Heavy Lake Effect Snow; Subfreezing Temperatures in the Eastern U.S.

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. The Arctic front will continue to bring increasing winds to the Northeast that will remain gusty. Subfreezing overnight low temperatures will be found as far south as the Gulf Coast. Read More >

Hazardous Weather Conditions

Dense Fog Advisory in effect from December 30, 02:00 AM PST until December 30, 12:00 PM PST

Current conditions at

DIABLO GRANDE (DBLC1)

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

44°F

7°C

Humidity	52%
Wind Speed	SE 4 MPH
Barometer	NA
Dewpoint	27°F (-3°C)
Visibility	NA
Wind Chill	42°F (6°C)
Last update	30 Dec 03:00 AM PST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

14 Miles NE Mount Hamilton CA

Dense Fog Advisory until December 30, 12:00pm

Click here for hazard details and duration

Dense Fog Advisory

Dense Fog Advisory until December 30, 12:00pm
NOW until 12:00pm Tue
Dense Fog Advisory
Overnight
Low: 38 °F
Mostly Clear
Tuesday
High: 58 °F
Increasing
Clouds
Tuesday Night
Low: 41 °F
Mostly Cloudy
then Slight
Chance Rain
Wednesday
High: 53 °F
Rain Likely
Wednesday Night
Low: 43 °F
Rain
New Year's Day
High: 55 °F
Rain
Thursday Night
Low: 46 °F
Rain Likely
Friday
High: 55 °F
Rain Likely

Detailed Forecast

Overnight

Mostly clear, with a steady temperature around 38. Light south wind.

Tuesday

Increasing clouds, with a high near 58. South southwest wind around 6 mph becoming light and variable in the afternoon.

Tuesday Night

A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 41. Calm wind becoming south southeast around 5 mph after midnight.

Wednesday

Rain likely, mainly after 10am. Cloudy, with a high near 53. South southeast wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night

Rain. Low around 43. Southeast wind around 8 mph. Chance of precipitation is 100%.

New Year's Day

Rain. High near 55. Chance of precipitation is 90%.

Thursday Night

Rain likely. Mostly cloudy, with a low around 46. Chance of precipitation is 70%.

Friday

Rain likely. Mostly cloudy, with a high near 55.

Friday Night

Rain. Mostly cloudy, with a low around 39.

Saturday

Rain likely. Mostly cloudy, with a high near 51.