| National Weather Service Forecast for:
3 Miles SE Rancho Cucamonga 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 66. Southwest wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 20 mph. |
| Monday |
Mostly sunny, with a high near 93. Light south wind becoming west 5 to 10 mph in the afternoon. |
| Monday Night |
Partly cloudy, with a low around 67. Southwest wind 5 to 10 mph becoming light in the evening. |
| Tuesday |
Sunny, with a high near 98. Light south wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph. |
| Tuesday Night |
Mostly clear, with a low around 71. Southwest wind 10 to 15 mph becoming light west in the evening. Winds could gust as high as 20 mph. |
| Wednesday |
Sunny, with a high near 104. |
| Wednesday Night |
Mostly clear, with a low around 74. |
| Thursday |
A slight chance of showers after 11am. Mostly sunny, with a high near 99. |
| Thursday Night |
A slight chance of showers before 11pm. Partly cloudy, with a low around 69. |
| Friday |
A slight chance of showers after 11am. Mostly sunny, with a high near 93. |
| 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 91. |
| Saturday Night |
A slight chance of showers. Mostly clear, with a low around 66. |
| Sunday |
A slight chance of showers. Sunny, with a high near 91. |
Forecast from NOAA-NWS for 3 Miles SE Rancho Cucamonga CA.
