Severe Thunderstorms in the Ohio Valley and Mid-Atlantic; Heat Continuing in the Central U.S.

Widespread strong to severe thunderstorms are expected from the Upper Ohio Valley into the Mid-Atlantic through Friday, with damaging winds as the primary threat. Dangerous heat will continue from the South-Central U.S. to the Midwest, Ohio/Tennessee valleys, and Mid-Atlantic. Widespread Major to Extreme Heat Risk is forecast into the weekend and will confine to the South-Central U.S. by Labor Day Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

Lat: 41.77375° N Lon: 122.46817° W Elev: 2644.0 ft.

Overcast

48°F

9°C

Humidity 81%
Wind Speed N 0 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 03 Sep 10:15 PM PDT
Detailed forecast for

Central Siskiyou County

Tonight
Mostly clear. A 10 percent chance of rain showers early this evening. Lows around 40. West winds 5 to 10 mph shifting to the southeast well after midnight.
Friday
Partly cloudy with a slight chance of showers in the morning, then mostly cloudy with a chance of showers and slight chance of thunderstorms in the afternoon. Snow level 7000 feet in the afternoon. Highs in the lower to mid 60s. East winds around 5 mph shifting to the southwest in the afternoon. Chance of precipitation 30 percent.
Friday Night
Mostly cloudy with a chance of showers and slight chance of thunderstorms in the evening, then mostly clear after midnight. Lows in the mid 40s. West winds 5 to 10 mph shifting to the north late in the evening and overnight. Chance of precipitation 30 percent.
Saturday
Sunny. Highs in the mid 60s to mid 70s. East winds around 5 mph shifting to the south late in the afternoon.
Saturday Night
Mostly cloudy with a 40 percent chance of showers. Lows in the mid 40s to lower 50s. West winds around 5 mph early in the evening becoming light.
Sunday
Mostly cloudy. Chance of showers in the morning, then showers likely and slight chance of thunderstorms in the afternoon. Highs in the lower 60s to lower 70s.
Sunday Night
Mostly cloudy in the evening then clearing. Chance of rain. Lows in the mid 40s.
Labor Day And Monday Night
Mostly clear. Highs in the mid 60s to mid 70s. Lows in the mid 40s to lower 50s.
Tuesday Through Wednesday
Partly cloudy. Highs in the mid 70s to mid 80s. Lows in the mid 40s to lower 50s.
Wednesday Night And Thursday
Mostly clear. Lows in the lower to mid 50s. Highs in the mid 70s to mid 80s.



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239 PM PDT Thu Sep 3 2026
 
 

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