April Weather in Union, United States

Last updated: June 24, 2025

In April, the average temperature in Union, United States hovers around 11°C (52°F), making it a mild month. Expect to experience a range of temperatures, with a minimum of -6°C (22°F) and a maximum soaring to 29°C (84°F). With an average precipitation of 98 mm (3.9 in) over 12 days, and a high humidity level of 85%, it's advisable to prepare for both wet and variable weather conditions.

April Temperature in Union

In April in Union, the average temperature is 11°C (52°F), with a maximum reaching 29°C (84°F) and a minimum dropping as low as -6°C (22°F). Therefore, it's essential to pack for a range of weather conditions if you plan to travel during this time.

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

The chart illustrates April 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, April typically has an average temperature of 11°C (52°F), with highs reaching up to 29°C (84°F) and lows dropping to around -6°C (22°F).

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

April Precipitation in Union

In Union in April, the precipitation amount is 98 mm (3.9 in) over the course of 12 days.

April Precipitation Trends in Union

The chart displays monthly precipitation patterns in Union, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Union, April typically receives around 98 mm (3.9 inches) of precipitation spread over approximately 12 days.

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

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Millimeters (mm) Inches (in)

April Humidity in Union

In Union in April, humidity is 85%. With an average temperature of 11°C (52°F), this humidity feels like a damp blanket wrapping around you, making travel quite uncomfortable as the air feels heavy and can sap your energy.

April Average Humidity in Union

This chart illustrates the average monthly humidity levels in Union, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Union is approximately 85%, offering insight into how humid the weather typically is during this month.

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

April UV Index in Union

In Union in April, 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 Union.

Maximum UV Index Levels in Union for April

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

Data source: Union April 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 April 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 April’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 April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (31°F)	72 mm (2.8 inches)	88%	moderate
February Weather	1°C (34°F)	97 mm (3.8 inches)	88%	moderate
March Weather	6°C (42°F)	106 mm (4.2 inches)	87%	high
April Weather	11°C (52°F)	98 mm (3.9 inches)	85%	very high
May Weather	18°C (64°F)	129 mm (5.1 inches)	81%	very high
June Weather	22°C (72°F)	120 mm (4.7 inches)	82%	very high
July Weather	24°C (76°F)	100 mm (3.9 inches)	81%	very high
August Weather	23°C (74°F)	90 mm (3.5 inches)	73%	very high
September Weather	21°C (69°F)	86 mm (3.4 inches)	73%	very high
October Weather	14°C (58°F)	99 mm (3.9 inches)	78%	high
November Weather	5°C (42°F)	94 mm (3.7 inches)	89%	moderate
December Weather	2°C (36°F)	87 mm (3.4 inches)	87%	moderate