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

Excessive Rainfall and Significant Flooding in the Upper Midwest This Weekend

Heavy to excessive rainfall is expected over the weekend across eastern Iowa, northern Missouri, northwest Illinois and southern Wisconsin. Numerous flash floods, some with significant impacts, are expected in these areas. Heaviest rainfall will occur overnight Saturday and Sunday, so be sure to have multiple ways to receive warnings. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

78°F

26°C

Humidity 50%
Wind Speed W 12 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 09 Aug 02:54 PM PDT
Extended Forecast for

3 Miles SE Union City CA

  • Tonight

    Tonight: Mostly clear, with a low around 61. West wind 5 to 15 mph, with gusts as high as 18 mph.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 87. Light west wind becoming west northwest 8 to 13 mph in the morning.

    High: 87 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61. Northwest wind 5 to 11 mph.

    Low: 61 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 83. Light west wind becoming west northwest 8 to 13 mph in the morning.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 59. West northwest wind 6 to 14 mph.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 61. West wind 5 to 15 mph, with gusts as high as 18 mph.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 87. Light west wind becoming west northwest 8 to 13 mph in the morning.
Sunday Night
Mostly clear, with a low around 61. Northwest wind 5 to 11 mph.
Monday
Sunny, with a high near 83. Light west wind becoming west northwest 8 to 13 mph in the morning.
Monday Night
Mostly clear, with a low around 59. West northwest wind 6 to 14 mph.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Mostly sunny, with a high near 76.
Wednesday Night
Partly cloudy, with a low around 57.
Thursday
Mostly sunny, with a high near 73.
Thursday Night
Partly cloudy, with a low around 55.
Friday
Mostly sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 56.
Saturday
Mostly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Union City CA
 37.57°N 121.96°W (Elev. 367 ft)
Last Update:
1:26 pm PDT Aug 9, 2025
Forecast Valid:
3pm PDT Aug 9, 2025-6pm PDT Aug 16, 2025
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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Chance of Precipitation