Critical Fire Weather in the High Plains; Heavy Snow in the Western Mountains and Northern Plains

Gusty winds and low relative humidity will bring critical fire weather to the central and southern High Plains Wednesday. Two Pacific storms will continue impacting the mountains of the western U.S. into Thursday with gusty winds and heavy snow. Heavy snow and gusty winds will continue to impact the northern Plains into the central Great Lakes Wednesday. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

Lat: 37.66083°NLon: 122.11833°WElev: 46.0ft.

Mostly Cloudy

45°F

7°C

Humidity 75%
Wind Speed W 10 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 18 Feb 03:35 AM PST
Extended Forecast for

Castro Valley CA

  • Overnight

    Overnight: Partly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Rain likely, mainly before 3pm.  Partly sunny, with a high near 50. Calm wind becoming west 5 to 9 mph in the afternoon.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain, mainly after midnight.  Low around 41. Southwest wind 7 to 14 mph becoming southeast in the evening. Winds could gust as high as 20 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 41 °F

    Chance Rain
    then Rain

  • Thursday

    Thursday: Rain, mainly before 10am.  High near 50. South southwest wind 6 to 11 mph becoming west 12 to 17 mph in the morning. Winds could gust as high as 29 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Rain then
    Chance Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before 10pm.  Patchy frost after 2am.  Otherwise, mostly clear, with a low around 35. West wind 6 to 11 mph, with gusts as high as 23 mph.

    Low: 35 °F

    Slight Chance
    Rain then
    Patchy Frost

  • Friday

    Friday: Areas of frost before 8am.  Otherwise, mostly sunny, with a high near 52.

    High: 52 °F

    Areas Frost
    then Partly
    Sunny

  • Friday Night

    Friday Night: A 10 percent chance of rain after 4am.  Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Saturday

    Saturday: A chance of rain, mainly after 10am.  Partly sunny, with a high near 58.

    High: 58 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Rain, mainly after 10pm.  Mostly cloudy, with a low around 48.

    Low: 48 °F

    Rain

Detailed Forecast

Overnight
Partly cloudy, with a low around 38. Calm wind.
Wednesday
Rain likely, mainly before 3pm. Partly sunny, with a high near 50. Calm wind becoming west 5 to 9 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain, mainly after midnight. Low around 41. Southwest wind 7 to 14 mph becoming southeast in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Rain, mainly before 10am. High near 50. South southwest wind 6 to 11 mph becoming west 12 to 17 mph in the morning. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A 20 percent chance of rain before 10pm. Patchy frost after 2am. Otherwise, mostly clear, with a low around 35. West wind 6 to 11 mph, with gusts as high as 23 mph.
Friday
Areas of frost before 8am. Otherwise, mostly sunny, with a high near 52.
Friday Night
A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 39.
Saturday
A chance of rain, mainly after 10am. Partly sunny, with a high near 58.
Saturday Night
Rain, mainly after 10pm. Mostly cloudy, with a low around 48.
Sunday
Rain. Mostly cloudy, with a high near 61.
Sunday Night
Rain. Cloudy, with a low around 52.
Monday
Rain. Cloudy, with a high near 62.
Monday Night
Rain. Cloudy, with a low around 50.
Tuesday
Rain. Mostly cloudy, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
Castro Valley CA
 37.72°N 122.05°W (Elev. 397 ft)
2:29 am PST Feb 18, 2026
3am PST Feb 18, 2026-6pm PST Feb 24, 2026
 
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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