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.

Flash flood threat forecast from southwestern Texas to the Appalachians on Wednesday

Heavy rainfall will be possible along a frontal boundary that will extend from Maine to far southwestern Texas on Wednesday. Rainfall amounts of 2 to 4 inches will be possible with some locations seeing 5 to 6 inches especially across the southern Plains. Flash flooding will be possible mainly from southwestern Texas to the central Appalachians. Remember: Turn Around, Don't Drown.
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Current conditions at

DW9961 Petaluma (D9961)

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

NA

59°F

15°C

Humidity 84%
Wind Speed NE 1 G 5 MPH
Barometer 29.90 in
Dewpoint 54°F (12°C)
Visibility NA
Last update 07 Jul 11:09 pm PDT
Extended Forecast for

7 Miles SW Saint Helena CA

  • Tonight

    Tonight: Patchy fog.  Otherwise, mostly cloudy, with a low around 53. Calm wind.

    Patchy Fog

    Low: 53 °F

  • Wednesday

    Wednesday: Patchy fog before 11am.  Otherwise, partly sunny, with a high near 77. Light west southwest wind increasing to 8 to 13 mph in the morning.

    Patchy Fog
    then Mostly
    Sunny

    High: 77 °F

  • Wednesday
    Night

    Wednesday Night: Patchy fog after 11pm.  Otherwise, mostly cloudy, with a low around 56. West southwest wind 5 to 9 mph.

    Patchy Fog

    Low: 56 °F

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 11am.  Patchy fog before 11am.  Otherwise, mostly cloudy, with a high near 74. West southwest wind 5 to 11 mph.

    Slight Chance
    T-storms and
    Patchy Fog

    High: 74 °F

  • Thursday
    Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 11pm.  Patchy fog after 11pm.  Otherwise, mostly cloudy, with a low around 55. West southwest wind 7 to 10 mph.

    Slight Chance
    T-storms and
    Patchy Fog
    then Patchy
    Fog

    Low: 55 °F

  • Friday

    Friday: Patchy fog before 11am.  Otherwise, mostly sunny, with a high near 74.

    Patchy Fog
    then Mostly
    Sunny

    High: 74 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 53.

    Partly Cloudy

    Low: 53 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 74.

    Mostly Sunny

    High: 74 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 54.

    Partly Cloudy

    Low: 54 °F

Detailed Forecast

Tonight
Patchy fog. Otherwise, mostly cloudy, with a low around 53. Calm wind.
Wednesday
Patchy fog before 11am. Otherwise, partly sunny, with a high near 77. Light west southwest wind increasing to 8 to 13 mph in the morning.
Wednesday Night
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 56. West southwest wind 5 to 9 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 11am. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 74. West southwest wind 5 to 11 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms before 11pm. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 55. West southwest wind 7 to 10 mph.
Friday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 74.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Mostly sunny, with a high near 74.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 53.
Monday
Sunny, with a high near 86.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Mostly sunny, with a high near 85.
  Click Map For Forecast
Point Forecast:
7 Miles SW Saint Helena CA
 38.45°N 122.59°W (Elev. 535 ft)
8:47 pm PDT Jul 7, 2015
11pm PDT Jul 7, 2015-6pm PDT Jul 14, 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