Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. Read More >

Current conditions at

Livermore, Livermore Municipal Airport (KLVK)

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

Mist

46°F

8°C

Humidity 87%
Wind Speed ENE 12 MPH
Barometer 30.18 in (1022.01 mb)
Dewpoint 43°F (6°C)
Visibility 5.00 mi
Wind Chill40°F (4°C)
Last update 30 Dec 02:20 PM PST
Extended Forecast for

4 Miles ESE Union City CA

  • This Afternoon

    This Afternoon: Cloudy, with a high near 50. Northeast wind around 14 mph.

    High: 50 °F

    Cloudy

  • Tonight

    Tonight: A 10 percent chance of rain after 4am.  Mostly cloudy, with a low around 45. Northeast wind 10 to 14 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: Rain likely, mainly after 10am.  Cloudy, with a high near 50. Northeast wind 6 to 9 mph becoming south southeast in the morning.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain.  Low around 48. Northeast wind around 9 mph.  Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 48 °F

    Rain

  • New Year's Day

    New Year's Day: Rain.  High near 55. South wind 8 to 11 mph, with gusts as high as 24 mph.  Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Rain then
    Rain Likely

  • Thursday Night

    Thursday Night: Rain likely.  Mostly cloudy, with a low around 52. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Rain Likely

  • Friday

    Friday: Rain likely.  Mostly cloudy, with a high near 56. Breezy.  Chance of precipitation is 70%.

    High: 56 °F

    Rain Likely
    and Breezy

  • Friday Night

    Friday Night: Rain.  Cloudy, with a low around 48.

    Low: 48 °F

    Rain

  • Saturday

    Saturday: Rain likely.  Mostly cloudy, with a high near 52.

    High: 52 °F

    Rain Likely

Detailed Forecast

This Afternoon
Cloudy, with a high near 50. Northeast wind around 14 mph.
Tonight
A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 45. Northeast wind 10 to 14 mph, with gusts as high as 20 mph.
Wednesday
Rain likely, mainly after 10am. Cloudy, with a high near 50. Northeast wind 6 to 9 mph becoming south southeast in the morning. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain. Low around 48. Northeast wind around 9 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
New Year's Day
Rain. High near 55. South wind 8 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Rain likely. Mostly cloudy, with a low around 52. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain likely. Mostly cloudy, with a high near 56. Breezy. Chance of precipitation is 70%.
Friday Night
Rain. Cloudy, with a low around 48.
Saturday
Rain likely. Mostly cloudy, with a high near 52.
Saturday Night
Rain likely. Mostly cloudy, with a low around 46.
Sunday
Rain likely. Mostly cloudy, with a high near 52.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 45.
Monday
A chance of rain. Mostly cloudy, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Union City CA
 37.58°N 121.93°W (Elev. 1017 ft)
12:26 pm PST Dec 30, 2025
2pm PST Dec 30, 2025-6pm PST Jan 5, 2026
 
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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