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

Current conditions at

Port Chicago (PCOC1)

Lat: 38.056°NLon: 122.0395°WElev: 0.0ft.

40°F

4°C

Humidity	NA
Wind Speed	NE 8 MPH
Barometer	30.23 in (1023.71 mb)
Dewpoint	N/A
Visibility	NA
Wind Chill	35°F (2°C)
Last update	NA

More Information:

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

Extended Forecast for

3 Miles WNW Pittsburg CA

Cold Weather Advisory until December 30, 09:00am

Dense Fog Advisory December 30, 04:27am until December 30, 10:00am

Click here for hazard details and duration

Cold Weather Advisory

Dense Fog Advisory

Cold Weather Advisory until December 30, 09:00am
Dense Fog Advisory December 30, 04:27am until December 30, 10:00am
NOW: Multiple hazards in effect
Click HERE for Details
Overnight
Low: 38 °F
Patchy Dense
Fog
Tuesday
High: 48 °F
Patchy Dense
Fog then
Cloudy
Tuesday Night
Low: 44 °F
Cloudy
Wednesday
High: 49 °F
Chance Rain
and Patchy
Fog then Rain
and Patchy
Fog
Wednesday Night
Low: 47 °F
Rain and
Patchy Fog
New Year's Day
High: 55 °F
Rain and
Patchy Fog
Thursday Night
Low: 54 °F
Showers and
Patchy Fog
Friday
High: 56 °F
Showers

Detailed Forecast

Overnight

Patchy dense fog. Otherwise, mostly cloudy, with a low around 38. East northeast wind around 7 mph.

Tuesday

Patchy dense fog before 7am. Otherwise, cloudy, with a high near 48. East wind 7 to 9 mph.

Tuesday Night

Cloudy, with a low around 44. East southeast wind around 7 mph.

Wednesday

Rain, mainly after 4pm. Patchy fog after 10am. High near 49. East northeast wind around 8 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 47. East wind 7 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

New Year's Day

Rain. Patchy fog. 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. Patchy fog before 1am. Low around 54. Chance of precipitation is 80%.

Friday

Showers likely and possibly a thunderstorm, then rain after 10am. Cloudy, with a high near 56.

Friday Night

Rain. Cloudy, with a low around 50.

Saturday

Rain likely. Cloudy, with a high near 53.

Saturday Night

Rain likely. Patchy fog. Otherwise, cloudy, with a low around 46.

Sunday

A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a high near 53.

Sunday Night

A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 46.