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

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

Mount Shasta (KMHS)

Lat: 41.31494°NLon: 122.31702°WElev: 3540.0ft.

Mostly Cloudy

53°F

12°C

Humidity 54%
Wind Speed NA 3 MPH
Barometer 30.24 in (1024.04 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 07 Dec 01:56 PM PST
Extended Forecast for

Mount Shasta CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 54. Calm wind.

    High: 54 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 34. Calm wind.

    Low: 34 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 57. Calm wind.

    High: 57 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 37. Calm wind.

    Low: 37 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 59. Calm wind becoming west southwest around 5 mph.

    High: 59 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 40.

    Low: 40 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: A 20 percent chance of rain before 10am. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 61.

    High: 61 °F

    Slight Chance
    Rain and
    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Thursday

    Thursday: Patchy fog between 7am and 8am. Otherwise, sunny, with a high near 61.

    High: 61 °F

    Patchy Fog
    then Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 54. Calm wind.
Tonight
Partly cloudy, with a low around 34. Calm wind.
Monday
Sunny, with a high near 57. Calm wind.
Monday Night
Partly cloudy, with a low around 37. Calm wind.
Tuesday
Mostly sunny, with a high near 59. Calm wind becoming west southwest around 5 mph.
Tuesday Night
A 20 percent chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 40.
Wednesday
A 20 percent chance of rain before 10am. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 61.
Wednesday Night
Partly cloudy, with a low around 39.
Thursday
Patchy fog between 7am and 8am. Otherwise, sunny, with a high near 61.
Thursday Night
Mostly clear, with a low around 37.
Friday
Sunny, with a high near 64.
Friday Night
Mostly clear, with a low around 37.
Saturday
Sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Shasta CA
 41.3°N 122.32°W (Elev. 3415 ft)
Last Update:
2:11 pm PST Dec 7, 2025
Forecast Valid:
2pm PST Dec 7, 2025-6pm PST Dec 13, 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