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

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Hazardous Weather Conditions

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Clear

90°F

32°C

Humidity 18%
Wind Speed N 14 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 17 Jun 07:20 PM PDT
Extended Forecast for

Yreka CA

Fire Weather Watch June 19, 04:00am until June 19, 07:00pm
Click here for hazard details and duration
Fire Weather Watch

  • Tonight

    Tonight: Mostly cloudy, with a low around 60. North wind 6 to 11 mph becoming light in the evening. Winds could gust as high as 21 mph.

    Low: 60 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 10 percent chance of showers and thunderstorms after 3pm. Partly sunny, then gradually becoming sunny and hot, with a high near 98. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 98 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 9pm. Mostly clear, with a low around 61. Northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 61 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Juneteenth

    Juneteenth: A 50 percent chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 89. Light and variable wind.

    High: 89 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 11pm. Partly cloudy, with a low around 56. West southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 50%.

    Low: 56 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 53.

    Low: 53 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 56.

    Low: 56 °F

    Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 60. North wind 6 to 11 mph becoming light in the evening. Winds could gust as high as 21 mph.
Thursday
A 10 percent chance of showers and thunderstorms after 3pm. Partly sunny, then gradually becoming sunny and hot, with a high near 98. Calm wind becoming northwest around 6 mph in the afternoon.
Thursday Night
A 20 percent chance of showers and thunderstorms before 9pm. Mostly clear, with a low around 61. Northwest wind 5 to 8 mph becoming calm in the evening.
Juneteenth
A 50 percent chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 89. Light and variable wind.
Friday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 11pm. Partly cloudy, with a low around 56. West southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 50%.
Saturday
Sunny, with a high near 87.
Saturday Night
Clear, with a low around 53.
Sunday
Sunny, with a high near 90.
Sunday Night
Clear, with a low around 56.
Monday
Sunny, with a high near 95.
Monday Night
Clear, with a low around 60.
Tuesday
Sunny and hot, with a high near 96.
Tuesday Night
Clear, with a low around 60.
Wednesday
Sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Yreka CA
 41.75°N 122.62°W (Elev. 2726 ft)
Last Update:
4:40 pm PDT Jun 17, 2026
Forecast Valid:
7pm PDT Jun 17, 2026-6pm PDT Jun 24, 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