National Weather Service forecast

St. Helena, California Weather

43°Tonight: Partly Cloudy then Patchy Fog
Wind WNW 3 mph
7-DayHourlyRadar

St. Helena 7-Day Forecast

  1. Tonight
    43°F
    Partly Cloudy then Patchy Fog
    1% chance of precipitation

    Patchy fog between 2am and 5am. Partly cloudy, with a low around 43. West northwest wind around 3 mph.

  2. Wednesday
    69°F
    Sunny
    2% chance of precipitation

    Sunny. High near 69, with temperatures falling to around 65 in the afternoon. Northwest wind around 3 mph.

  3. Wednesday Night
    43°F
    Mostly Cloudy then Patchy Fog
    2% chance of precipitation

    Patchy fog after 2am. Mostly cloudy, with a low around 43. North northwest wind around 2 mph.

  4. Thursday
    74°F
    Patchy Fog then Mostly Sunny

    Patchy fog before 8am. Mostly sunny, with a high near 74. North wind around 2 mph.

  5. Thursday Night
    42°F
    Mostly Clear

    Mostly clear, with a low around 42. North wind around 1 mph.

  6. Friday
    77°F
    Mostly Sunny

    Mostly sunny, with a high near 77.

  7. Friday Night
    44°F
    Mostly Clear

    Mostly clear, with a low around 44.

  8. Saturday
    77°F
    Sunny

    Sunny, with a high near 77.

  9. Saturday Night
    44°F
    Mostly Clear

    Mostly clear, with a low around 44.

  10. Sunday
    76°F
    Mostly Sunny

    Mostly sunny, with a high near 76.

  11. Sunday Night
    46°F
    Partly Cloudy

    Partly cloudy, with a low around 46.

  12. Monday
    73°F
    Patchy Fog then Partly Sunny
    2% chance of precipitation

    Patchy fog before 8am. Partly sunny, with a high near 73.

  13. Monday Night
    45°F
    Partly Cloudy
    2% chance of precipitation

    Partly cloudy, with a low around 45.

  14. Tuesday
    73°F
    Patchy Fog then Sunny
    8% chance of precipitation

    Patchy fog before 8am. Sunny, with a high near 73.

Issued by the National Weather Service (MTR office), updated .

St. Helena Hourly Forecast

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St. Helena Weather Radar

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About St. Helena

Population (2020 Census)
5,430
Coordinates
38.513, -122.468
Elevation
203 ft
NWS forecast office
MTR
Time zone
America/Los Angeles
Sunrise today
6:38 AM PST
Sunset today
5:08 PM PST
Daylight today
10 h 30 min

St. Helena Weather Questions

What is the weather forecast for St. Helena, California?

Tonight: Patchy fog between 2am and 5am. Partly cloudy, with a low around 43. West northwest wind around 3 mph. Wednesday: Sunny. High near 69, with temperatures falling to around 65 in the afternoon. Northwest wind around 3 mph.

Will it rain or snow in St. Helena this week?

Not much. The highest chance of precipitation in the 7-day forecast is 8%, Tuesday.

How warm and how cold will it get in St. Helena this week?

The warmest day is Friday, with a high near 77°F. The coldest night is Thursday Night, with a low near 42°F.

What time are sunrise and sunset in St. Helena today?

Sunrise is at 6:38 AM PST and sunset is at 5:08 PM PST, for 10 h 30 min of daylight.

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