| National Weather Service Forecast for:
Rancho Cucamonga CA Issued by: National Weather Service San Diego, CA |
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| Updated: 1:07 pm PDT Jul 24, 2025 | ||||||||||||||||||
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| Overnight |
Mostly clear, with a low around 58. Southwest wind around 5 mph becoming calm. |
| Friday |
Sunny, with a high near 82. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 20 mph. |
| Friday Night |
Partly cloudy, with a low around 56. Southwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph. |
| Saturday |
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 80. Light south wind becoming southwest 5 to 10 mph in the afternoon. |
| Saturday Night |
Mostly clear, with a low around 57. Southwest wind 5 to 10 mph becoming light west after midnight. |
| Sunday |
Sunny, with a high near 86. |
| Sunday Night |
Mostly clear, with a low around 60. |
| Monday |
Sunny, with a high near 90. |
| Monday Night |
Mostly clear, with a low around 62. |
| Tuesday |
Sunny, with a high near 92. |
| Tuesday Night |
Mostly clear, with a low around 64. |
| Wednesday |
Sunny, with a high near 93. |
| Wednesday Night |
Mostly clear, with a low around 64. |
| Thursday |
Sunny, with a high near 92. |
Forecast from NOAA-NWS for Rancho Cucamonga CA.
