Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Hazardous Weather Conditions

Current conditions at

San Jose / Reid / Hillv (KRHV)

Lat: 37.33333°NLon: 121.81667°WElev: 135.0ft.

Mostly Cloudy

64°F

18°C

Humidity	63%
Wind Speed	SE 26 MPH
Barometer	29.59 in (1002.03 mb)
Dewpoint	52°F (11°C)
Visibility	10.00 mi
Last update	23 Dec 09:50 PM PST

More Information:

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

Extended Forecast for

Mount Hamilton CA

Flood Watch December 24, 02:10am until December 26, 10:00pm

Wind Advisory until December 24, 04:00am

Click here for hazard details and duration

Flood Watch

Wind Advisory

Flood Watch December 24, 02:10am until December 26, 10:00pm
Wind Advisory until December 24, 04:00am
NOW: Multiple hazards in effect
Click HERE for Details
Overnight
Low: 46 °F
Showers and
Windy
Wednesday
High: 49 °F
Showers
Wednesday Night
Low: 49 °F
Showers and
Windy
Christmas Day
High: 48 °F
Showers and
Breezy
Thursday Night
Low: 43 °F
Showers
Friday
High: 47 °F
Showers
Friday Night
Low: 41 °F
Showers
Likely then
Chance
Showers
Saturday
High: 48 °F
Chance
Showers

Detailed Forecast

Overnight

Showers and possibly a thunderstorm. Low around 46. Windy, with a south wind around 40 mph, with gusts as high as 65 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Wednesday

Showers. Steady temperature around 49. South wind 15 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Wednesday Night

Showers, with thunderstorms also possible after 4am. Steady temperature around 49. Windy, with a south wind 26 to 32 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Christmas Day

Showers likely and possibly a thunderstorm, then showers after 10am. High near 48. Breezy, with a south southwest wind 23 to 28 mph, with gusts as high as 47 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

Thursday Night

Showers and possibly a thunderstorm. Low around 43. South southwest wind around 18 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Friday

Showers. High near 47. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday Night

Showers likely and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 41. Chance of precipitation is 70%.

Saturday

A chance of showers, mainly before 10am. Mostly sunny, with a high near 48.

Saturday Night

Mostly clear, with a low around 36.

Sunday

Sunny, with a high near 50.

Sunday Night

Clear, with a low around 38.

Monday

Sunny, with a high near 54.

Monday Night

Mostly clear, with a low around 42.