Weather in Ontario, United States 🇺🇸
Weather Forecast in Ontario
In Ontario right now it is 26°C and partly cloudy, feeling like 26°C. Humidity is 58% with winds around 7 km/h, and the UV index is 6 (high). Over the next few days, temperatures in Ontario range from about 19°C to 38°C. ⚠️ High Surf Advisory issued July 19 at 8:19PM PDT until July 21 at 11:00PM PDT by NWS San Diego CA
Hourly Forecast for Ontario
14-Day Forecast for Ontario
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Additional Forecasts for Ontario
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Historical Weather
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Best Time to Be Outside in Ontario Today
The most comfortable window in Ontario today looks like 19:00 to 19:00, when it is around 30°C. It should stay dry through that window. No significant rain is expected in the next several hours.
Frequently Asked Questions about Weather in Ontario
What is the temperature in Ontario right now?
The current temperature in Ontario is 26°C (78°F), partly cloudy (feels like 26°C).
What's the weather like in Ontario right now?
Conditions in Ontario right now: Partly cloudy, humidity 58%, wind 7 km/h SW.
What is today's forecast for Ontario?
Today in Ontario: high 38°C, low 19°C, sunny. Chance of rain: 2%.
What is the 7-day weather forecast for Ontario?
Daily highs and lows for Ontario:
- 2026-07-20: 38°C / 19°C
- 2026-07-21: 35°C / 23°C
- 2026-07-22: 36°C / 23°C
- 2026-07-23: 39°C / 25°C
- 2026-07-24: 38°C / 25°C
- 2026-07-25: 36°C / 25°C
- 2026-07-26: 39°C / 26°C
Is it going to rain in Ontario today?
There is a 2% chance of rain in Ontario today.
What is the wind speed in Ontario right now?
Wind in Ontario is currently 7 km/h (4 mph) from the SW.
What is the UV index in Ontario right now?
The UV index in Ontario is currently 5.8 (moderate). Sun protection is recommended when the index is 3 or higher.
