May Weather in Grayson, United States

Last updated: June 24, 2025

In May, the average temperature in Grayson, United States hovers around 20°C (68°F). Expect a range where the minimum dips to 5°C (42°F) and the maximum can soar up to 39°C (103°F). With an average humidity of 71%, this month also brings about 18 mm (0.7 in) of precipitation over approximately 2 days. Prepare for diverse weather conditions!

May Temperature in Grayson

In May in Grayson, the average temperature is 20°C (68°F). Maximum can reach 39°C (103°F), and minimum can be as low as 5°C (42°F). This range makes Grayson an ideal destination for travelers seeking a mix of warm days and cooler nights.

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

The chart illustrates May temperature patterns in Grayson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grayson, May typically has an average temperature of 20°C (68°F), with highs reaching up to 39°C (103°F) and lows dropping to around 5°C (42°F).

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

May Precipitation in Grayson

In Grayson in May, the precipitation amount is 18 mm (0.7 in) over the course of 2 days.

May Precipitation Trends in Grayson

The chart displays monthly precipitation patterns in Grayson, 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 Grayson, May typically receives around 18 mm (0.7 inches) of precipitation spread over approximately 2 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 Grayson

In Grayson in May, humidity is 71%. With an average temperature of 20°C (68°F), this humidity feels like a warm, moist embrace that can quickly lead to discomfort for travelers. The air clings to your skin, making even short walks feel more strenuous, while reaching for a refreshing drink becomes essential to stay hydrated.

May Average Humidity in Grayson

This chart illustrates the average monthly humidity levels in Grayson, 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 Grayson is approximately 71%, 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 Grayson

In Grayson 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 Grayson.

Maximum UV Index Levels in Grayson for May

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

Data source: Grayson 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 Grayson Compares to Other Months

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

This table compares monthly weather conditions in Grayson, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	93 mm (3.7 inches)	82%	moderate
February Weather	11°C (52°F)	72 mm (2.8 inches)	84%	moderate
March Weather	13°C (55°F)	80 mm (3.1 inches)	82%	very high
April Weather	16°C (61°F)	31 mm (1.2 inches)	78%	very high
May Weather	20°C (68°F)	18 mm (0.7 inches)	71%	very high
June Weather	25°C (76°F)	2 mm (0.1 inches)	64%	extreme
July Weather	27°C (81°F)	0 mm (0.0 inches)	58%	extreme
August Weather	26°C (80°F)	0 mm (0.0 inches)	54%	very high
September Weather	24°C (75°F)	1 mm (0.1 inches)	55%	very high
October Weather	19°C (66°F)	16 mm (0.6 inches)	62%	high
November Weather	13°C (56°F)	29 mm (1.1 inches)	78%	moderate
December Weather	10°C (50°F)	78 mm (3.1 inches)	80%	moderate