Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

Livermore, Livermore Municipal Airport (KLVK)

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

Clear

44°F

7°C

Humidity 85%
Wind Speed NE 3 MPH
Barometer 30.29 in (1025.74 mb)
Dewpoint 40°F (4°C)
Visibility 7.00 mi
Last update 08 Dec 05:53 PM PST
Extended Forecast for

4 Miles E Union City CA

  • Tonight

    Tonight: Mostly clear, with a low around 46. Light north northeast wind.

    Low: 46 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 61. North wind 3 to 6 mph.

    High: 61 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 47. Light and variable wind.

    Low: 47 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 65. North wind around 6 mph.

    High: 65 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 48. Light northeast wind.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 46. Light north northeast wind.
Tuesday
Sunny, with a high near 61. North wind 3 to 6 mph.
Tuesday Night
Mostly clear, with a low around 47. Light and variable wind.
Wednesday
Sunny, with a high near 65. North wind around 6 mph.
Wednesday Night
Mostly clear, with a low around 48. Light northeast wind.
Thursday
Sunny, with a high near 64.
Thursday Night
Mostly clear, with a low around 47.
Friday
Sunny, with a high near 63.
Friday Night
Mostly clear, with a low around 47.
Saturday
Sunny, with a high near 62.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
Partly sunny, with a high near 61.
Sunday Night
Mostly cloudy, with a low around 49.
Monday
A slight chance of rain. Partly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Union City CA
 37.6°N 121.93°W (Elev. 161 ft)
12:26 pm PST Dec 8, 2025
6pm PST Dec 8, 2025-6pm PST Dec 15, 2025
 
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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