napa, Napa County Airport (1.9 miles)
Average Low 2020–2025
47.1 °FAverage 2020–2025
58.1 °FAverage High 2020–2025
70.1 °F