May Weather in Trail, Canada

Last updated: June 18, 2025

In Trail, Canada, the average temperature in May hovers around 12°C (54°F), with a minimum dipping to -3°C (27°F) and a maximum soaring to 28°C (82°F). Expect about 68 mm (2.7 in) of precipitation spread over 11 days, and humidity levels that are notably high at 82%. Make sure to pack accordingly!

May Temperature in Trail

In May in Trail, the average temperature is 12°C (54°F). The maximum can reach 28°C (82°F) while the minimum can drop as low as -3°C (27°F). This makes it a great time to visit Trail for travelers seeking to experience a diverse range of weather, from warm days to cooler nights.

May Weather in Trail: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Trail, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trail, May typically has an average temperature of 12°C (54°F), with highs reaching up to 28°C (82°F) and lows dropping to around -3°C (27°F).

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

May Precipitation in Trail

In Trail in May, the total precipitation amount is 68 mm (2.7 in) spread over a duration of 11 days.

May Precipitation Trends in Trail

The chart displays monthly precipitation patterns in Trail, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Trail, May typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 11 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Trail

In Trail in May humidity is 82%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and sweat-inducing, which can be quite uncomfortable for traveling.

May Average Humidity in Trail

This chart illustrates the average monthly humidity levels in Trail, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Trail is approximately 82%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Trail

In Trail in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Trail.

Maximum UV Index Levels in Trail for May

The chart shows the monthly maximum UV Index (UVI) for Trail in May, 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 May, the maximum UV index in Trail typically reaches 9, which falls under the very high exposure category.

Data source: Trail May 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 May Weather in Trail Compares to Other Months

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

This table compares monthly weather conditions in Trail, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (24°F)	94 mm (3.7 inches)	90%	low
February Weather	-5°C (24°F)	80 mm (3.2 inches)	91%	moderate
March Weather	1°C (34°F)	84 mm (3.3 inches)	89%	moderate
April Weather	5°C (42°F)	83 mm (3.3 inches)	85%	high
May Weather	12°C (54°F)	68 mm (2.7 inches)	82%	very high
June Weather	16°C (61°F)	53 mm (2.1 inches)	81%	very high
July Weather	20°C (69°F)	17 mm (0.7 inches)	84%	very high
August Weather	20°C (68°F)	28 mm (1.1 inches)	75%	very high
September Weather	14°C (57°F)	56 mm (2.2 inches)	74%	high
October Weather	5°C (42°F)	79 mm (3.1 inches)	85%	moderate
November Weather	1°C (33°F)	102 mm (4.0 inches)	88%	low
December Weather	-4°C (25°F)	103 mm (4.1 inches)	93%	low