May Weather in Union City, United States

Last updated: June 24, 2025

In Union City, United States, the average temperature in May hovers around 22°C (71°F), with a minimum dip to 5°C (41°F) and a peak of 34°C (94°F). Expect 90 mm (3.6 in) of precipitation spread over 10 days, contributing to an average humidity level of 81%.

May Temperature in Union City

In May in Union City, the average temperature is 22°C (71°F). The maximum can reach 34°C (94°F) and the minimum can be as low as 5°C (41°F). It's a great time to visit Union City for travelers looking for mild weather with a mix of warm and cooler days.

May Weather in Union City: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Union City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Union City, May typically has an average temperature of 22°C (71°F), with highs reaching up to 34°C (94°F) and lows dropping to around 5°C (41°F).

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

May Precipitation in Union City

In Union City in May, the precipitation amount is 90 mm (3.6 in) spread over the course of 10 days.

May Precipitation Trends in Union City

The chart displays monthly precipitation patterns in Union City, 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 Union City, May typically receives around 90 mm (3.6 inches) of precipitation spread over approximately 10 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 Union City

In Union City in May humidity is 81%. With an average temperature of 22°C (71°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities somewhat challenging but offering a tropical ambiance perfect for exploring shaded areas and enjoying refreshing drinks.

May Average Humidity in Union City

This chart illustrates the average monthly humidity levels in Union City, 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 Union City 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 Union City

In Union City 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 Union City.

Maximum UV Index Levels in Union City for May

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

Data source: Union City 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 Union City Compares to Other Months

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

This table compares monthly weather conditions in Union City, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	101 mm (4.0 inches)	86%	moderate
February Weather	11°C (52°F)	134 mm (5.3 inches)	84%	high
March Weather	14°C (57°F)	117 mm (4.6 inches)	83%	very high
April Weather	17°C (63°F)	116 mm (4.6 inches)	81%	extreme
May Weather	22°C (71°F)	90 mm (3.6 inches)	81%	extreme
June Weather	25°C (77°F)	115 mm (4.5 inches)	81%	extreme
July Weather	26°C (80°F)	111 mm (4.4 inches)	83%	extreme
August Weather	26°C (79°F)	137 mm (5.4 inches)	81%	very high
September Weather	24°C (75°F)	111 mm (4.4 inches)	82%	very high
October Weather	19°C (67°F)	113 mm (4.4 inches)	78%	very high
November Weather	11°C (53°F)	79 mm (3.1 inches)	86%	high
December Weather	9°C (49°F)	136 mm (5.3 inches)	89%	moderate