Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Current conditions at

Alturas (KAAT)

Lat: 41.48362°NLon: 120.5615°WElev: 4383.0ft.

Mostly Cloudy

43°F

6°C

Humidity 65%
Wind Speed N 0 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 13 Apr 12:00 PM PDT
Extended Forecast for

11 Miles ENE Bieber CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 52. Calm wind becoming west 5 to 7 mph.

    High: 52 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 32. West northwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 32 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 57. Light and variable wind becoming west southwest 9 to 14 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 57 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after 11pm.  Snow level 6500 feet. Mostly cloudy, with a low around 38. West southwest wind 11 to 16 mph decreasing to 5 to 10 mph in the evening. Winds could gust as high as 24 mph.

    Low: 38 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: Rain likely, mainly after 11am.  Snow level 5900 feet rising to 6500 feet in the afternoon. Mostly cloudy, with a high near 50. Breezy, with a west southwest wind 5 to 10 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 34 mph.  Chance of precipitation is 60%.

    High: 50 °F

    Rain Likely
    and Breezy

  • Wednesday Night

    Wednesday Night: Rain showers before 8pm, then rain, possibly mixed with snow showers between 8pm and 11pm, then a chance of snow showers after 11pm.  Snow level 5900 feet lowering to 4200 feet after midnight . Low around 24. Breezy.  Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 24 °F

    Rain/Snow and
    Breezy then
    Chance Snow
    Showers

  • Thursday

    Thursday: A 20 percent chance of snow before 11am.  Mostly sunny, with a high near 46.

    High: 46 °F

    Slight Chance
    Snow then
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 22.

    Low: 22 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 52. Calm wind becoming west 5 to 7 mph.
Tonight
Mostly cloudy, with a low around 32. West northwest wind 5 to 7 mph becoming calm in the evening.
Tuesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 57. Light and variable wind becoming west southwest 9 to 14 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
A 20 percent chance of rain after 11pm. Snow level 6500 feet. Mostly cloudy, with a low around 38. West southwest wind 11 to 16 mph decreasing to 5 to 10 mph in the evening. Winds could gust as high as 24 mph.
Wednesday
Rain likely, mainly after 11am. Snow level 5900 feet rising to 6500 feet in the afternoon. Mostly cloudy, with a high near 50. Breezy, with a west southwest wind 5 to 10 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 60%.
Wednesday Night
Rain showers before 8pm, then rain, possibly mixed with snow showers between 8pm and 11pm, then a chance of snow showers after 11pm. Snow level 5900 feet lowering to 4200 feet after midnight . Low around 24. Breezy. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Thursday
A 20 percent chance of snow before 11am. Mostly sunny, with a high near 46.
Thursday Night
Mostly clear, with a low around 22.
Friday
Sunny, with a high near 58.
Friday Night
Partly cloudy, with a low around 31.
Saturday
Partly sunny, with a high near 63.
Saturday Night
Mostly cloudy, with a low around 37.
Sunday
A chance of rain. Snow level 6300 feet. Partly sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles ENE Bieber CA
 41.19°N 120.96°W (Elev. 4199 ft)
11:26 am PDT Apr 13, 2026
12pm PDT Apr 13, 2026-6pm PDT Apr 19, 2026
 
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Additional Resources

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