May Weather in Greybull, United States

Last updated: June 24, 2025

In Greybull, United States, the average temperature in May hovers around 13°C (56°F). However, temperatures can vary significantly, with a minimum as low as -1°C (30°F) and soaring to a maximum of 31°C (89°F). During this month, you can expect about 37 mm (1.5 in) of precipitation, spread over approximately 9 days, and a fairly high average humidity of 76%. Stay prepared for diverse weather conditions!

May Temperature in Greybull

In May in Greybull, the average temperature is 13°C (56°F), with maximums reaching 31°C (89°F) and minimums dropping as low as -1°C (30°F). This range makes Greybull an ideal destination, offering a mix of warm days and cool evenings for travelers.

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

The chart illustrates May temperature patterns in Greybull, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Greybull, May typically has an average temperature of 13°C (56°F), with highs reaching up to 31°C (89°F) and lows dropping to around -1°C (30°F).

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

May Precipitation in Greybull

In Greybull in May, the precipitation amount is 37 mm (1.5 in) over a span of 9 days.

May Precipitation Trends in Greybull

The chart displays monthly precipitation patterns in Greybull, 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 Greybull, May typically receives around 37 mm (1.5 inches) of precipitation spread over approximately 9 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 Greybull

In Greybull in May humidity is 76%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket enveloping you, making travel a bit uncomfortable as you navigate through the heavy, moisture-laden air.

May Average Humidity in Greybull

This chart illustrates the average monthly humidity levels in Greybull, 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 Greybull is approximately 76%, 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 Greybull

In Greybull 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 Greybull.

Maximum UV Index Levels in Greybull for May

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

Data source: Greybull 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 Greybull Compares to Other Months

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

This table compares monthly weather conditions in Greybull, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	10 mm (0.4 inches)	85%	moderate
February Weather	-5°C (24°F)	21 mm (0.8 inches)	85%	moderate
March Weather	5°C (40°F)	14 mm (0.5 inches)	79%	high
April Weather	8°C (46°F)	30 mm (1.2 inches)	74%	very high
May Weather	13°C (56°F)	37 mm (1.5 inches)	76%	very high
June Weather	20°C (69°F)	14 mm (0.5 inches)	79%	extreme
July Weather	25°C (77°F)	7 mm (0.3 inches)	81%	extreme
August Weather	23°C (73°F)	11 mm (0.4 inches)	80%	very high
September Weather	17°C (63°F)	30 mm (1.2 inches)	76%	very high
October Weather	7°C (45°F)	29 mm (1.1 inches)	74%	high
November Weather	2°C (37°F)	12 mm (0.5 inches)	81%	moderate
December Weather	-2°C (29°F)	14 mm (0.5 inches)	87%	low