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

Cold Weather Advisory in effect from December 30, 01:00 AM PST until December 30, 09:00 AM PST

Current conditions at

LAS TRAMPAS (LTRC1)

Lat: 37.83389°NLon: 122.06694°WElev: 1760.0ft.

51°F

11°C

Humidity	41%
Wind Speed	E 16 MPH
Barometer	NA
Dewpoint	28°F (-2°C)
Visibility	NA
Last update	30 Dec 02:28 AM PST

More Information:

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

Extended Forecast for

3 Miles W Danville CA

Cold Weather Advisory until December 30, 09:00am

Click here for hazard details and duration

Cold Weather Advisory

Cold Weather Advisory until December 30, 09:00am
NOW until 9:00am Tue
Cold Weather Advisory
Overnight
Low: 37 °F
Patchy Frost
Tuesday
High: 50 °F
Increasing
Clouds
Tuesday Night
Low: 43 °F
Cloudy then
Slight Chance
Rain
Wednesday
High: 50 °F
Rain and
Patchy Fog
Wednesday Night
Low: 46 °F
Rain and
Patchy Fog
New Year's Day
High: 55 °F
Rain and
Areas Fog
Thursday Night
Low: 51 °F
Showers and
Areas Fog
Friday
High: 55 °F
Showers

Detailed Forecast

Overnight

Patchy frost between 4am and 5am. Otherwise, mostly clear, with a low around 37. North northeast wind around 7 mph.

Tuesday

Increasing clouds, with a high near 50. North northeast wind around 9 mph.

Tuesday Night

A 10 percent chance of rain after 4am. Cloudy, with a low around 43. North wind around 7 mph.

Wednesday

Rain, mainly after 10am. Patchy fog after 2pm. High near 50. Northeast wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night

Rain. Patchy fog before 10pm. Low around 46. East wind 6 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

New Year's Day

Rain. Patchy fog before 1pm, then areas of fog after 4pm. High near 55. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night

Rain, mainly before 4am, then showers likely and possibly a thunderstorm after 4am. Areas of fog before 10pm. Low around 51. Chance of precipitation is 80%.

Friday

Showers likely and possibly a thunderstorm, then rain after 10am. Cloudy, with a high near 55.

Friday Night

Rain. Cloudy, with a low around 47.

Saturday

Rain likely. Patchy fog after 4pm. Otherwise, mostly cloudy, with a high near 52.

Saturday Night

Rain likely. Patchy fog. Otherwise, mostly cloudy, with a low around 44.

Sunday

A chance of rain. Mostly cloudy, with a high near 52.

Sunday Night

A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 44.