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

Montague Siskiyou County Airport (KSIY)

Lat: 41.77375°NLon: 122.46817°WElev: 2644.0ft.

Overcast

41°F

5°C

Humidity 92%
Wind Speed N 0 MPH
Barometer 30.35 in (1027.77 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 07 Dec 09:53 PM PST
Extended Forecast for

4 Miles NE Montague CA

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Patchy Fog

  • Monday

    Monday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 54. Calm wind.

    High: 54 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31. South southwest wind 7 to 9 mph.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 56. Southwest wind 6 to 9 mph.

    High: 56 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 35. South southwest wind around 6 mph.

    Low: 35 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: A 20 percent chance of rain before 10am. Partly sunny, with a high near 57.

    High: 57 °F

    Slight Chance
    Rain then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 57.

    High: 57 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 29. Calm wind.
Monday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 54. Calm wind.
Monday Night
Partly cloudy, with a low around 31. South southwest wind 7 to 9 mph.
Tuesday
Partly sunny, with a high near 56. Southwest wind 6 to 9 mph.
Tuesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 35. South southwest wind around 6 mph.
Wednesday
A 20 percent chance of rain before 10am. Partly sunny, with a high near 57.
Wednesday Night
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 31.
Thursday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 57.
Thursday Night
Mostly clear, with a low around 28.
Friday
Patchy fog between 7am and 8am. Otherwise, sunny, with a high near 57.
Friday Night
Mostly clear, with a low around 26.
Saturday
Sunny, with a high near 56.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
Mostly sunny, with a high near 56.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Montague CA
 41.77°N 122.48°W (Elev. 2612 ft)
Last Update:
9:41 pm PST Dec 7, 2025
Forecast Valid:
10pm PST Dec 7, 2025-6pm PST Dec 14, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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