Ontario (OR) Climate by Month
The temperature in Ontario can vary quite a bit throughout the year.
Temperatures can be very warm during the warmest months,
and cold during the cooler months.
The area is known for its low rain/snowfall.
Now, let’s explore all the climate details to give you a full picture.
Average day and night temperature
Visitors to Ontario can expect significant temperature changes throughout the year. Average daytime temperatures range from a very warm 35°C in July, the warmest time of the year, to a chilly 2°C during cooler months like January. At night, temperatures typically average around -6°C during these months.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
Ontario experiences desert-like conditions in terms of precipitation with almost no rain/snowfall, generally receiving 232 mm annually. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, December receives moderate snow/rainfall, averaging 45 mm of precipitation, recorded across 13 snowy/rainy days. In contrast, the drier season, July brings less rainfall, with 3.8 mm over 2 rainy days.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
The best time of year to visit Ontario in the United States of America
Other facts from our historical weather data:The hottest season / summer takes place in June, July, August and September.
July has an average maximum temperature of 35°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of 2°C.
December tops the wettest month list with 45 mm of rainfall.
July is the driest month with 4 mm of precipitation.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
