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

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Mist

56°F

13°C

Humidity 90%
Wind Speed N 0 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 53°F (12°C)
Visibility 5.00 mi
Last update 17 Jun 06:53 AM PDT
Extended Forecast for

2 Miles NNW Saint Helena CA

Coastal Flood Advisory June 17, 07:02am until June 18, 05:00am
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory June 17, 07:02am until June 18, 05:00am

    NOW until 5:00am Thu

    Coastal Flood Advisory

  • Today

    High: 83 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 53. West wind around 6 mph becoming calm in the evening.

    Low: 53 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 78. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 53. West southwest wind 5 to 7 mph becoming calm after midnight.

    Low: 53 °F

    Increasing
    Clouds

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 74. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 74 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 7am. Otherwise, sunny, with a high near 80.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 1am. Otherwise, mostly clear, with a low around 52.

    Low: 52 °F

    Clear then
    Patchy Fog

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, sunny, with a high near 83. Calm wind becoming west southwest around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 53. West wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 78. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Thursday Night
Increasing clouds, with a low around 53. West southwest wind 5 to 7 mph becoming calm after midnight.
Juneteenth
Mostly sunny, with a high near 74. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Friday Night
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 52.
Saturday
Patchy fog before 7am. Otherwise, sunny, with a high near 80.
Saturday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 52.
Sunday
Patchy fog before 8am. Otherwise, sunny, with a high near 85.
Sunday Night
Patchy fog after 3am. Otherwise, mostly clear, with a low around 52.
Monday
Patchy fog. Otherwise, sunny, with a high near 85.
Monday Night
Patchy fog. Otherwise, mostly clear, with a low around 53.
Tuesday
Sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Saint Helena CA
 38.53°N 122.49°W (Elev. 262 ft)
Last Update:
6:21 am PDT Jun 17, 2026
Forecast Valid:
7am PDT Jun 17, 2026-6pm PDT Jun 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation