Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

55°F

13°C

Humidity 36%
Wind Speed SSE 4 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 18 Apr 11:00 AM PDT
Extended Forecast for

4 Miles ENE Danville CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 48. South wind around 5 mph.

    Low: 48 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 72. South wind 5 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 21 mph.

    High: 72 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 45. West southwest wind 6 to 10 mph becoming south southeast after midnight. Winds could gust as high as 21 mph.

    Low: 45 °F

    Partly Cloudy

  • Monday

    Monday: A 40 percent chance of rain, mainly after 11am.  Partly sunny, with a high near 71. South southwest wind 6 to 11 mph, with gusts as high as 23 mph.  New precipitation amounts of less than a tenth of an inch possible.

    High: 71 °F

    Chance Rain

  • Monday Night

    Monday Night: Rain.  Low around 49. South wind 6 to 11 mph, with gusts as high as 25 mph.  Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 49 °F

    Rain

  • Tuesday

    Tuesday: Rain before 11am, then showers and possibly a thunderstorm, mainly after 11am.  High near 60. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 60 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 8pm, then rain likely, mainly between 8pm and 11pm.  Mostly cloudy, with a low around 46. Chance of precipitation is 70%.

    Low: 46 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of rain.  Mostly sunny, with a high near 63.

    High: 63 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 48. South wind around 5 mph.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 72. South wind 5 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 45. West southwest wind 6 to 10 mph becoming south southeast after midnight. Winds could gust as high as 21 mph.
Monday
A 40 percent chance of rain, mainly after 11am. Partly sunny, with a high near 71. South southwest wind 6 to 11 mph, with gusts as high as 23 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Rain. Low around 49. South wind 6 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
Rain before 11am, then showers and possibly a thunderstorm, mainly after 11am. High near 60. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers likely and possibly a thunderstorm before 8pm, then rain likely, mainly between 8pm and 11pm. Mostly cloudy, with a low around 46. Chance of precipitation is 70%.
Wednesday
A chance of rain. Mostly sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 43.
Thursday
Sunny, with a high near 68.
Thursday Night
Mostly clear, with a low around 44.
Friday
Mostly sunny, with a high near 70.
Friday Night
Partly cloudy, with a low around 47.
Saturday
Mostly sunny, with a high near 70.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Danville CA
 37.85°N 121.94°W (Elev. 1362 ft)
8:46 pm PDT Apr 18, 2026
9pm PDT Apr 18, 2026-6pm PDT Apr 25, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database