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Be prepared with the most accurate 10-day forecast for Ontario, CA with highs, lows, chance of precipitation from The Weather Channel and Weather.com.
Get the current and future weather conditions for Ontario, CA, including temperature, wind, air quality, and allergy outlook. See the heat advisory, sunny and warm days, and unhealthy air quality for today and the next 10 days.
Today’s and tonight’s Ontario, CA weather forecast, weather conditions and Doppler radar from The Weather Channel and Weather.com.
1 day ago · Detailed Forecast. Tonight. Clear, with a low around 69. West wind 5 to 10 mph, with gusts as high as 20 mph. Saturday. Sunny, with a high near 98. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
- San Diego, CA
- 39°F (4°C)
- 29.91 in (1012.87 mb)
- 15%
Get the current weather conditions and forecast for Ontario, CA, including temperature, precipitation, wind, and UV index. See the sunrise and sunset times, temperature history, and more for today and the next days.
Hourly Local Weather Forecast, weather conditions, precipitation, dew point, humidity, wind from Weather.com and The Weather Channel.
Hourly weather forecast in Ontario, CA. Check current conditions in Ontario, CA with radar, hourly, and more.
