May Weather in Harlan, United States

Last updated: June 24, 2025

In Harlan, United States, the average temperature in May hovers around 17°C (62°F). While the mercury can dip as low as -1°C (30°F), it can also soar to a sweltering 34°C (94°F). Expect about 129 mm (5.1 in) of precipitation spread over 15 days, contributing to an average humidity of a steamy 81%.

May Temperature in Harlan

In May in Harlan, the average temperature is 17°C (62°F), with maximums reaching up to 34°C (94°F) and minimums dropping as low as -1°C (30°F). This diverse temperature range makes Harlan an ideal destination for travelers seeking both warm and cooler weather experiences.

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

The chart illustrates May temperature patterns in Harlan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harlan, May typically has an average temperature of 17°C (62°F), with highs reaching up to 34°C (94°F) and lows dropping to around -1°C (30°F).

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

May Precipitation in Harlan

In Harlan in May, the precipitation amount is 129 mm (5.1 in) over a span of 15 days.

May Precipitation Trends in Harlan

The chart displays monthly precipitation patterns in Harlan, 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 Harlan, May typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 15 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 Harlan

In Harlan in May, humidity is 81%. With an average temperature of 17°C (62°F), this humidity feels like a warm blanket enveloping you, making outdoor adventures feel sticky and requiring frequent breaks to stay comfortable while exploring.

May Average Humidity in Harlan

This chart illustrates the average monthly humidity levels in Harlan, 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 Harlan is approximately 81%, 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 Harlan

In Harlan 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 Harlan.

Maximum UV Index Levels in Harlan for May

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

Data source: Harlan 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 Harlan Compares to Other Months

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

This table compares monthly weather conditions in Harlan, 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 (28°F)	72 mm (2.9 inches)	85%	moderate
February Weather	-1°C (30°F)	76 mm (3.0 inches)	85%	moderate
March Weather	4°C (40°F)	101 mm (4.0 inches)	86%	high
April Weather	9°C (49°F)	96 mm (3.8 inches)	87%	very high
May Weather	17°C (62°F)	129 mm (5.1 inches)	81%	very high
June Weather	22°C (72°F)	126 mm (5.0 inches)	82%	very high
July Weather	24°C (76°F)	104 mm (4.1 inches)	81%	very high
August Weather	23°C (73°F)	100 mm (3.9 inches)	79%	very high
September Weather	20°C (68°F)	64 mm (2.5 inches)	78%	very high
October Weather	13°C (56°F)	104 mm (4.1 inches)	81%	high
November Weather	5°C (41°F)	81 mm (3.2 inches)	89%	moderate
December Weather	1°C (34°F)	59 mm (2.3 inches)	86%	low