| National Weather Service Forecast for:
Grand Terrace CA Issued by: National Weather Service San Diego, CA |
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| Updated: 12:29 am PDT Jun 22, 2026 | ||||||||||||||||||
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| Today |
Sunny, with a high near 90. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph. |
| Tonight |
Mostly clear, with a low around 62. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. |
| Tuesday |
Sunny, with a high near 96. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph. |
| Tuesday Night |
Partly cloudy, with a low around 67. West wind 5 to 10 mph becoming light after midnight. |
| Wednesday |
Mostly sunny, with a high near 96. Light southwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 20 mph. |
| Wednesday Night |
Mostly clear, with a low around 63. |
| Thursday |
Sunny, with a high near 93. |
| Thursday Night |
Mostly clear, with a low around 61. |
| Friday |
Sunny, with a high near 90. |
| Friday Night |
Clear, with a low around 59. |
| Saturday |
Sunny, with a high near 88. |
| Saturday Night |
Mostly clear, with a low around 58. |
| Sunday |
Mostly sunny, with a high near 82. |
Forecast from NOAA-NWS for Grand Terrace CA.
