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

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

Lat: 37.881699°NLon: 121.914173°WElev: 3904.0ft.

NA

54°F

12°C

Humidity 26%
Wind Speed N 10 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Last update 19 Jan 01:25 PM PST
Extended Forecast for

4 Miles ENE Danville CA

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 64. North northeast wind around 5 mph.

    High: 64 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 48. Light north northeast wind.

    Low: 48 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 61. Northeast wind 3 to 5 mph.

    High: 61 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 62. Calm wind.

    High: 62 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Cloudy, with a low around 44.

    Low: 44 °F

    Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

  • Thursday Night

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

    Low: 43 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

Detailed Forecast

M.L.King Day
Sunny, with a high near 64. North northeast wind around 5 mph.
Tonight
Increasing clouds, with a low around 48. Light north northeast wind.
Tuesday
Partly sunny, with a high near 61. Northeast wind 3 to 5 mph.
Tuesday Night
Mostly cloudy, with a low around 44. Calm wind.
Wednesday
Mostly cloudy, with a high near 62. Calm wind.
Wednesday Night
Cloudy, with a low around 44.
Thursday
Partly sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Mostly sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 41.
Saturday
Sunny, with a high near 62.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Partly sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Danville CA
 37.85°N 121.94°W (Elev. 1362 ft)
1:15 pm PST Jan 19, 2026
1pm PST Jan 19, 2026-6pm PST Jan 25, 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