Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

Lat: 37.66083°NLon: 122.11833°WElev: 46.0ft.

Overcast

60°F

16°C

Humidity	74%
Wind Speed	SSE 18 MPH
Barometer	29.6 in (1002.37 mb)
Dewpoint	52°F (11°C)
Visibility	9.00 mi
Last update	24 Dec 06:54 PM PST

More Information:

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

Extended Forecast for

2 Miles SSE Union City CA

Flood Watch December 24, 07:13pm until December 26, 10:00pm

Wind Advisory December 24, 08:00pm until December 25, 10:00am

Click here for hazard details and duration

Flood Watch

Wind Advisory

Flood Watch December 24, 07:13pm until December 26, 10:00pm
NOW until 10:00pm Fri
Flood Watch
Tonight
Low: 52 °F
Severe
Thunderstorms
and Breezy
Christmas Day
High: 57 °F
Severe
Thunderstorms
and Breezy
Thursday Night
Low: 53 °F
Severe
Thunderstorms
and Breezy
then Showers
Likely
Friday
High: 56 °F
Showers
Friday Night
Low: 43 °F
Chance
Showers
Saturday
High: 54 °F
Slight Chance
Showers then
Mostly Sunny
Saturday Night
Low: 37 °F
Mostly Clear
Sunday
High: 54 °F
Sunny

Detailed Forecast

Tonight

Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 52. Breezy, with a south southeast wind 20 to 28 mph, with gusts as high as 48 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Christmas Day

Showers and possibly a thunderstorm before 1pm, then showers between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. Some of the storms could be severe. High near 57. Breezy, with a south wind 15 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Showers and possibly a thunderstorm before 10pm, then showers likely. Some of the storms could be severe. Steady temperature around 53. Breezy, with a south wind 15 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Friday

Showers. High near 56. South wind around 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Friday Night

A 50 percent chance of showers, mainly before 4am. Mostly cloudy, with a low around 43. South southeast wind 3 to 6 mph. New precipitation amounts of less than a tenth of an inch possible.

Saturday

A 20 percent chance of showers before 10am. Partly sunny, with a high near 54.

Saturday Night

Mostly clear, with a low around 37.

Sunday

Sunny, with a high near 54.

Sunday Night

Patchy frost after 2am. Otherwise, mostly clear, with a low around 36.

Monday

Areas of frost before 8am. Otherwise, sunny, with a high near 56.

Monday Night

Patchy frost. Otherwise, mostly clear, with a low around 38.