Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Mid-Atlantic; Heavy Rain & Isolated Severe Thunderstorms in Southern California

Snow squalls are likely to cross the Lower Great Lakes this evening and the Ohio Valley through the interior Northeast/northern Mid-Atlantic overnight, before potentially reaching the I-95 corridor from D.C. to New York City early New Year’s Day morning. Heavy rain and isolated severe thunderstorms will impact coastal southern California including Los Angeles tonight into early on New Year's Day. Read More >

Current conditions at

DIABLO GRANDE (DBLC1)

Lat: 37.32927°NLon: 121.29538°WElev: 1861.0ft.

NA

45°F

7°C

Humidity 99%
Wind Speed SE 1 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 01 Jan 12:00 AM PST
Extended Forecast for

15 Miles S Tracy CA

  • Overnight

    Overnight: Rain.  Patchy fog. Low around 45. South wind around 14 mph, with gusts as high as 24 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 45 °F

    Rain and
    Patchy Fog

  • New Year's Day

    New Year's Day: Rain.  High near 55. South wind 10 to 14 mph, with gusts as high as 26 mph.  Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 55 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly before 10pm.  Mostly cloudy, with a low around 44. South wind around 10 mph, with gusts as high as 18 mph.  Chance of precipitation is 60%.

    Low: 44 °F

    Rain Likely
    then Chance
    Rain

  • Friday

    Friday: A 30 percent chance of rain, mainly after 4pm.  Increasing clouds, with a high near 55. South southeast wind 14 to 16 mph, with gusts as high as 28 mph.

    High: 55 °F

    Chance Rain

  • Friday Night

    Friday Night: Rain, mainly after 10pm.  Low around 48. Breezy, with a south southeast wind around 22 mph, with gusts as high as 37 mph.  Chance of precipitation is 80%.

    Low: 48 °F

    Rain and
    Breezy

  • Saturday

    Saturday: Rain before 1pm, then showers and possibly a thunderstorm after 1pm.  High near 55. Chance of precipitation is 100%.

    High: 55 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 4am, then rain after 4am.  Low around 46. Chance of precipitation is 90%.

    Low: 46 °F

    Showers

  • Sunday

    Sunday: Rain before 10am, then showers and possibly a thunderstorm after 10am.  Cloudy, with a high near 53.

    High: 53 °F

    Showers

  • Sunday Night

    Sunday Night: Rain.  Mostly cloudy, with a low around 42.

    Low: 42 °F

    Rain

Detailed Forecast

Overnight
Rain. Patchy fog. Low around 45. South wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
New Year's Day
Rain. High near 55. South wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 44. South wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.
Friday
A 30 percent chance of rain, mainly after 4pm. Increasing clouds, with a high near 55. South southeast wind 14 to 16 mph, with gusts as high as 28 mph.
Friday Night
Rain, mainly after 10pm. Low around 48. Breezy, with a south southeast wind around 22 mph, with gusts as high as 37 mph. Chance of precipitation is 80%.
Saturday
Rain before 1pm, then showers and possibly a thunderstorm after 1pm. High near 55. Chance of precipitation is 100%.
Saturday Night
Showers and possibly a thunderstorm before 4am, then rain after 4am. Low around 46. Chance of precipitation is 90%.
Sunday
Rain before 10am, then showers and possibly a thunderstorm after 10am. Cloudy, with a high near 53.
Sunday Night
Rain. Mostly cloudy, with a low around 42.
Monday
Rain likely. Mostly cloudy, with a high near 52.
Monday Night
Rain likely. Mostly cloudy, with a low around 42.
Tuesday
A chance of rain. Partly sunny, with a high near 52.
Tuesday Night
A slight chance of rain. Partly cloudy, with a low around 39.
Wednesday
A chance of rain. Partly sunny, with a high near 52.
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles S Tracy CA
 37.52°N 121.46°W (Elev. 1969 ft)
1:21 pm PST Dec 31, 2025
1am PST Jan 1, 2026-6pm PST Jan 7, 2026
 
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