May Weather in O'Brien, United States

Last updated: June 24, 2025

In O'Brien, United States, the average temperature in May hovers around 12°C (54°F), making it a season of varying weather. Expect a chill at night with temperatures dipping as low as -3°C (27°F), while daytime can bring warmth with highs reaching 30°C (87°F). During this month, you'll experience about 75 mm (3.0 in) of precipitation over 6 days, contributing to an average humidity level of 81%. Prepare for a blend of cool and warm days, ensuring you’re ready for anything!

May Temperature in O'Brien

In May in O'Brien, the average temperature is 12°C (54°F), with maximums reaching 30°C (87°F) and minimums dropping as low as -3°C (27°F). This diverse temperature range means travelers should pack layers to stay comfortable during their visit.

May Weather in O'Brien: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in O'Brien, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In O'Brien, May typically has an average temperature of 12°C (54°F), with highs reaching up to 30°C (87°F) and lows dropping to around -3°C (27°F).

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

May Precipitation in O'Brien

In O'Brien in May, the precipitation amount is 75 mm (3.0 in) occurring over a span of 6 days.

May Precipitation Trends in O'Brien

The chart displays monthly precipitation patterns in O'Brien, 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 O'Brien, May typically receives around 75 mm (3.0 inches) of precipitation spread over approximately 6 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 O'Brien

In O'Brien in May humidity is 81%. With an average temperature of 12°C (54°F), this humidity feels like a damp blanket enveloping you, making travel sluggish and uncomfortable as you battle the stickiness while trying to enjoy your surroundings.

May Average Humidity in O'Brien

This chart illustrates the average monthly humidity levels in O'Brien, 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 O'Brien 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 O'Brien

In O'Brien in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in O'Brien.

Maximum UV Index Levels in O'Brien for May

The chart shows the monthly maximum UV Index (UVI) for O'Brien 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 O'Brien typically reaches 11, which falls under the extreme exposure category.

Data source: O'Brien 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 O'Brien Compares to Other Months

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

This table compares monthly weather conditions in O'Brien, 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 (39°F)	294 mm (11.6 inches)	86%	moderate
February Weather	4°C (39°F)	279 mm (11.0 inches)	85%	moderate
March Weather	5°C (42°F)	213 mm (8.4 inches)	85%	high
April Weather	8°C (48°F)	158 mm (6.2 inches)	82%	very high
May Weather	12°C (54°F)	75 mm (3.0 inches)	81%	extreme
June Weather	17°C (62°F)	37 mm (1.5 inches)	79%	extreme
July Weather	21°C (70°F)	3 mm (0.1 inches)	70%	very high
August Weather	21°C (70°F)	4 mm (0.2 inches)	60%	very high
September Weather	17°C (62°F)	64 mm (2.5 inches)	62%	very high
October Weather	11°C (53°F)	88 mm (3.5 inches)	72%	high
November Weather	7°C (45°F)	202 mm (8.0 inches)	87%	moderate
December Weather	3°C (38°F)	226 mm (8.9 inches)	86%	low