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.

Overcast

63°F

17°C

Humidity 67%
Wind Speed SW 4 MPH
Barometer 29.92 in (1013.21 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 28 Jun 03:40 AM PDT
Extended Forecast for

Grand Terrace CA

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly cloudy, with a low around 58. South wind around 5 mph.

    Low: 58 °F

    Patchy Fog

  • Sunday

    Sunday: Patchy drizzle and fog before 11am. Mostly cloudy through mid morning, then gradual clearing, with a high near 78. South wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 78 °F

    Patchy
    Drizzle and
    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 57. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Patchy Fog

  • Monday

    Monday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 80. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 57. West wind 5 to 10 mph becoming light southwest after midnight. Winds could gust as high as 20 mph.

    Low: 57 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 80.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: Patchy fog before 11am. Otherwise, sunny, with a high near 81.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 56.

    Low: 56 °F

    Clear

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 58. South wind around 5 mph.
Sunday
Patchy drizzle and fog before 11am. Mostly cloudy through mid morning, then gradual clearing, with a high near 78. South wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 57. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 80. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 57. West wind 5 to 10 mph becoming light southwest after midnight. Winds could gust as high as 20 mph.
Tuesday
Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 57.
Wednesday
Patchy fog before 11am. Otherwise, sunny, with a high near 81.
Wednesday Night
Clear, with a low around 56.
Thursday
Sunny, with a high near 84.
Thursday Night
Partly cloudy, with a low around 58.
Friday
Mostly sunny, with a high near 87.
Friday Night
Partly cloudy, with a low around 59.
Independence Day
Mostly sunny, with a high near 89.
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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:
11:57 pm PDT Jun 27, 2026
Forecast Valid:
3am PDT Jun 28, 2026-6pm PDT Jul 4, 2026
 
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