Weather in Saint Helena, California, United States

7-Day Detailed Weather Forecast for Saint Helena

Tonight

Temperature: 47°F

Wind Speed: 13 to 23 mph

Wind Direction: SSE

Forecast: Showers and thunderstorms. Cloudy. Low around 47, with temperatures rising to around 49 overnight. South southeast wind 13 to 23 mph, with gusts as high as 49 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Christmas Day

Temperature: 52°F

Wind Speed: 9 to 20 mph

Wind Direction: SSW

Forecast: Showers and thunderstorms. Cloudy. High near 52, with temperatures falling to around 50 in the afternoon. South southwest wind 9 to 20 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Thursday Night

Temperature: 45°F

Wind Speed: 3 to 17 mph

Wind Direction: S

Forecast: Showers and thunderstorms. Cloudy. Low around 45, with temperatures rising to around 47 overnight. South wind 3 to 17 mph, with gusts as high as 43 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Friday

Temperature: 52°F

Wind Speed: 5 mph

Wind Direction: S

Forecast: Rain showers. Mostly cloudy, with a high near 52. South wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Friday Night

Temperature: 39°F

Wind Speed: 3 mph

Wind Direction: SE

Forecast: A chance of rain showers before 7pm, then patchy fog and a chance of showers and thunderstorms between 7pm and 1am, then areas of fog and a chance of rain showers. Mostly cloudy, with a low around 39. Southeast wind around 3 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

Saturday

Temperature: 53°F

Wind Speed: 3 mph

Wind Direction: NNE

Forecast: Areas of fog and a slight chance of rain showers before 10am. Mostly sunny, with a high near 53. Chance of precipitation is 20%.

Saturday Night

Temperature: 36°F

Wind Speed: 2 mph

Wind Direction: N

Forecast: Areas of frost after 2am. Mostly clear, with a low around 36.

Sunday

Temperature: 54°F

Wind Speed: 2 mph

Wind Direction: NNE

Forecast: Areas of frost before 8am. Mostly sunny, with a high near 54.

Sunday Night

Temperature: 36°F

Wind Speed: 2 mph

Wind Direction: NE

Forecast: Areas of frost after 2am. Mostly clear, with a low around 36.

Monday

Temperature: 57°F

Wind Speed: 2 mph

Wind Direction: NE

Forecast: Areas of frost before 8am. Sunny, with a high near 57.

Monday Night

Temperature: 36°F

Wind Speed: 2 mph

Wind Direction: NE

Forecast: Patchy frost between 3am and 4am, then patchy frost and patchy fog. Mostly clear, with a low around 36.

Tuesday

Temperature: 58°F

Wind Speed: 2 mph

Wind Direction: NE

Forecast: Patchy frost and patchy fog before 8am. Sunny, with a high near 58.

Tuesday Night

Temperature: 38°F

Wind Speed: 2 mph

Wind Direction: NE

Forecast: Partly cloudy, with a low around 38.

Wednesday

Temperature: 57°F

Wind Speed: 2 mph

Wind Direction: ENE

Forecast: Mostly sunny, with a high near 57.