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.

Isolated Severe Thunderstorms Will Continue

Isolated severe thunderstorms will continue from Minnesota to southwestern Kansas and vicinity. Within that swath, the most probable area for greater concentrations of severe weather is from eastern Nebraska across parts of Iowa. A marginal risk for severe thunderstorms also exists over eastern New England.
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Current conditions at

DW9961 Petaluma (D9961)

Lat: 38.27467°NLon: 122.66383°WElev: 43ft.

NA

64°F

18°C

Humidity 77%
Wind Speed NNW 1 G 4 MPH
Barometer 29.89 in
Dewpoint 57°F (14°C)
Visibility NA
Last update 29 Jul 8:30 am PDT
Extended Forecast for

4 Miles SSW Saint Helena CA

  • Today

    Today: Sunny and hot, with a high near 96. Calm wind becoming west southwest 5 to 8 mph in the afternoon.

    Hot

    High: 96 °F

  • Tonight

    Tonight: Clear, with a low around 66. West wind 5 to 9 mph becoming north northwest after midnight.

    Clear

    Low: 66 °F

  • Thursday

    Thursday: Sunny, with a high near 89. Calm wind becoming west southwest 5 to 9 mph in the afternoon.

    Sunny

    High: 89 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 63. Northwest wind around 10 mph.

    Partly Cloudy

    Low: 63 °F

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 11am.  Mostly sunny, with a high near 86. West southwest wind 6 to 9 mph.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Slight Chance
    T-storms

    High: 86 °F

  • Friday
    Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 11pm.  Partly cloudy, with a low around 62.

    Slight Chance
    T-storms then
    Mostly Clear

    Low: 62 °F

  • Saturday

    Saturday: Sunny, with a high near 83.

    Sunny

    High: 83 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 59.

    Partly Cloudy

    Low: 59 °F

  • Sunday

    Sunday: Sunny, with a high near 82.

    Sunny

    High: 82 °F

Detailed Forecast

Today
Sunny and hot, with a high near 96. Calm wind becoming west southwest 5 to 8 mph in the afternoon.
Tonight
Clear, with a low around 66. West wind 5 to 9 mph becoming north northwest after midnight.
Thursday
Sunny, with a high near 89. Calm wind becoming west southwest 5 to 9 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 63. Northwest wind around 10 mph.
Friday
A 20 percent chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 86. West southwest wind 6 to 9 mph. 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 62.
Saturday
Sunny, with a high near 83.
Saturday Night
Partly cloudy, with a low around 59.
Sunday
Sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 59.
Monday
Sunny, with a high near 82.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Sunny, with a high near 80.
  Click Map For Forecast
Point Forecast:
4 Miles SSW Saint Helena CA
 38.44°N 122.5°W (Elev. 1398 ft)
3:46 am PDT Jul 29, 2015
9am PDT Jul 29, 2015-6pm PDT Aug 4, 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