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Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

Nevada County Air Park (KGOO)

Lat: 39.224028°NLon: 121.003083°WElev: 3154.0ft.

Clear

63°F

17°C

Humidity 55%
Wind Speed ESE 5 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 18 Aug 01:15 AM PDT
Extended Forecast for

3 Miles ENE Grass Valley CA

  • Overnight

    Overnight: Clear, with a low around 60. Calm wind.

    Low: 60 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 77. Calm wind becoming south around 5 mph.

    High: 77 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 62. Calm wind.

    Low: 62 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 81. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 64. Light and variable wind.

    Low: 64 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 69.

    Low: 69 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 60. Calm wind.
Monday
Sunny, with a high near 77. Calm wind becoming south around 5 mph.
Monday Night
Clear, with a low around 62. Calm wind.
Tuesday
Sunny, with a high near 81. Calm wind becoming west southwest around 5 mph in the afternoon.
Tuesday Night
Clear, with a low around 64. Light and variable wind.
Wednesday
Sunny, with a high near 85.
Wednesday Night
Clear, with a low around 69.
Thursday
Sunny, with a high near 91.
Thursday Night
Mostly clear, with a low around 73.
Friday
Sunny, with a high near 93.
Friday Night
Mostly clear, with a low around 76.
Saturday
Sunny, with a high near 92.
Saturday Night
Mostly clear, with a low around 74.
Sunday
Sunny, with a high near 89.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Grass Valley CA
 39.24°N 120.99°W (Elev. 3199 ft)
Last Update:
12:21 am PDT Aug 18, 2025
Forecast Valid:
1am PDT Aug 18, 2025-6pm PDT Aug 24, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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