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

Hazardous Weather Conditions

Current conditions at

San Bernardino Intl. Airport (KSBD)

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

Clear

82°F

28°C

Humidity 45%
Wind Speed S 3 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 28 Aug 02:20 AM PDT
Extended Forecast for

Grand Terrace CA

Extreme Heat Warning August 28, 02:38am until August 28, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 28, 02:38am until August 28, 08:00pm

    NOW until 8:00pm Fri

    Extreme Heat Warning

  • Overnight

    Low: 76 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 105. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 105 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 74. Southwest wind 5 to 10 mph becoming light south after midnight. Winds could gust as high as 20 mph.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 102. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 102 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 70. Southwest wind 10 to 15 mph becoming light and variable. Winds could gust as high as 20 mph.

    Low: 70 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 97.

    High: 97 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 67.

    Low: 67 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

Overnight
Mostly cloudy, with a low around 76. Calm wind.
Friday
Mostly sunny, with a high near 105. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Mostly clear, with a low around 74. Southwest wind 5 to 10 mph becoming light south after midnight. Winds could gust as high as 20 mph.
Saturday
Sunny, with a high near 102. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Clear, with a low around 70. Southwest wind 10 to 15 mph becoming light and variable. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 97.
Sunday Night
Clear, with a low around 67.
Monday
Sunny, with a high near 93.
Monday Night
Mostly clear, with a low around 64.
Tuesday
A slight chance of showers after 11am. Sunny, with a high near 89.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 66.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 91.
Wednesday Night
Partly cloudy, with a low around 67.
Thursday
A slight chance of showers. Mostly sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grand Terrace CA
 34.03°N 117.3°W (Elev. 1122 ft)
Last Update:
1:07 am PDT Aug 28, 2026
Forecast Valid:
2am PDT Aug 28, 2026-6pm PDT Sep 3, 2026
 
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