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

San Bernardino Intl. Airport (KSBD)

Lat: 34.09027°NLon: 117.24705°WElev: 1086.0ft.

heavy rain

55°F

13°C

Humidity 76%
Wind Speed SW 11 MPH
Barometer 29.92 in (1013.21 mb)
Dewpoint 48°F (9°C)
Visibility 3.00 mi
Last update 17 Nov 08:51 PM PST
Extended Forecast for

Grand Terrace CA

  • Tonight

    Tonight: Showers and possibly a thunderstorm. Low around 47. South wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 47 °F

    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Partly sunny, with a high near 59. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 59 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers before 10pm. Partly cloudy, with a low around 43. West wind around 5 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 61. Calm wind becoming west around 5 mph in the afternoon.

    High: 61 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 44. West wind around 5 mph becoming east after midnight.

    Low: 44 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers, mainly after 4pm. Partly sunny, with a high near 58. Chance of precipitation is 30%.

    High: 58 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely, mainly after 10pm. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.

    Low: 47 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers. Partly sunny, with a high near 59.

    High: 59 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers, mainly before 10pm. Partly cloudy, with a low around 46.

    Low: 46 °F

    Chance
    Showers

Detailed Forecast

Tonight
Showers and possibly a thunderstorm. Low around 47. South wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 59. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of showers before 10pm. Partly cloudy, with a low around 43. West wind around 5 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Sunny, with a high near 61. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 44. West wind around 5 mph becoming east after midnight.
Thursday
A chance of showers, mainly after 4pm. Partly sunny, with a high near 58. Chance of precipitation is 30%.
Thursday Night
Showers likely, mainly after 10pm. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.
Friday
A chance of showers. Partly sunny, with a high near 59.
Friday Night
A chance of showers, mainly before 10pm. Partly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
Sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 48.
Monday
Sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Terrace CA
 34.03°N 117.3°W (Elev. 1122 ft)
Last Update:
1:10 pm PST Nov 17, 2025
Forecast Valid:
10pm PST Nov 17, 2025-6pm PST Nov 24, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation