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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

64°F

18°C

Humidity 52%
Wind Speed N 6 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 18 Aug 01:55 AM PDT
Extended Forecast for

3 Miles SSW Grass Valley CA

  • Overnight

    Overnight: Clear, with a steady temperature around 59. Calm wind.

    Low: 59 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 81. Calm wind becoming south southwest around 6 mph in the morning.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 58. Calm wind.

    Low: 58 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85. Calm wind becoming west southwest around 6 mph in the afternoon.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 59. Southwest wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 65.

    Low: 65 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a steady temperature around 59. Calm wind.
Monday
Sunny, with a high near 81. Calm wind becoming south southwest around 6 mph in the morning.
Monday Night
Clear, with a low around 58. Calm wind.
Tuesday
Sunny, with a high near 85. Calm wind becoming west southwest around 6 mph in the afternoon.
Tuesday Night
Clear, with a low around 59. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Clear, with a low around 65.
Thursday
Sunny, with a high near 95.
Thursday Night
Mostly clear, with a low around 69.
Friday
Sunny and hot, with a high near 97.
Friday Night
Mostly clear, with a low around 71.
Saturday
Sunny, with a high near 95.
Saturday Night
Mostly clear, with a low around 69.
Sunday
Sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Grass Valley CA
 39.18°N 121.09°W (Elev. 2198 ft)
Last Update:
12:21 am PDT Aug 18, 2025
Forecast Valid:
2am 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