| National Weather Service Forecast for:
Rancho Cucamonga CA Issued by: National Weather Service San Diego, CA |
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| Updated: 1:38 pm PST Feb 2, 2026 | ||||||||||||||||||
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| Tonight |
Mostly clear, with a low around 52. West wind around 5 mph becoming calm in the evening. |
| Tuesday |
Sunny, with a high near 84. Light and variable wind becoming north 5 to 10 mph in the afternoon. |
| Tuesday Night |
Clear, with a low around 57. North wind 5 to 10 mph. |
| Wednesday |
Sunny, with a high near 84. Breezy, with a north wind 20 to 25 mph, with gusts as high as 35 mph. |
| Wednesday Night |
Mostly clear, with a low around 56. North wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph. |
| Thursday |
Mostly sunny, with a high near 80. |
| Thursday Night |
Mostly cloudy, with a low around 55. |
| Friday |
Partly sunny, with a high near 73. |
| Friday Night |
Partly cloudy, with a low around 52. |
| Saturday |
Mostly sunny, with a high near 72. |
| Saturday Night |
Mostly clear, with a low around 52. |
| Sunday |
Sunny, with a high near 76. |
| Sunday Night |
Partly cloudy, with a low around 52. |
| Monday |
A slight chance of showers. Partly sunny, with a high near 72. |
Forecast from NOAA-NWS for Rancho Cucamonga CA.
