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.

Heat Wave in Central U.S.

Dangerous heat will continue in the Nation's mid-section on Tuesday. Combined with high humidity, this will lead to Heat Index temperatures ranging from 100 to 110 degrees Fahrenheit across parts of the Plains and mid-South. Heat Advisories and Excessive Heat Warnings are in effect. If you must be outside, slow down and drink plenty of water.
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7-Day Forecast for Latitude 39.23°N and Longitude 121.05°W (Elev. 2657 ft) (Text-Only)
NWS Forecast for: Grass Valley CA
Issued by: National Weather Service Sacramento, CA
Last Update: 5:41 pm PDT Jul 27, 2015
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  • Tonight

    Tonight: Clear, with a low around 64. Light and variable wind becoming east 5 to 9 mph after midnight.

    Clear

    Low: 64 °F

  • Tuesday

    Tuesday: Sunny, with a high near 94. East wind 5 to 14 mph becoming west in the afternoon. Winds could gust as high as 21 mph.

    Sunny

    High: 94 °F

  • Tuesday
    Night

    Tuesday Night: Clear, with a low around 67. Light and variable wind becoming east 6 to 11 mph after midnight.

    Clear

    Low: 67 °F

  • Wednesday

    Wednesday: Sunny and hot, with a high near 96. East wind 6 to 11 mph becoming west southwest in the morning.

    Hot

    High: 96 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 68. West wind 5 to 7 mph becoming calm  in the evening.

    Mostly Clear

    Low: 68 °F

  • Thursday

    Thursday: Sunny and hot, with a high near 99.

    Hot

    High: 99 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 69.

    Partly Cloudy

    Low: 69 °F

  • Friday

    Friday: Mostly sunny, with a high near 94.

    Mostly Sunny

    High: 94 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 69.

    Partly Cloudy

    Low: 69 °F



  • Tonight: Clear, with a low around 64. Light and variable wind becoming east 5 to 9 mph after midnight.

    Tuesday: Sunny, with a high near 94. East wind 5 to 14 mph becoming west in the afternoon. Winds could gust as high as 21 mph.

    Tuesday Night: Clear, with a low around 67. Light and variable wind becoming east 6 to 11 mph after midnight.

    Wednesday: Sunny and hot, with a high near 96. East wind 6 to 11 mph becoming west southwest in the morning.

    Wednesday Night: Mostly clear, with a low around 68. West wind 5 to 7 mph becoming calm in the evening.

    Thursday: Sunny and hot, with a high near 99.

    Thursday Night: Partly cloudy, with a low around 69.

    Friday: Mostly sunny, with a high near 94.

    Friday Night: Partly cloudy, with a low around 69.

    Saturday: Mostly sunny, with a high near 91.

    Saturday Night: Partly cloudy, with a low around 66.

    Sunday: Mostly sunny, with a high near 91.

    Sunday Night: Partly cloudy, with a low around 65.

    Monday: Mostly sunny, with a high near 89.



    Grass Valley CA
     39.23°N 121.05°W (Elev. 2657 ft)

    Visit your local NWS office at: http://www.wrh.noaa.gov/sto