On July 7, 2015, NWS implemented changes to the icons depicted on all of its point-forecast pages. Changes include new icon images with increased clarity, 6-hour increments for rapidly changing weather and new color blocks to highlight forecast hazards.

A page depicting all of the new icon images can be accessed here: www.weather.gov/forecast-icons

Changes to the icons were based on analysis of 6,700 public comments collected in 2014. Also, many of these changes are based on the results of a research project led by the National Center for Atmospheric Research.

Users are encouraged to continue to provide comments regarding these changes via email at icons@noaa.gov. NWS will continue to analyze incoming feedback and refine the icons as necessary. Any substantial change to the icons will be facilitated through the NWS public comment/review process.

Dangerous heat continues across lower Miss. Valley, Deep South

High temperatures and dew points will persist Thursday into Friday across parts of the lower Miss. Valley & Deep South, creating dangerous heat index values in excess of 110 degrees for some locations. Heat Advisories & Excessive Heat Warnings are in effect across the region. Take extra precautions if you work or spend time outside & know the signs and symptoms of heat exhaustion and heat stroke.
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Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

Lat: 38.5°NLon: 122.81667°WElev: 125ft.

Fair

78°F

26°C

Humidity 52%
Wind Speed VRBL 5 MPH
Barometer 30.01 in (1015.7 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 30 Jul 12:53 pm PDT
Extended Forecast for

Saint Helena CA

  • This
    Afternoon

    This Afternoon: Mostly sunny, with a high near 95. South southeast wind 6 to 9 mph becoming west southwest.

    Mostly Sunny

    High: 95 °F

  • Tonight

    Tonight: Partly cloudy, with a low around 59. West wind 5 to 8 mph becoming calm  in the evening.

    Partly Cloudy

    Low: 59 °F

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 11am.  Partly sunny, with a high near 92. Southeast wind 5 to 8 mph becoming calm.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Slight Chance
    T-storms

    High: 92 °F

  • Friday
    Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 11pm.  Partly cloudy, with a low around 58. West southwest wind 9 to 11 mph.

    Slight Chance
    T-storms then
    Partly Cloudy

    Low: 58 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 90. West southwest wind 7 to 9 mph.

    Mostly Sunny

    High: 90 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 57.

    Mostly Clear

    Low: 57 °F

  • Sunday

    Sunday: Sunny, with a high near 88.

    Sunny

    High: 88 °F

  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 56.

    Mostly Clear

    Low: 56 °F

  • Monday

    Monday: Sunny, with a high near 86.

    Sunny

    High: 86 °F

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 95. South southeast wind 6 to 9 mph becoming west southwest.
Tonight
Partly cloudy, with a low around 59. West wind 5 to 8 mph becoming calm in the evening.
Friday
A 20 percent chance of showers and thunderstorms after 11am. Partly sunny, with a high near 92. Southeast wind 5 to 8 mph becoming calm. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 58. West southwest wind 9 to 11 mph.
Saturday
Mostly sunny, with a high near 90. West southwest wind 7 to 9 mph.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 56.
Monday
Sunny, with a high near 86.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Sunny, with a high near 85.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Sunny, with a high near 90.
  Click Map For Forecast
Point Forecast:
Saint Helena CA
 38.51°N 122.46°W (Elev. 203 ft)
3:08 am PDT Jul 30, 2015
1pm PDT Jul 30, 2015-6pm PDT Aug 5, 2015
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database