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

88°F

31°C

Humidity 34%
Wind Speed SW 5 MPH
Barometer NA
Dewpoint 56°F (13°C)
Visibility NA
Heat Index86°F (30°C)
Last update 16 Aug 05:13 PM PDT
Extended Forecast for

3 Miles WNW Grass Valley CA

  • Tonight

    Tonight: Clear, with a low around 59. South wind around 6 mph becoming calm in the evening.

    Low: 59 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 80. Calm wind becoming south southwest 5 to 7 mph in the morning.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 54. South wind around 6 mph becoming calm in the evening.

    Low: 54 °F

    Clear

  • Monday

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

    High: 82 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 56. Southwest wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 58.

    Low: 58 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 63.

    Low: 63 °F

    Clear

Detailed Forecast

Tonight
Clear, with a low around 59. South wind around 6 mph becoming calm in the evening.
Sunday
Sunny, with a high near 80. Calm wind becoming south southwest 5 to 7 mph in the morning.
Sunday Night
Clear, with a low around 54. South wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 82. Calm wind becoming southwest around 6 mph in the afternoon.
Monday Night
Clear, with a low around 56. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Clear, with a low around 58.
Wednesday
Sunny, with a high near 91.
Wednesday Night
Clear, with a low around 63.
Thursday
Sunny, with a high near 95.
Thursday Night
Mostly clear, with a low around 67.
Friday
Sunny and hot, with a high near 97.
Friday Night
Mostly clear, with a low around 68.
Saturday
Sunny and hot, with a high near 96.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Grass Valley CA
 39.24°N 121.11°W (Elev. 1998 ft)
Last Update:
5:21 pm PDT Aug 16, 2025
Forecast Valid:
5pm PDT Aug 16, 2025-6pm PDT Aug 23, 2025
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

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Chance of Precipitation