Ontario, CA - Weather forecast from Theweather.com. Get the Ontario, CA local hourly forecast including temperature, RealFeel, and chance of precipitation. Hi/Low, RealFeel®, precip, radar, & everything you need to be ready for the day, commute, and weekend! 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 Current conditions at Cable Airport (KCCB) Lat: 34.11161°NLon: 117.68739°WElev: 1444ft. Everything you need to be ready to step out prepared. Get the forecast for today, tonight & tomorrow's weather for Ontario, CA. Ontario Extended Forecast with high and low temperatures. Get the monthly weather forecast for Ontario, CA, including daily high/low, historical averages, to help you plan ahead. °F. Cold spot in Ontario: -23.4 °C-10.1 °F Kapuskasing AAFC Hot spot in Canada : 10.7 ° C 51.3 ° F Halifax Stanfield Int'l Airport, NS Cold spot in Canada : -41.6 ° C -42.9 ° F Shepherd Bay Airport, NU Interactive weather map allows you to pan and zoom to get unmatched weather details in your local neighborhood or half a world away from The Weather Channel and Weather.com ... Ontario, CA … for Ontario, California Current weather in Ontario and forecast for today, tomorrow, and next 14 days Find the most current and reliable 14 day weather forecasts, storm alerts, reports and information for Ontario, CA, US with The Weather Network. Find the most current and reliable 7 day weather forecasts, storm alerts, reports and information for [city] with The Weather Network. Weather conditions with updates on temperature, humidity, wind speed, snow, pressure, etc. Last 2 weeks of weather Find the most current and reliable 7 day weather forecasts, storm alerts, reports and information for [city] with The Weather Network.