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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

GERBER RESERVOIR (GRBO3)

Lat: 42.20597°NLon: 121.13806°WElev: 4950.0ft.

NA

71°F

22°C

Humidity 32%
Wind Speed SE 2 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Last update 19 Sep 11:45 AM PDT
Extended Forecast for

Bonanza OR

  • This Afternoon

    This Afternoon: Sunny, with a high near 74. Calm wind.

    High: 74 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 39. Light and variable wind.

    Low: 39 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Increasing clouds, with a high near 79. Light east wind.

    High: 79 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 80. Light and variable wind.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 74. Calm wind.
Tonight
Increasing clouds, with a low around 39. Light and variable wind.
Sunday
Increasing clouds, with a high near 79. Light east wind.
Sunday Night
Partly cloudy, with a low around 41. Calm wind.
Monday
Mostly sunny, with a high near 80. Light and variable wind.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 40.
Wednesday
Sunny, with a high near 74.
Wednesday Night
Partly cloudy, with a low around 38.
Thursday
Sunny, with a high near 76.
Thursday Night
Partly cloudy, with a low around 40.
Friday
Mostly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bonanza OR
 42.2°N 121.4°W (Elev. 4199 ft)
Last Update:
11:26 am PDT Sep 19, 2026
Forecast Valid:
12pm PDT Sep 19, 2026-6pm PDT Sep 25, 2026
 
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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