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

Extreme Fire Weather Concerns; Severe Thunderstorms from the Plains to Mississippi Valley

Extremely critical fire weather concerns for portions of the southern High Plans as strong wind and very dry conditions could result in rapid spread of any fires. Meanwhile, severe thunderstorms are expected once again across areas of the Central and Southern Plains, then spreading in the Mississippi Valley regions on Monday. Damaging winds, very large hail and strong tornadoes are possible. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Overcast

55°F

13°C

Humidity 68%
Wind Speed W 8 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 27 Apr 01:54 AM PDT
Extended Forecast for

Union City CA

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 50. Light south southwest wind.

    Low: 50 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of drizzle between 8am and 2pm. Mostly sunny, with a high near 60. Light and variable wind becoming west 5 to 10 mph in the morning.

    High: 60 °F

    Slight Chance
    Drizzle

  • Monday Night

    Monday Night: Partly cloudy, with a low around 47. West wind 5 to 9 mph becoming light and variable after midnight.

    Low: 47 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 67. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 67 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 49. West northwest wind 5 to 10 mph becoming light and variable after midnight.

    Low: 49 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 50. Light south southwest wind.
Monday
A slight chance of drizzle between 8am and 2pm. Mostly sunny, with a high near 60. Light and variable wind becoming west 5 to 10 mph in the morning.
Monday Night
Partly cloudy, with a low around 47. West wind 5 to 9 mph becoming light and variable after midnight.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 67. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 49. West northwest wind 5 to 10 mph becoming light and variable after midnight.
Wednesday
Sunny, with a high near 72.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Sunny, with a high near 71.
Thursday Night
Partly cloudy, with a low around 53.
Friday
Mostly sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Partly sunny, with a high near 68.
Saturday Night
Mostly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Union City CA
 37.61°N 122°W (Elev. 594 ft)
Last Update:
1:26 am PDT Apr 27, 2026
Forecast Valid:
2am PDT Apr 27, 2026-6pm PDT May 3, 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