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

71°F

22°C

Humidity 55%
Wind Speed N 0 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 24 Sep 05:00 AM PDT
Extended Forecast for

Grand Terrace CA

  • Today

    Today: Sunny, with a high near 91. Light southwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 91 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 63. Southwest wind 5 to 10 mph.

    Low: 63 °F

    Mostly Clear

  • Thursday

    Thursday: Patchy fog between 8am and 11am. Otherwise, sunny, with a high near 85. Light southwest wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

    High: 85 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61. West wind 5 to 10 mph becoming southeast after midnight. Winds could gust as high as 20 mph.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 81. South wind 5 to 10 mph becoming north in the afternoon.

    High: 81 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 62.

    Low: 62 °F

    Patchy Fog

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 11am. Patchy fog before 11am. Otherwise, partly sunny, with a high near 81. Chance of precipitation is 30%.

    High: 81 °F

    Chance
    T-storms and
    Patchy Fog

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 91. Light southwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Tonight
Mostly clear, with a low around 63. Southwest wind 5 to 10 mph.
Thursday
Patchy fog between 8am and 11am. Otherwise, sunny, with a high near 85. Light southwest wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 61. West wind 5 to 10 mph becoming southeast after midnight. Winds could gust as high as 20 mph.
Friday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 81. South wind 5 to 10 mph becoming north in the afternoon.
Friday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 62.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 11am. Patchy fog before 11am. Otherwise, partly sunny, with a high near 81. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 61.
Sunday
Mostly sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 61.
Monday
Sunny, with a high near 85.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Patchy fog. Otherwise, mostly sunny, with a high near 83.
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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:
3:50 am PDT Sep 24, 2025
Forecast Valid:
5am PDT Sep 24, 2025-6pm PDT Sep 30, 2025
 
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Additional Resources

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Chance of Precipitation