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.

Clear

79°F

26°C

Humidity 22%
Wind Speed WSW 10 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 01 Sep 07:55 PM PDT
Extended Forecast for

Grand Terrace CA

  • Tonight

    Tonight: Mostly clear, with a low around 63. South wind around 5 mph becoming calm after midnight.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 62. Southwest wind 5 to 10 mph becoming southeast after midnight.

    Low: 62 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 88. Light and variable wind becoming west 5 to 10 mph in the afternoon.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 62. West wind around 5 mph becoming southeast after midnight.

    Low: 62 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers, mainly after 11am. Partly sunny, with a high near 91.

    High: 91 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 63. South wind around 5 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 89. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 62. Southwest wind 5 to 10 mph becoming southeast after midnight.
Thursday
Sunny, with a high near 88. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Thursday Night
Clear, with a low around 62. West wind around 5 mph becoming southeast after midnight.
Friday
Sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 64.
Saturday
A chance of showers, mainly after 11am. Partly sunny, with a high near 91.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 68.
Sunday
A chance of showers. Partly sunny, with a high near 92.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 70.
Labor Day
A chance of showers. Mostly sunny, with a high near 93.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 68.
Tuesday
Mostly sunny, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Terrace CA
 34.04°N 117.33°W (Elev. 997 ft)
Last Update:
11:24 am PDT Sep 1, 2026
Forecast Valid:
8pm PDT Sep 1, 2026-6pm PDT Sep 8, 2026
 
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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