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Napa, CA - Napa River Marine Weather Forecast

Station SFXC1 - Rush Ranch, San Francisco Bay Reserve, CA

December 18, 2025 9:45 pm PST
Location: 38.2N 122.026W
Wind Direction: S (170°)
Wind Speed: 5.1 knots
Atmospheric Pressure: 30.09 in (1019.0 mb)
Air Temperature: 54.1°F (12.3°C)
Dew Point: 51.6°F (10.9°C)


Tonight - 50°F
Dec 19, 2025
6 mph SSW
Cloudy then Widespread Fog
Widespread fog between midnight and 2am, then widespread fog and a slight chance of rain showers. Cloudy, with a low around 50. South southwest wind around 6 mph. Chance of precipitation is 20%.
Friday - 57°F
Dec 19, 2025
6 to 12 mph S
Areas Of Fog then Rain Showers
Patchy fog before 7am, then areas of fog and a chance of rain showers between 7am and 2pm, then rain showers and patchy fog. Cloudy, with a high near 57. South wind 6 to 12 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Friday Night - 53°F
Dec 19, 2025
5 to 10 mph SSW
Rain Showers
Rain showers. Cloudy, with a low around 53. South southwest wind 5 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Saturday - 55°F
Dec 20, 2025
5 mph S
Rain Showers
Rain showers. Cloudy, with a high near 55. South wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night - 54°F
Dec 20, 2025
5 to 10 mph SSE
Rain Showers
Rain showers. Cloudy, with a low around 54. South southeast wind 5 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Sunday - 59°F
Dec 21, 2025
10 to 15 mph SSW
Rain Showers
Rain showers. Cloudy, with a high near 59. Chance of precipitation is 90%.
Sunday Night - 54°F
Dec 21, 2025
13 mph SSW
Rain Showers
Rain showers. Cloudy, with a low around 54.
Monday - 56°F
Dec 22, 2025
8 to 12 mph SSW
Rain Showers
Rain showers. Cloudy, with a high near 56.
Monday Night - 50°F
Dec 22, 2025
8 mph SSW
Rain Showers
Rain showers. Cloudy, with a low around 50.
Tuesday - 53°F
Dec 23, 2025
8 mph SE
Rain Showers
Rain showers. Cloudy, with a high near 53.
Tuesday Night - 47°F
Dec 23, 2025
8 mph S
Rain Showers
Rain showers. Cloudy, with a low around 47.
Wednesday - 53°F
Dec 24, 2025
8 to 12 mph S
Rain Showers
Rain showers. Mostly cloudy, with a high near 53.
Wednesday Night - 48°F
Dec 24, 2025
10 mph SE
Rain Showers
Rain showers. Cloudy, with a low around 48.
Christmas Day - 53°F
Dec 25, 2025
10 to 14 mph SSE
Rain Showers
Rain showers before 5pm. Cloudy, with a high near 53.

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