National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

NWS Sacramento Changes to Public and Fire Weather Zones Coming April 16, 2026

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Current conditions at

DIABLO GRANDE (DBLC1)

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

NA

62°F

17°C

Humidity 56%
Wind Speed SSW 2 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Last update 09 Apr 12:00 AM PDT
Extended Forecast for

15 Miles S Tracy CA

  • Overnight

    Overnight: Partly cloudy, with a low around 49. West southwest wind around 7 mph.

    Low: 49 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before 3pm, then a chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 69. Light and variable wind becoming west southwest 5 to 7 mph in the afternoon. Chance of precipitation is 30%.

    High: 69 °F

    Partly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of rain and thunderstorms. Partly cloudy, with a low around 48. Southwest wind around 7 mph becoming south southeast after midnight. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 48 °F

    Chance Rain

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 62. South wind 5 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 62 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 8pm, then rain, mainly after 8pm. Low around 45. Southwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    Low: 45 °F

    Showers

  • Saturday

    Saturday: Rain, mainly before 2pm, then showers and possibly a thunderstorm after 2pm. High near 57. Chance of precipitation is 90%.

    High: 57 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 8pm, then rain, mainly after 8pm. Low around 39. Chance of precipitation is 90%.

    Low: 39 °F

    Showers

  • Sunday

    Sunday: Rain likely, then showers and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 52.

    High: 52 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of rain before 11pm. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Chance Rain
    then Partly
    Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 49. West southwest wind around 7 mph.
Thursday
A slight chance of showers and thunderstorms before 3pm, then a chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 69. Light and variable wind becoming west southwest 5 to 7 mph in the afternoon. Chance of precipitation is 30%.
Thursday Night
A chance of rain and thunderstorms. Partly cloudy, with a low around 48. Southwest wind around 7 mph becoming south southeast after midnight. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm. High near 62. South wind 5 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and possibly a thunderstorm before 8pm, then rain, mainly after 8pm. Low around 45. Southwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Saturday
Rain, mainly before 2pm, then showers and possibly a thunderstorm after 2pm. High near 57. Chance of precipitation is 90%.
Saturday Night
Showers and possibly a thunderstorm before 8pm, then rain, mainly after 8pm. Low around 39. Chance of precipitation is 90%.
Sunday
Rain likely, then showers and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 52.
Sunday Night
A chance of rain before 11pm. Mostly cloudy, with a low around 38.
Monday
Mostly sunny, with a high near 57.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Sunny, with a high near 64.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Mostly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles S Tracy CA
 37.52°N 121.46°W (Elev. 1969 ft)
Last Update:
11:31 pm PDT Apr 8, 2026
Forecast Valid:
12am PDT Apr 9, 2026-6pm PDT Apr 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation