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

Inclement Weather in the Pacific Northwest; Severe Thunderstorms in the Southeast; Impending Winter Storm

An approaching storm will bring rain and high elevation snow to Pacific Northwest through the weekend. Isolated severe thunderstorms are possible across parts of the Southeast today into this evening as a low strengthens over the Southeast. This system will form into a winter storm on Sunday that will bring heavy snow, high winds, and coastal flooding to the Mid-Atlantic and Northeast into Monday. Read More >

Current conditions at

LAS TRAMPAS (LTRC1)

Lat: 37.83389°NLon: 122.06694°WElev: 1760.0ft.

NA

39°F

4°C

Humidity 72%
Wind Speed S 12 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Wind Chill32°F (0°C)
Last update 21 Feb 04:28 AM PST
Extended Forecast for

5 Miles NW Castro Valley CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 58. South wind around 10 mph, with gusts as high as 21 mph.

    High: 58 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 45. South southeast wind around 10 mph, with gusts as high as 21 mph.

    Low: 45 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 64. South southeast wind 6 to 8 mph.

    High: 64 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 44. Light and variable wind.

    Low: 44 °F

    Partly Cloudy

  • Monday

    Monday: A 10 percent chance of rain after 4pm. Mostly sunny, with a high near 66. East northeast wind 3 to 6 mph.

    High: 66 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: Rain likely, mainly after 4am. Mostly cloudy, with a low around 53. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Rain Likely

  • Tuesday

    Tuesday: Rain. High near 61. Chance of precipitation is 80%.

    High: 61 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain, mainly before 10pm. Cloudy, with a low around 54.

    Low: 54 °F

    Rain

  • Wednesday

    Wednesday: A chance of rain, mainly before 10am. Mostly cloudy, with a high near 65.

    High: 65 °F

    Chance Rain

Detailed Forecast

This Afternoon
Sunny, with a high near 58. South wind around 10 mph, with gusts as high as 21 mph.
Tonight
Partly cloudy, with a low around 45. South southeast wind around 10 mph, with gusts as high as 21 mph.
Sunday
Mostly sunny, with a high near 64. South southeast wind 6 to 8 mph.
Sunday Night
Partly cloudy, with a low around 44. Light and variable wind.
Monday
A 10 percent chance of rain after 4pm. Mostly sunny, with a high near 66. East northeast wind 3 to 6 mph.
Monday Night
Rain likely, mainly after 4am. Mostly cloudy, with a low around 53. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Rain. High near 61. Chance of precipitation is 80%.
Tuesday Night
Rain, mainly before 10pm. Cloudy, with a low around 54.
Wednesday
A chance of rain, mainly before 10am. Mostly cloudy, with a high near 65.
Wednesday Night
A slight chance of rain. Mostly cloudy, with a low around 50.
Thursday
Mostly sunny, with a high near 67.
Thursday Night
Partly cloudy, with a low around 51.
Friday
Mostly sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NW Castro Valley CA
 37.77°N 122.12°W (Elev. 597 ft)
Last Update:
12:26 pm PST Feb 21, 2026
Forecast Valid:
1pm PST Feb 21, 2026-6pm PST Feb 27, 2026
 
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Additional Resources

Radar & Satellite Image

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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