Critical Fire Weather in the High Plains; Heavy Snow in the Western Mountains and Northern Plains

Gusty winds and low relative humidity will bring critical fire weather to the central and southern High Plains Wednesday. Two Pacific storms will continue impacting the mountains of the western U.S. into Thursday with gusty winds and heavy snow. Heavy snow and gusty winds will continue to impact the northern Plains into the central Great Lakes Wednesday. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

Lat: 37.881699°NLon: 121.914173°WElev: 3904.0ft.

26°F

-3°C

Humidity	98%
Wind Speed	N 0 MPH
Barometer	NA
Dewpoint	26°F (-3°C)
Visibility	NA
Last update	18 Feb 03:40 AM PST

More Information:

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

Extended Forecast for

6 Miles NE San Ramon CA

Overnight
Low: 34 °F
Frost
Wednesday
High: 42 °F
Rain/Snow
Likely
Wednesday Night
Low: 40 °F
Chance Rain
then Rain
Thursday
High: 43 °F
Breezy. Rain
then Chance
Rain/Snow
Thursday Night
Low: 33 °F
Slight Chance
Rain/Snow
then Mostly
Clear
Friday
High: 46 °F
Areas Frost
then Mostly
Sunny
Friday Night
Low: 36 °F
Mostly Cloudy
Saturday
High: 51 °F
Chance Rain
Saturday Night
Low: 46 °F
Rain and
Breezy

Detailed Forecast

Overnight

Widespread frost, mainly between 4am and 5am. Otherwise, partly cloudy, with a low around 34. North northwest wind around 9 mph, with gusts as high as 18 mph.

Wednesday

Rain and snow likely before 1pm, then a chance of rain between 1pm and 4pm. Widespread frost before 7am. Otherwise, partly sunny, with a high near 42. South southwest wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 60%. Little or no snow accumulation expected.

Wednesday Night

Rain, mainly after 1am. Steady temperature around 40. Southwest wind 5 to 11 mph becoming south southeast in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Thursday

Rain before 4pm, then a slight chance of rain and snow. High near 43. Breezy, with a west wind 9 to 14 mph increasing to 18 to 23 mph in the morning. Winds could gust as high as 38 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Thursday Night

A slight chance of rain and snow before 10pm. Mostly clear, with a low around 33. West wind 10 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

Friday

Areas of frost before 9am. Otherwise, mostly sunny, with a high near 46.

Friday Night

Mostly cloudy, with a low around 36.

Saturday

A chance of rain, mainly after 4pm. Partly sunny, with a high near 51.

Saturday Night

Rain, mainly after 10pm. Mostly cloudy, with a low around 46. Breezy.

Sunday

Rain. Mostly cloudy, with a high near 56. Breezy.

Sunday Night

Rain. Cloudy, with a low around 51. Breezy.