Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Mid-Atlantic; Heavy Rain & Isolated Severe Thunderstorms in Southern California

Snow squalls are likely to cross the Lower Great Lakes this evening and the Ohio Valley through the interior Northeast/northern Mid-Atlantic overnight, before potentially reaching the I-95 corridor from D.C. to New York City early New Year’s Day morning. Heavy rain and isolated severe thunderstorms will impact coastal southern California including Los Angeles tonight into early on New Year's Day. Read More >

Current conditions at

DIABLO GRANDE (DBLC1)

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

46°F

8°C

Humidity	92%
Wind Speed	WSW 2 MPH
Barometer	NA
Dewpoint	44°F (7°C)
Visibility	NA
Last update	31 Dec 03:00 PM PST

More Information:

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

Extended Forecast for

20 Miles E Mount Hamilton CA

This Afternoon
High: 50 °F
Rain Likely
and Patchy
Fog
Tonight
Low: 46 °F
Rain and
Patchy Fog
New Year's Day
High: 55 °F
Rain
Thursday Night
Low: 46 °F
Rain Likely
then Chance
Rain
Friday
High: 55 °F
Mostly Cloudy
then Chance
Rain
Friday Night
Low: 51 °F
Rain
Saturday
High: 55 °F
Showers
Saturday Night
Low: 50 °F
Showers
Sunday
High: 53 °F
Showers

Detailed Forecast

This Afternoon

Rain likely. Patchy fog. Otherwise, cloudy, with a high near 50. South southeast wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Tonight

Rain. Patchy fog. Low around 46. South southeast wind 6 to 9 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

New Year's Day

Rain. High near 55. South southeast wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Thursday Night

Rain likely, mainly before 10pm. Mostly cloudy, with a low around 46. South wind around 9 mph. Chance of precipitation is 60%.

Friday

A 30 percent chance of rain after 4pm. Mostly cloudy, with a high near 55. South southeast wind 10 to 16 mph, with gusts as high as 26 mph.

Friday Night

Rain, mainly after 10pm. Low around 51. Chance of precipitation is 80%.

Saturday

Rain before 1pm, then showers and possibly a thunderstorm after 1pm. High near 55. Chance of precipitation is 100%.

Saturday Night

Showers and possibly a thunderstorm before 4am, then rain after 4am. Cloudy, with a low around 50.

Sunday

Rain before 10am, then showers and possibly a thunderstorm after 10am. Cloudy, with a high near 53.