The Ontario long range forecast indicates an extreme heatwave, with daytime highs soaring to 40°, well above the seasonal norm and 10.5 °F higher than the historical average.
The Ontario long range forecast indicates an extreme heatwave, with daytime highs soaring to 40°, well above the seasonal norm and 10.5 °F higher than the historical average.
Check out our estimated 30 days weather forecast for Ontario, this data is based on the average weather in Ontario in the last few years.
For a more accurate and detailed forecast, check out the 14 day weather for Ontario next to the desired date.