Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

DIABLO GRANDE (DBLC1)

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

NA

61°F

16°C

Humidity 35%
Wind Speed NE 2 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 19 Jan 09:00 AM PST
Extended Forecast for

14 Miles SW Keyes CA

Dense Fog Advisory January 19, 09:50am until January 19, 12:00pm
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory January 19, 09:50am until January 19, 12:00pm

    NOW until 12:00pm Mon

    Dense Fog Advisory

  • M.L.King Day

    High: 57 °F

    Areas Dense
    Fog then Haze

  • Tonight

    Tonight: Widespread dense fog, mainly after midnight.  Otherwise, increasing clouds, with a low around 41. Calm wind.

    Low: 41 °F

    Dense Fog

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 56. Light and variable wind.

    High: 56 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 59. Calm wind.

    High: 59 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

M.L.King Day
Widespread haze. Areas of dense fog before noon. Otherwise, mostly sunny, with a high near 57. Light and variable wind.
Tonight
Widespread dense fog, mainly after midnight. Otherwise, increasing clouds, with a low around 41. Calm wind.
Tuesday
Mostly cloudy, with a high near 56. Light and variable wind.
Tuesday Night
Mostly cloudy, with a low around 43. Calm wind.
Wednesday
Mostly cloudy, with a high near 59. Calm wind.
Wednesday Night
Mostly cloudy, with a low around 45.
Thursday
Partly sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Mostly sunny, with a high near 59.
Friday Night
Partly cloudy, with a low around 43.
Saturday
Mostly sunny, with a high near 59.
Saturday Night
Partly cloudy, with a low around 42.
Sunday
Partly sunny, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
14 Miles SW Keyes CA
 37.44°N 121.09°W (Elev. 105 ft)
3:06 am PST Jan 19, 2026
9am PST Jan 19, 2026-6pm PST Jan 25, 2026
 
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Additional Resources

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