Unlock Historical Data
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
05:43
Sunrise
19:56
Sunset
Daily Forecast
Today
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Air Quality Data Available
Upgrade to access real-time air quality data for Ontario.
Resources
UV Index
Humidity
Frequently asked questions about weather in Ontario
How warm does it get in Ontario?
The warmest month in Ontario is August, with average high temperatures of 34°C. The average temperature during this period is around 26°C.
How cold does it get in Ontario?
The coldest month in Ontario is December, with average low temperatures of 6°C. The average temperature during this period is around 12°C.
What is the wettest time of year in Ontario?
The wettest month in Ontario is January, with an average of 100mm of precipitation.
What is the driest time of year in Ontario?
The driest month in Ontario is June, with an average of 2mm of precipitation.
Explore more weather forecasts
- Upland, California
- New York City, New York
- Montclair, California
- Los Angeles, California
- Chino, California
- Brooklyn, New York
- Rancho Cucamonga, California
- Chicago, Illinois
- Claremont, California
- Houston, Texas
- Pomona, California
- Queens, New York
- La Verne, California
- Phoenix, Arizona
- Chino Hills, California
- Philadelphia, Pennsylvania
