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

Extreme Heat Lingers; Severe Thunderstorms for Portions of the Plains and Southeast; Heavy Rainfall Threats

Gusty winds and heavy rainfall may impact the Big Island of Hawaii as a nearby tropical system passes west of the islands. From the Southwest U.S., Rockies and across the Gulf Coast, heavy rainfall could lead to isolated flash flooding. Severe thunderstorms are expected for areas of the Plains, Gulf Coast and Southeast through Tuesday. Extreme heat lingers for the southern Plains and Southwest. Read More >

Hazardous Weather Conditions

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Clear

78°F

26°C

Humidity 23%
Wind Speed NW 3 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 24 Aug 11:53 AM PDT
Extended Forecast for

10 Miles NNE Montague CA

Red Flag Warning until August 24, 08:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning until August 24, 08:00pm

    NOW until 8:00pm Mon

    Red Flag Warning

  • This Afternoon

    High: 94 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. South southeast wind 13 to 18 mph becoming light and variable in the evening. Winds could gust as high as 29 mph.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 93. Light and variable wind becoming south southwest 5 to 10 mph in the afternoon.

    High: 93 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 56. South southwest wind 5 to 9 mph becoming calm in the evening.

    Low: 56 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 92. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 92 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 94. South southeast wind 8 to 13 mph increasing to 15 to 20 mph. Winds could gust as high as 30 mph.
Tonight
Mostly clear, with a low around 58. South southeast wind 13 to 18 mph becoming light and variable in the evening. Winds could gust as high as 29 mph.
Tuesday
Mostly sunny, with a high near 93. Light and variable wind becoming south southwest 5 to 10 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 56. South southwest wind 5 to 9 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 92. Calm wind becoming west southwest around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
Sunny, with a high near 90.
Thursday Night
Mostly clear, with a low around 54.
Friday
Sunny, with a high near 89.
Friday Night
Mostly clear, with a low around 53.
Saturday
Sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 49.
Sunday
Sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NNE Montague CA
 41.86°N 122.48°W (Elev. 2608 ft)
Last Update:
11:26 am PDT Aug 24, 2026
Forecast Valid:
12pm PDT Aug 24, 2026-6pm PDT Aug 30, 2026
 
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