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.

Partly Cloudy

52°F

11°C

Humidity 87%
Wind Speed N 0 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 14 Nov 07:55 AM PST
Extended Forecast for

Grand Terrace CA

  • Today

    Today: A chance of showers before 10am. Mostly sunny, with a high near 68. South wind around 5 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 68 °F

    Chance
    Showers then
    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 52. Calm wind becoming north around 5 mph.

    Low: 52 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 70. Calm wind becoming west around 5 mph in the afternoon.

    High: 70 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 52. South wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of showers after 4pm. Partly sunny, with a high near 67. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Partly Sunny
    then Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly between 10pm and 4am. Mostly cloudy, with a low around 51. Chance of precipitation is 70%.

    Low: 51 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers before 10am. Mostly sunny, with a high near 63. Chance of precipitation is 50%.

    High: 63 °F

    Chance
    Showers then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

Detailed Forecast

Today
A chance of showers before 10am. Mostly sunny, with a high near 68. South wind around 5 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Mostly clear, with a low around 52. Calm wind becoming north around 5 mph.
Sunday
Mostly sunny, with a high near 70. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 52. South wind around 5 mph becoming calm in the evening.
Monday
A chance of showers after 4pm. Partly sunny, with a high near 67. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Showers likely, mainly between 10pm and 4am. Mostly cloudy, with a low around 51. Chance of precipitation is 70%.
Tuesday
A chance of showers before 10am. Mostly sunny, with a high near 63. Chance of precipitation is 50%.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Sunny, with a high near 64.
Wednesday Night
A chance of showers after 10pm. Mostly cloudy, with a low around 47.
Thursday
Showers likely. Mostly cloudy, with a high near 62.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 46.
Friday
A slight chance of showers. Mostly sunny, with a high near 63.
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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:
12:32 am PST Nov 14, 2026
Forecast Valid:
8am PST Nov 14, 2026-6pm PST Nov 20, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation