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.

Overcast

34°F

1°C

Humidity 92%
Wind Speed N 0 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 13 Apr 08:55 AM PDT
Extended Forecast for

11 Miles ENE Bieber CA

  • Today

    Today: Mostly sunny, with a high near 52. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 52 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 31. West wind 5 to 8 mph becoming calm  in the evening.

    Low: 31 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 56. Light and variable wind becoming west southwest 9 to 14 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 56 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 11pm.  Snow level 6400 feet. Mostly cloudy, with a low around 38. West southwest wind 12 to 17 mph decreasing to 5 to 10 mph in the evening. Winds could gust as high as 24 mph.

    Low: 38 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly after 11am.  Snow level 5800 feet rising to 6700 feet in the afternoon. Mostly cloudy, with a high near 51. Breezy, with a light south southwest wind becoming west southwest 18 to 23 mph in the morning. Winds could gust as high as 34 mph.  Chance of precipitation is 60%.

    High: 51 °F

    Showers
    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 6500 feet lowering to 4200 feet after midnight . Low around 23. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Rain/Snow
    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 23.

    Low: 23 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 52. Calm wind becoming west 5 to 7 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 31. West wind 5 to 8 mph becoming calm in the evening.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 56. 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 showers after 11pm. Snow level 6400 feet. Mostly cloudy, with a low around 38. West southwest wind 12 to 17 mph decreasing to 5 to 10 mph in the evening. Winds could gust as high as 24 mph.
Wednesday
Showers likely, mainly after 11am. Snow level 5800 feet rising to 6700 feet in the afternoon. Mostly cloudy, with a high near 51. Breezy, with a light south southwest wind becoming west southwest 18 to 23 mph in the morning. 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 6500 feet lowering to 4200 feet after midnight . Low around 23. Chance of precipitation is 90%. 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 23.
Friday
Sunny, with a high near 57.
Friday Night
Partly cloudy, with a low around 32.
Saturday
Mostly sunny, with a high near 62.
Saturday Night
Mostly cloudy, with a low around 35.
Sunday
A chance of rain. Snow level 6000 feet rising to 6600 feet in the afternoon. Partly sunny, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles ENE Bieber CA
 41.19°N 120.96°W (Elev. 4199 ft)
4:41 am PDT Apr 13, 2026
9am PDT Apr 13, 2026-6pm PDT Apr 19, 2026
 
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Additional Resources

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