National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Extreme Fire Weather Concerns; Severe Thunderstorms from the Plains to Mississippi Valley

Extremely critical fire weather concerns for portions of the southern High Plans as strong wind and very dry conditions could result in rapid spread of any fires. Meanwhile, severe thunderstorms are expected once again across areas of the Central and Southern Plains, then spreading in the Mississippi Valley regions on Monday. Damaging winds, very large hail and strong tornadoes are possible. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

Lat: 38.5°NLon: 122.81667°WElev: 125.0ft.

Overcast

48°F

9°C

Humidity 87%
Wind Speed SSE 3 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 27 Apr 01:00 AM PDT
Extended Forecast for

Saint Helena CA

  • Overnight

    Overnight: Widespread fog, mainly after 5am. Otherwise, partly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Fog

  • Monday

    Monday: A slight chance of drizzle after 2pm. Widespread fog, mainly before 8am. Otherwise, mostly sunny, with a high near 68. Light and variable wind.

    High: 68 °F

    Fog then
    Slight Chance
    Drizzle

  • Monday Night

    Monday Night: Widespread fog after 1am. Otherwise, mostly clear, with a low around 44. Light and variable wind.

    Low: 44 °F

    Partly Cloudy
    then Fog

  • Tuesday

    Tuesday: Widespread fog, mainly before 7am. Otherwise, sunny, with a high near 75. Calm wind.

    High: 75 °F

    Fog then
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 2am. Otherwise, clear, with a low around 47. Light and variable wind.

    Low: 47 °F

    Clear then
    Patchy Fog

  • Wednesday

    Wednesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 49.

    Low: 49 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 50.

    Low: 50 °F

    Clear then
    Patchy Fog

Detailed Forecast

Overnight
Widespread fog, mainly after 5am. Otherwise, partly cloudy, with a low around 42. Calm wind.
Monday
A slight chance of drizzle after 2pm. Widespread fog, mainly before 8am. Otherwise, mostly sunny, with a high near 68. Light and variable wind.
Monday Night
Widespread fog after 1am. Otherwise, mostly clear, with a low around 44. Light and variable wind.
Tuesday
Widespread fog, mainly before 7am. Otherwise, sunny, with a high near 75. Calm wind.
Tuesday Night
Patchy fog after 2am. Otherwise, clear, with a low around 47. Light and variable wind.
Wednesday
Sunny, with a high near 81.
Wednesday Night
Clear, with a low around 49.
Thursday
Sunny, with a high near 83.
Thursday Night
Patchy fog after 4am. Otherwise, mostly clear, with a low around 50.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 81.
Friday Night
Patchy fog. Otherwise, partly cloudy, with a low around 48.
Saturday
Patchy fog. Otherwise, mostly sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Mostly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Helena CA
 38.51°N 122.46°W (Elev. 203 ft)
Last Update:
12:26 am PDT Apr 27, 2026
Forecast Valid:
1am PDT Apr 27, 2026-6pm PDT May 3, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation