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Above Average Temperatures in the West; Winter Weather Returns to the Upper Midwest and Great Lakes

Well above average temperatures will continue across the West this week, potentially breaking some daily high temperature records. A storm system dropping south out of Canada will bring a wintry mix to the Upper Midwest and Great Lakes Tuesday, pushing into the Central Appalachians and interior Northeast on Wednesday. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

57°F

14°C

Humidity 54%
Wind Speed NE 6 MPH
Barometer 30.26 in (1024.72 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 12 Jan 05:35 PM PST
Extended Forecast for

Castro Valley CA

  • Tonight

    Tonight: Mostly clear, with a low around 42. East northeast wind around 8 mph.

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 64. East northeast wind 6 to 8 mph.

    High: 64 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 42. Northeast wind around 7 mph.

    Low: 42 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 64. North northeast wind around 6 mph.

    High: 64 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 43. East northeast wind around 5 mph.

    Low: 43 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 42. East northeast wind around 8 mph.
Tuesday
Sunny, with a high near 64. East northeast wind 6 to 8 mph.
Tuesday Night
Mostly clear, with a low around 42. Northeast wind around 7 mph.
Wednesday
Sunny, with a high near 64. North northeast wind around 6 mph.
Wednesday Night
Clear, with a low around 43. East northeast wind around 5 mph.
Thursday
Sunny, with a high near 65.
Thursday Night
Mostly clear, with a low around 44.
Friday
Sunny, with a high near 65.
Friday Night
Mostly clear, with a low around 44.
Saturday
Sunny, with a high near 65.
Saturday Night
Mostly clear, with a low around 44.
Sunday
Sunny, with a high near 65.
Sunday Night
Partly cloudy, with a low around 44.
M.L.King Day
Mostly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castro Valley CA
 37.72°N 122.05°W (Elev. 397 ft)
Last Update:
12:41 pm PST Jan 12, 2026
Forecast Valid:
5pm PST Jan 12, 2026-6pm PST Jan 19, 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