Weather in Ontario, California for July 2026
High Surf Advisory - See hour by hour.
Until now, July 2026 in Ontario has been nearly identical to the historical average, with a temperature of 33.6 °C (showing only a slight deviation of -0.1 °C).
The forecast for the next days in Ontario predicts temperatures to be around 37 °C, close to the historical average.
In general, the average temperature in Ontario at the beginning of July is 33.3 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 38.4 °C by the end of July.
Precipitation in Ontario during July is a rare event, with an average of fewer than 2 rainy days.
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Ontario Weather July
Temperatures trend during July in Ontario
July weather in Ontario day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jul. 1 |  Sunny | 33° /17° | 0 mm | 10 | |
| Jul. 2 | Sunny | 33° /16° | 0 mm | 10 | |
| Jul. 3 | Sunny | 34° /17° | 0 mm | 10 | |
| Jul. 4 | Sunny | 33° /17° | 0 mm | 10 | |
| Jul. 5 | Sunny | 34° /18° | 0 mm | 10 | |
| Jul. 6 | Sunny | 33° /17° | 0 mm | 10 | |
| Jul. 7 | Sunny | 33° /16° | 0 mm | 9 | |
| Jul. 8 | Sunny | 34° /17° | 0 mm | 9 | |
| Jul. 9 | Sunny | 35° /20° | 0 mm | 10 | |
| Jul. 10 | Sunny | 35° /18° | 0 mm | 10 | |
| Jul. 11 | Sunny | 35° /18° | 0 mm | 10 | |
| Jul. 12 | Sunny | 32° /18° | 0 mm | 10 | |
| Jul. 13 | Sunny | 33° /19° | 1.1 mm | 10 | |
| Jul. 14 | Sunny | 34° /18° | 0 mm | 9 | |
| Jul. 15 | Sunny | 35° /19° | 0 mm | 9 | |
| Jul. 16 | Sunny | 34° /19° | 0 mm | 9 | |
| Jul. 17 | Sunny | 33° /18° | 0 mm | 9 | |
| Jul. 18 | Sunny | 34° /19° | 0.1 mm | 9 | |
| Jul. 19 | Sunny | 38° /19° | 0 mm | 11.6 | |
| Jul. 20 | Sunny | 34° /22° | 0 mm | 11.4 | |
| Jul. 21 | Sunny | 34° /22° | 0 mm | 11.3 | |
| Jul. 22 | Sunny | 36° /23° | 0 mm | 11.5 | |
| Jul. 23 | Sunny | 38° /24° | 0 mm | 9 | |
| Jul. 24 | Sunny | 37° /25° | 0 mm | 9 | |
| Jul. 25 | Sunny | 38° /24° | 0 mm | 9 | |
| Jul. 26 | Sunny | 38° /25° | 0 mm | 9 | |
| Jul. 27 | Sunny | 39° /25° | 0 mm | 9 | |
| Jul. 28 | Sunny | 39° /25° | 0 mm | 9 | |
| Jul. 29 | Sunny | 41° /26° | 0 mm | 10 | |
| Jul. 30 | Sunny | 37° /27° | 0 mm | 9 | |
| Jul. 31 | Sunny | 37° /26° | 0 mm | 9 | |
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Ontario in July - FAQ
What are the expected maximum and minimum temperatures in Ontario during July?
How much rainfall should be expected in Ontario during July?
What are the typical wind conditions in Ontario during July?
July rainfall patterns in Ontario
UV exposure in Ontario during July
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Where is Ontario?Get accurate weather forecasts for Ontario, located at latitude 34.063 and longitude -117.651. Stay updated with localized weather information tailored for Ontario.