Tropical Moisture Brings Heavy Rain to Southwest; Strong Coastal Low to Impact the East Coast

Deep tropical moisture surging into the Southwest U.S. will lead to widespread showers and thunderstorms capable of producing flash flooding the next several days. A strong coastal low will develop late Friday and is expected to bring flooding, high surf, dangerous rip currents, gusty winds and heavy rain to much of the U.S. East Coast through early next week. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Mostly Cloudy

63°F

17°C

Humidity 48%
Wind Speed SSW 19 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 09 Oct 04:35 PM PDT
Detailed forecast for

Central Siskiyou County

Tonight
Mostly cloudy. Chance of rain this evening. Showers likely and slight chance of thunderstorms after midnight, then chance of rain well after midnight. Lows in the mid 40s to lower 50s. South winds 10 to 15 mph shifting to the northwest 5 to 10 mph after midnight, then shifting to the east well after midnight. Chance of precipitation 60 percent.
Friday
Mostly cloudy. Chance of rain in the morning, then rain in the afternoon. Snow level 7000 feet lowering to 6500 feet in the afternoon. Highs in the lower to mid 50s. South winds 10 to 20 mph decreasing to 5 to 10 mph late in the afternoon. Chance of rain 80 percent.
Friday Night
Mostly cloudy in the evening then becoming partly cloudy. A 50 percent chance of rain. Snow level 6000 feet lowering to 5500 feet after midnight. Lows in the mid 30s to lower 40s. South winds 5 to 10 mph shifting to the west late in the evening and overnight.
Saturday
Mostly cloudy with a 30 percent chance of rain. Snow level 5000 feet. Highs in the lower to mid 50s. Northwest winds around 5 mph.
Saturday Night
Mostly cloudy with a 20 percent chance of rain. Snow level 5500 feet after midnight. Lows in the mid 30s to lower 40s. West winds 5 to 10 mph.
Sunday
Mostly cloudy in the morning then becoming partly cloudy. Highs in the lower to mid 50s.
Sunday Night
Mostly cloudy with a chance of rain. Lows in the mid 30s to lower 40s.
Columbus Day
Mostly cloudy. Chance of rain in the morning, then rain likely in the afternoon. Highs in the mid 40s to mid 50s.
Monday Night
Mostly cloudy with a chance of rain. Lows in the mid 30s to lower 40s.
Tuesday
Mostly cloudy in the morning then becoming partly cloudy. Slight chance of rain. Highs in the lower to mid 50s.
Tuesday Night Through Wednesday Night
Partly cloudy with a slight chance of rain. Lows in the mid 30s to lower 40s. Highs in the lower 50s to lower 60s.
Thursday
Partly cloudy in the morning then clearing. Highs in the lower 50s to lower 60s.



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206 PM PDT Thu Oct 9 2025
 
 

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