| National Weather Service Forecast for:
Grand Terrace CA Issued by: National Weather Service San Diego, CA |
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| Updated: 12:05 pm PDT Jul 12, 2026 | ||||||||||||||||||
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| Tonight |
Partly cloudy, with a low around 67. West wind 5 to 10 mph becoming light and variable after midnight. |
| Monday |
Increasing clouds, with a high near 94. Light southwest wind becoming west 5 to 10 mph in the afternoon. |
| Monday Night |
Mostly cloudy, with a low around 68. West wind 5 to 10 mph becoming light southwest after midnight. |
| Tuesday |
Sunny, with a high near 100. Light west wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph. |
| Tuesday Night |
Mostly clear, with a low around 72. West wind 5 to 10 mph becoming light northwest in the evening. Winds could gust as high as 20 mph. |
| Wednesday |
Sunny, with a high near 106. |
| Wednesday Night |
Mostly clear, with a low around 75. |
| Thursday |
A chance of showers after 11am. Mostly sunny, with a high near 102. |
| Thursday Night |
A slight chance of showers before 11pm. Partly cloudy, with a low around 70. |
| Friday |
A chance of showers after 11am. Mostly sunny, with a high near 95. |
| Friday Night |
A slight chance of showers. Partly cloudy, with a low around 67. |
| Saturday |
A slight chance of showers. Mostly sunny, with a high near 93. |
| Saturday Night |
A slight chance of showers. Mostly clear, with a low around 67. |
| Sunday |
A slight chance of showers. Sunny, with a high near 92. |
Forecast from NOAA-NWS for Grand Terrace CA.
