| National Weather Service Forecast for:
Ontario International Arpt CA Issued by: National Weather Service San Diego, CA |
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| Updated: 1:10 pm PDT Jun 9, 2025 | ||||||||||||||||||
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| Overnight |
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 62. West wind around 5 mph. |
| Tuesday |
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 92. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph. |
| Tuesday Night |
Partly cloudy, with a low around 64. West wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph. |
| Wednesday |
Mostly sunny, with a high near 91. Light southwest wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 25 mph. |
| Wednesday Night |
Mostly clear, with a low around 63. West wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 20 mph. |
| Thursday |
Mostly sunny, with a high near 90. |
| Thursday Night |
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 64. |
| Friday |
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 89. |
| Friday Night |
Partly cloudy, with a low around 64. |
| Saturday |
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 93. |
| Saturday Night |
Partly cloudy, with a low around 65. |
| Sunday |
Sunny, with a high near 95. |
| Sunday Night |
Mostly clear, with a low around 66. |
| Monday |
Sunny, with a high near 94. |
Forecast from NOAA-NWS for Ontario International Arpt CA.
