Owen Sound (ON) Temperature by Month

Owen Sound, Ontario, Canada has an average annual maximum temperature of 12°C (54°F), ranging from -1°C (30°F) in January to 26°C (79°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

Depending on the time of the year, temperatures range from warm to very cold in Owen Sound. Nighttime lows follow the same pattern, ranging from 15°C (59°F) to -10°C (14°F).

The chart below illustrates the average maximum day and minimum night temperatures in Owen Sound by month:

The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak.

The chart below shows the average temperature throughout the year:

Owen Sound's average annual maximum temperature is 12°C (54°F). To put that in context, here's how it compares to a few well-known destinations:

Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.

On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.

Chicago, USA averages 15°C (59°F) annually, known for extreme seasonal swings, from bitterly cold winters to warm summers.

Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate, hot dry summers and mild wet winters.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Owen Sound this rarely lasts long on the ground.

For more on Owen Sound's weather, including monthly rainfall, sunshine hours, and humidity, visit our Owen Sound climate page.