May Weather in Plains, United States

Last updated: June 24, 2025

In May, the average temperature in Plains, United States hovers around 10°C (50°F), with a range that can see lows of -5°C (23°F) and highs reaching 29°C (84°F). Expect 82 mm (3.2 in) of precipitation spread over 15 days, contributing to an average humidity of 77%. Be prepared for a mix of weather as you explore!

May Temperature in Plains

In May in Plains, the average temperature is 10°C (50°F). Maximum temperatures can reach 29°C (84°F), while minimums can drop as low as -5°C (23°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates May temperature patterns in Plains, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Plains, May typically has an average temperature of 10°C (50°F), with highs reaching up to 29°C (84°F) and lows dropping to around -5°C (23°F).

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

May Precipitation in Plains

In Plains in May, the precipitation amount is 82 mm (3.2 in) over the course of 15 days.

May Precipitation Trends in Plains

The chart displays monthly precipitation patterns in Plains, 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 Plains, May typically receives around 82 mm (3.2 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 Plains

In Plains in May, humidity is 77%. With an average temperature of 10°C (50°F), this humidity feels like a thick, heavy blanket enveloping you, making travel uncomfortable and sticky, as it clings to your skin and clothes, turning each step into a challenge.

May Average Humidity in Plains

This chart illustrates the average monthly humidity levels in Plains, 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 Plains is approximately 77%, 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 Plains

In Plains 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 Plains.

Maximum UV Index Levels in Plains for May

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

Data source: Plains 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 Plains Compares to Other Months

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

This table compares monthly weather conditions in Plains, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	69 mm (2.7 inches)	89%	low
February Weather	-6°C (22°F)	111 mm (4.4 inches)	89%	moderate
March Weather	0°C (32°F)	72 mm (2.8 inches)	87%	high
April Weather	4°C (39°F)	85 mm (3.3 inches)	84%	high
May Weather	10°C (50°F)	82 mm (3.2 inches)	77%	very high
June Weather	15°C (58°F)	60 mm (2.4 inches)	78%	very high
July Weather	20°C (68°F)	21 mm (0.8 inches)	77%	very high
August Weather	19°C (66°F)	27 mm (1.1 inches)	64%	very high
September Weather	13°C (55°F)	39 mm (1.5 inches)	62%	high
October Weather	5°C (41°F)	83 mm (3.3 inches)	79%	moderate
November Weather	0°C (33°F)	91 mm (3.6 inches)	87%	moderate
December Weather	-3°C (27°F)	88 mm (3.5 inches)	90%	low