Average humidity in Thornhill

On this page you find more information about the monthly relative humidity over the year in Thornhill (Ontario), Canada.

Thornhill's humidity levels vary throughout the year. The highest levels occur in September, reaching 87% (very high), while the lowest is recorded in April at 76%.

Throughout the year, the average humidity in Thornhill is 81%.

Humidity plays an important role in how temperatures are felt. During the warmest month, July, the maximum average temperature is around 27°C. Combined with very high humidity during this period, the temperature can feel even warmer than the thermometer shows.

During the coldest month, January, the maximum average temperature is around -0°C. This period has very high humidity. When winter temperatures are low and humidity is high, it can make the air feel even colder than it actually is. Check out our detailed temperature page for more information.