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

Severe Weather and Flash Flooding Potential for the Center of the Nation

An upper level trough coinciding with surface frontal boundaries will focus showers and thunderstorms from the Great Lakes region into the Ohio and Tennessee Valley's, central and southern Plains. Instances of flash flooding, damaging winds and large hail are possible. Meanwhile, increasing waves and rip currents for portions of the eastern seaboard this week as tropical Atlantic is active. Read More >

Current conditions at

Livermore, Livermore Municipal Airport (KLVK)

Lat: 37.69278°NLon: 121.81444°WElev: 397.0ft.

Clear

61°F

16°C

Humidity 72%
Wind Speed ENE 3 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 22 Sep 07:05 AM PDT
Extended Forecast for

4 Miles E Union City CA

  • Today

    Today: Sunny, with a high near 85. Light west wind increasing to 5 to 9 mph in the afternoon.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 63. Southwest wind 3 to 7 mph.

    Low: 63 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 90. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 90 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers, mainly after 11pm. Mostly cloudy, with a low around 63. Southwest wind 6 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 63 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers. Partly sunny, with a high near 79. West wind 6 to 8 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 79 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before 11pm. Partly cloudy, with a low around 61.

    Low: 61 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 58 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 85. Light west wind increasing to 5 to 9 mph in the afternoon.
Tonight
Clear, with a low around 63. Southwest wind 3 to 7 mph.
Tuesday
Sunny, with a high near 90. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Tuesday Night
A 30 percent chance of showers, mainly after 11pm. Mostly cloudy, with a low around 63. Southwest wind 6 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A 40 percent chance of showers. Partly sunny, with a high near 79. West wind 6 to 8 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 20 percent chance of showers before 11pm. Partly cloudy, with a low around 61.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 58.
Friday
Mostly sunny, with a high near 78.
Friday Night
Mostly clear, with a low around 57.
Saturday
Sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Union City CA
 37.6°N 121.93°W (Elev. 161 ft)
Last Update:
1:26 am PDT Sep 22, 2025
Forecast Valid:
7am PDT Sep 22, 2025-6pm PDT Sep 28, 2025
 
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