May Weather in Highland, United States

Last updated: June 24, 2025

In May, the average temperature in Highland, United States hovers around 18°C (65°F), with extremes ranging from a chilly 2°C (35°F) to a warm 34°C (93°F). Expect 139 mm (5.5 in) of precipitation over 14 days, contributing to the region's average humidity of 78%. Whether you're bracing for a cool breeze or soaking up the heat, make sure to prepare for a dynamic climate!

May Temperature in Highland

In May in Highland, the average temperature is 18°C (65°F). Maximums can reach 34°C (93°F), and minimums can be as low as 2°C (35°F). Be prepared for a wide range of temperatures when traveling during this month, so pack accordingly!

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

The chart illustrates May temperature patterns in Highland, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Highland, May typically has an average temperature of 18°C (65°F), with highs reaching up to 34°C (93°F) and lows dropping to around 2°C (35°F).

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

May Precipitation in Highland

In Highland, in May, the precipitation amount is 139 mm (5.5 in) over the course of 14 days.

May Precipitation Trends in Highland

The chart displays monthly precipitation patterns in Highland, 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 Highland, May typically receives around 139 mm (5.5 inches) of precipitation spread over approximately 14 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 Highland

In Highland in May, humidity is 78%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket, making travel quite muggy and potentially uncomfortable, as it can leave you feeling sticky and fatigued more quickly than usual.

May Average Humidity in Highland

This chart illustrates the average monthly humidity levels in Highland, 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 Highland is approximately 78%, 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 Highland

In Highland in May, 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 Highland.

Maximum UV Index Levels in Highland for May

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

Data source: Highland 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 Highland Compares to Other Months

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

This table compares monthly weather conditions in Highland, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (36°F)	60 mm (2.4 inches)	84%	moderate
February Weather	4°C (40°F)	99 mm (3.9 inches)	83%	moderate
March Weather	7°C (45°F)	89 mm (3.5 inches)	83%	high
April Weather	13°C (56°F)	94 mm (3.7 inches)	81%	very high
May Weather	18°C (65°F)	139 mm (5.5 inches)	78%	very high
June Weather	23°C (74°F)	133 mm (5.2 inches)	79%	very high
July Weather	26°C (80°F)	168 mm (6.6 inches)	74%	very high
August Weather	25°C (77°F)	148 mm (5.8 inches)	72%	very high
September Weather	21°C (71°F)	105 mm (4.1 inches)	75%	very high
October Weather	16°C (61°F)	106 mm (4.2 inches)	81%	high
November Weather	8°C (47°F)	84 mm (3.3 inches)	85%	moderate
December Weather	4°C (40°F)	95 mm (3.7 inches)	84%	moderate