May Weather in Plain, United States

Last updated: June 24, 2025

In May, the average temperature in Plain, United States is a comfortable 15°C (60°F). However, be prepared for a range, as it can dip to a chilly 0°C (32°F) or soar to a warm 35°C (95°F). Expect some rain, with an average precipitation of 130 mm (5.1 in) over approximately 14 days. With an average humidity of 75%, it’s a month that blends both warmth and moisture, perfect for those who enjoy a lush atmosphere.

May Temperature in Plain

In May in Plain, the average temperature is 15°C (60°F), with maximums reaching 35°C (95°F) and minimums dropping as low as 0°C (32°F). Be sure to pack layers to accommodate the wide temperature range and enjoy all that Plain has to offer!

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

The chart illustrates May temperature patterns in Plain, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Plain, May typically has an average temperature of 15°C (60°F), with highs reaching up to 35°C (95°F) and lows dropping to around 0°C (32°F).

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

May Precipitation in Plain

In Plain in May, the total precipitation amount is 130 mm (5.1 in) over the course of 14 days.

May Precipitation Trends in Plain

The chart displays monthly precipitation patterns in Plain, 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 Plain, May typically receives around 130 mm (5.1 inches) of precipitation spread over approximately 14 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Plain

In Plain in May, humidity is 75%. With an average temperature of 15°C (60°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities slightly uncomfortable and requiring extra hydration while exploring the sights.

May Average Humidity in Plain

This chart illustrates the average monthly humidity levels in Plain, 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 Plain is approximately 75%, 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 Plain

In Plain 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 Plain.

Maximum UV Index Levels in Plain for May

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

Data source: Plain 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 Plain Compares to Other Months

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

This table compares monthly weather conditions in Plain, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	45 mm (1.8 inches)	84%	low
February Weather	-6°C (22°F)	55 mm (2.2 inches)	85%	moderate
March Weather	2°C (36°F)	56 mm (2.2 inches)	84%	moderate
April Weather	8°C (46°F)	85 mm (3.4 inches)	83%	very high
May Weather	15°C (60°F)	130 mm (5.1 inches)	75%	very high
June Weather	21°C (71°F)	113 mm (4.4 inches)	79%	very high
July Weather	24°C (75°F)	95 mm (3.7 inches)	75%	very high
August Weather	22°C (71°F)	106 mm (4.2 inches)	69%	very high
September Weather	18°C (65°F)	117 mm (4.6 inches)	74%	very high
October Weather	10°C (51°F)	114 mm (4.5 inches)	79%	moderate
November Weather	2°C (36°F)	45 mm (1.8 inches)	88%	moderate
December Weather	-2°C (29°F)	43 mm (1.7 inches)	82%	low