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

99°F

37°C

Humidity 16%
Wind Speed WNW 9 MPH
Barometer 29.76 in (1007.79 mb)
Dewpoint 45°F (7°C)
Visibility 7.00 mi
Heat Index95°F (35°C)
Last update 18 Jun 03:53 PM PDT
Extended Forecast for

Grand Terrace CA

Heat Advisory June 18, 04:21pm until June 18, 08:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory June 18, 04:21pm until June 18, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • Tonight

    Low: 63 °F

    Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 94. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 94 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 62. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 62 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 88. Light southwest wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57. Southwest wind 5 to 10 mph becoming light and variable after midnight.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 55.

    Low: 55 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 83.

    High: 83 °F

    Patchy Fog
    then Sunny

Detailed Forecast

Tonight
Clear, with a low around 63. West wind 5 to 10 mph, with gusts as high as 20 mph.
Juneteenth
Sunny, with a high near 94. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Clear, with a low around 62. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 88. Light southwest wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 57. Southwest wind 5 to 10 mph becoming light and variable after midnight.
Saturday
Sunny, with a high near 81.
Saturday Night
Increasing clouds, with a low around 55.
Sunday
Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 83.
Sunday Night
Mostly clear, with a low around 57.
Monday
Sunny, with a high near 85.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Sunny, with a high near 85.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Sunny, with a high near 89.
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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:
12:57 pm PDT Jun 18, 2025
Forecast Valid:
4pm PDT Jun 18, 2025-6pm PDT Jun 25, 2025
 
Forecast Discussion
 
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Additional Resources

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