August Weather in Markham, United States

Last updated: June 24, 2025

In Markham, United States, the average temperature in August hovers around 29°C (85°F). Expect a minimum of 22°C (71°F) and a sizzling maximum of 39°C (102°F). This month sees an average precipitation of 171 mm (6.7 in) over approximately 17 days, accompanied by a comfortable humidity level of 68%. Be prepared for a warm and slightly wet experience!

August Temperature in Markham

In August in Markham, the average temperature is 29°C (85°F). Maximums can reach 39°C (102°F), and minimums can be as low as 22°C (71°F). It's an ideal time to enjoy outdoor activities and explore the vibrant culture while staying hydrated and sun-protected.

August Weather in Markham: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Markham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Markham, August typically has an average temperature of 29°C (85°F), with highs reaching up to 39°C (102°F) and lows dropping to around 22°C (71°F).

Data source: Temperature data for Markham generated using information from the Copernicus Climate Change Service.

August Precipitation in Markham

In Markham in August, the precipitation amount is 171 mm (6.7 in) over the course of 17 days.

August Precipitation Trends in Markham

The chart displays monthly precipitation patterns in Markham, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Markham, August typically receives around 171 mm (6.7 inches) of precipitation spread over approximately 17 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

August Humidity in Markham

In Markham in August, humidity is 68%. With an average temperature of 29°C (85°F), this humidity feels like a thick blanket enveloping you, making traveling feel oppressive and heavy, forcing you to seek shade and stay hydrated frequently.

August Average Humidity in Markham

This chart illustrates the average monthly humidity levels in Markham, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Markham is approximately 68%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Markham

In Markham in August, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Markham.

Maximum UV Index Levels in Markham for August

The chart shows the monthly maximum UV Index (UVI) for Markham in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in Markham typically reaches 12, which falls under the extreme exposure category.

Data source: Markham August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How August Weather in Markham Compares to Other Months

Weather in Markham varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Markham, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Markham, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (56°F)	73 mm (2.9 inches)	78%	moderate
February Weather	15°C (60°F)	72 mm (2.8 inches)	81%	very high
March Weather	19°C (67°F)	70 mm (2.7 inches)	76%	very high
April Weather	22°C (72°F)	71 mm (2.8 inches)	79%	extreme
May Weather	26°C (79°F)	137 mm (5.4 inches)	79%	extreme
June Weather	28°C (83°F)	157 mm (6.2 inches)	74%	extreme
July Weather	29°C (84°F)	145 mm (5.7 inches)	71%	extreme
August Weather	29°C (85°F)	171 mm (6.7 inches)	68%	extreme
September Weather	27°C (81°F)	165 mm (6.5 inches)	73%	extreme
October Weather	23°C (74°F)	74 mm (2.9 inches)	75%	very high
November Weather	18°C (64°F)	78 mm (3.1 inches)	78%	high
December Weather	15°C (60°F)	90 mm (3.5 inches)	84%	moderate