Fire Weather Issues; Pacific System Moving Inland

Dry fuels, strong winds and dry weather will continue to bring elevated to critical fire weather conditions to the areas of the Plains, Midwest and Southeast today. A Pacific storm system will bring low elevation rain and heavy high elevation mountain snow to California through early week, expanding into the Pacific Northwest, Great Basin, and southern California on Tuesday. Read More >

Current conditions at

DIABLO GRANDE (DBLC1)

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

NA

57°F

14°C

Humidity 20%
Wind Speed SW 13 MPH
Barometer NA
Dewpoint 16°F (-9°C)
Visibility NA
Last update 20 Apr 09:00 AM PDT
Extended Forecast for

19 Miles ENE Mount Hamilton CA

  • Today

    Today: A 30 percent chance of rain after 3pm.  Mostly sunny, with a high near 67. South wind 9 to 14 mph, with gusts as high as 24 mph.  New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Sunny then
    Chance Rain

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then showers likely and possibly a thunderstorm between 9pm and 2am, then rain after 2am.  Low around 52. South southwest wind 6 to 14 mph, with gusts as high as 23 mph.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Showers

  • Tuesday

    Tuesday: Rain and thunderstorms before 3pm, then a chance of showers and thunderstorms between 3pm and 5pm, then showers likely and possibly a thunderstorm after 5pm.  High near 54. Southwest wind 8 to 14 mph, with gusts as high as 24 mph.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 54 °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. Southwest wind 6 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 46 °F

    Showers
    Likely then
    Chance Rain

  • Wednesday

    Wednesday: A 20 percent chance of rain before 11am.  Mostly sunny, with a high near 57. Southwest wind 6 to 8 mph becoming northwest in the afternoon.

    High: 57 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

Detailed Forecast

Today
A 30 percent chance of rain after 3pm. Mostly sunny, with a high near 67. South wind 9 to 14 mph, with gusts as high as 24 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A chance of showers and thunderstorms before 9pm, then showers likely and possibly a thunderstorm between 9pm and 2am, then rain after 2am. Low around 52. South southwest wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Rain and thunderstorms before 3pm, then a chance of showers and thunderstorms between 3pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. High near 54. Southwest wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
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. Southwest wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 20 percent chance of rain before 11am. Mostly sunny, with a high near 57. Southwest wind 6 to 8 mph becoming northwest in the afternoon.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 49.
Friday
Mostly sunny, with a high near 66.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 50.
Sunday
Mostly sunny, with a high near 62.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
19 Miles ENE Mount Hamilton CA
 37.42°N 121.32°W (Elev. 2201 ft)
9:01 am PDT Apr 20, 2026
9am PDT Apr 20, 2026-6pm PDT Apr 26, 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