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

Heavy Rain and Flooding Concerns in Hawaii; Severe Weather in the Plains

A storm system is expected to bring strong winds, widespread heavy rainfall, and flooding concerns to the Hawaiian Islands through the weekend. Strong to severe thunderstorms are forecast from the Southern Plains to the Mid-Missouri Valley this afternoon and evening. Large hail and strong winds are the primary threats. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Overcast

62°F

17°C

Humidity 60%
Wind Speed W 13 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 09 Apr 04:37 PM PDT
Extended Forecast for

Montague CA

  • This Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 70. South wind around 8 mph. Chance of precipitation is 60%.

    High: 70 °F

    Showers
    Likely

  • Tonight

    Tonight: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 11pm. Partly cloudy, with a low around 42. West wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 42 °F

    Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: A slight chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 4pm, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 64. Light and variable wind becoming south 6 to 11 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 70%.

    High: 64 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 41. South wind 5 to 10 mph becoming light south southeast in the evening. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 41 °F

    Showers then
    Chance
    Showers

  • Saturday

    Saturday: Showers likely, then showers and possibly a thunderstorm after 11am. High near 55. Light southeast wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 55 °F

    Showers

  • Saturday Night

    Saturday Night: Showers, mainly before 11pm. Snow level 5600 feet lowering to 4700 feet after midnight . Low around 36. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 36 °F

    Showers then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 11am. Snow level 4300 feet rising to 5000 feet in the afternoon. Mostly cloudy, with a high near 53. Chance of precipitation is 50%.

    High: 53 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of rain before 11pm. Snow level 5000 feet. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 70. South wind around 8 mph. Chance of precipitation is 60%.
Tonight
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 11pm. Partly cloudy, with a low around 42. West wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.
Friday
A slight chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 4pm, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 64. Light and variable wind becoming south 6 to 11 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 70%.
Friday Night
Showers and possibly a thunderstorm. Low around 41. South wind 5 to 10 mph becoming light south southeast in the evening. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers likely, then showers and possibly a thunderstorm after 11am. High near 55. Light southeast wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers, mainly before 11pm. Snow level 5600 feet lowering to 4700 feet after midnight . Low around 36. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
A chance of showers, with thunderstorms also possible after 11am. Snow level 4300 feet rising to 5000 feet in the afternoon. Mostly cloudy, with a high near 53. Chance of precipitation is 50%.
Sunday Night
A slight chance of rain before 11pm. Snow level 5000 feet. Mostly cloudy, with a low around 36.
Monday
Partly sunny, with a high near 57.
Monday Night
Mostly cloudy, with a low around 35.
Tuesday
Mostly sunny, with a high near 62.
Tuesday Night
Partly cloudy, with a low around 34.
Wednesday
Mostly sunny, with a high near 61.
Wednesday Night
Partly cloudy, with a low around 34.
Thursday
Mostly sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
Montague CA
 41.72°N 122.53°W (Elev. 2598 ft)
Last Update:
4:41 pm PDT Apr 9, 2026
Forecast Valid:
4pm PDT Apr 9, 2026-6pm PDT Apr 16, 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