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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Current conditions at

READER RANCH (RRRC1)

Lat: 39.30351°NLon: 121.11725°WElev: 1968.0ft.

NA

85°F

29°C

Humidity 36%
Wind Speed SSW 4 MPH
Barometer NA
Dewpoint 55°F (13°C)
Visibility NA
Heat Index84°F (29°C)
Last update 16 Aug 06:13 PM PDT
Extended Forecast for

12 Miles N Grass Valley CA

  • Tonight

    Tonight: Mostly clear, with a low around 56. Light and variable wind.

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 82. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 52. South southwest wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 83. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 53. Light and variable wind.

    Low: 53 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 55.

    Low: 55 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 59.

    Low: 59 °F

    Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 56. Light and variable wind.
Sunday
Sunny, with a high near 82. Calm wind becoming south southwest around 6 mph in the afternoon.
Sunday Night
Clear, with a low around 52. South southwest wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 83. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
Clear, with a low around 53. Light and variable wind.
Tuesday
Sunny, with a high near 87.
Tuesday Night
Clear, with a low around 55.
Wednesday
Sunny, with a high near 92.
Wednesday Night
Clear, with a low around 59.
Thursday
Sunny and hot, with a high near 97.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny and hot, with a high near 98.
Friday Night
Mostly clear, with a low around 66.
Saturday
Sunny and hot, with a high near 97.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles N Grass Valley CA
 39.38°N 121.09°W (Elev. 1798 ft)
Last Update:
5:21 pm PDT Aug 16, 2025
Forecast Valid:
7pm PDT Aug 16, 2025-6pm PDT Aug 23, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation