June Weather in Harriston, Canada

Last updated: June 18, 2025

In Harriston, Canada during June, the average temperature hovers around 18°C (64°F). Expect a minimum of 3°C (38°F) and a maximum of 31°C (89°F), creating a comfortable range for various activities. Rainfall is typical, with an average precipitation amount of 106 mm (4.2 in) spread over 11 days, contributing to a humidity level of 81%. Prepare for a blend of pleasant warmth and occasional showers!

June Temperature in Harriston

In June in Harriston, the average temperature is 18°C (64°F). The maximum can reach 31°C (89°F) and the minimum can be as low as 3°C (38°F). This moderate climate makes Harriston a great destination for travelers seeking pleasant weather.

June Weather in Harriston: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Harriston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harriston, June typically has an average temperature of 18°C (64°F), with highs reaching up to 31°C (89°F) and lows dropping to around 3°C (38°F).

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

June Precipitation in Harriston

In Harriston in June, the precipitation amount is 106 mm (4.2 in) spread over a duration of 11 days.

June Precipitation Trends in Harriston

The chart displays monthly precipitation patterns in Harriston, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Harriston, June typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 11 days.

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

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Millimeters (mm) Inches (in)

June Humidity in Harriston

In Harriston in June, humidity is 81%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making travel both refreshing and slightly stifling at the same time.

June Average Humidity in Harriston

This chart illustrates the average monthly humidity levels in Harriston, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Harriston is approximately 81%, offering insight into how humid the weather typically is during this month.

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

June UV Index in Harriston

In Harriston in June, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Harriston.

Maximum UV Index Levels in Harriston for June

The chart shows the monthly maximum UV Index (UVI) for Harriston in June, 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 June, the maximum UV index in Harriston typically reaches 10, which falls under the very high exposure category.

Data source: Harriston June 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 June Weather in Harriston Compares to Other Months

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

This table compares monthly weather conditions in Harriston, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	76 mm (3.0 inches)	90%	low
February Weather	-6°C (22°F)	83 mm (3.3 inches)	90%	moderate
March Weather	-1°C (30°F)	70 mm (2.8 inches)	87%	moderate
April Weather	5°C (41°F)	107 mm (4.2 inches)	87%	very high
May Weather	12°C (54°F)	103 mm (4.1 inches)	82%	very high
June Weather	18°C (64°F)	106 mm (4.2 inches)	81%	very high
July Weather	20°C (69°F)	89 mm (3.5 inches)	79%	very high
August Weather	19°C (67°F)	110 mm (4.3 inches)	80%	very high
September Weather	15°C (60°F)	94 mm (3.7 inches)	81%	high
October Weather	9°C (49°F)	111 mm (4.4 inches)	84%	moderate
November Weather	1°C (35°F)	95 mm (3.8 inches)	88%	moderate
December Weather	-3°C (28°F)	83 mm (3.2 inches)	87%	low