March Weather in Union, United States

Last updated: June 24, 2025

In March, the average temperature in Union, United States hovers around 13°C (56°F), offering a mild climate for visitors. However, temperatures can swing widely, with a minimum of -4°C (24°F) and a maximum reaching 30°C (87°F). Expect some rain, as the region experiences 90 mm (3.6 in) of precipitation over approximately 10 days, accompanied by a high average humidity of 84%. Plan accordingly to enjoy the best of what this destination has to offer!

March Temperature in Union

In March in Union, the average temperature is 13°C (56°F), with maximums that can reach 30°C (87°F) and minimums that can drop as low as -4°C (24°F). This range makes it essential for travelers to pack layers to stay comfortable in varying conditions.

March Weather in Union: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Union, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Union, March typically has an average temperature of 13°C (56°F), with highs reaching up to 30°C (87°F) and lows dropping to around -4°C (24°F).

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

March Precipitation in Union

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

March Precipitation Trends in Union

The chart displays monthly precipitation patterns in Union, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Union, March typically receives around 90 mm (3.6 inches) of precipitation spread over approximately 10 days.

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

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Millimeters (mm) Inches (in)

March Humidity in Union

In Union in March, humidity is 84%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making it feel cooler and more uncomfortable for traveling, as the air clings to your skin and weighs you down with a sense of heaviness.

March Average Humidity in Union

This chart illustrates the average monthly humidity levels in Union, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Union is approximately 84%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Union

In Union in March, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Union.

Maximum UV Index Levels in Union for March

The chart shows the monthly maximum UV Index (UVI) for Union in March, 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 March, the maximum UV index in Union typically reaches 8, which falls under the very high exposure category.

Data source: Union March 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 March Weather in Union Compares to Other Months

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

This table compares monthly weather conditions in Union, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	95 mm (3.7 inches)	86%	moderate
February Weather	10°C (51°F)	123 mm (4.8 inches)	85%	high
March Weather	13°C (56°F)	90 mm (3.6 inches)	84%	very high
April Weather	17°C (63°F)	108 mm (4.2 inches)	82%	very high
May Weather	22°C (72°F)	115 mm (4.5 inches)	83%	extreme
June Weather	25°C (77°F)	90 mm (3.5 inches)	82%	extreme
July Weather	27°C (81°F)	113 mm (4.5 inches)	80%	extreme
August Weather	26°C (79°F)	127 mm (5.0 inches)	74%	very high
September Weather	24°C (76°F)	115 mm (4.5 inches)	75%	very high
October Weather	19°C (67°F)	97 mm (3.8 inches)	79%	very high
November Weather	11°C (53°F)	96 mm (3.8 inches)	87%	high
December Weather	9°C (49°F)	130 mm (5.1 inches)	87%	moderate