April Weather in Union, United States

Last updated: June 24, 2025

In April, the average temperature in Union, United States hovers around 5°C (42°F). Expect a chilly minimum of -12°C (10°F), while the mercury can rise to a pleasant 24°C (75°F) on warmer days. This month sees 83 mm (3.3 in) of precipitation spread over 14 days, leading to an average humidity level of 83%. Stay prepared for a mix of cool temperatures and moisture!

April Temperature in Union

In April in Union, the average temperature is 5°C (42°F). Maximums can reach 24°C (75°F), while minimums can drop as low as -12°C (10°F). Be sure to pack layers to accommodate the wide range of temperatures while exploring Union.

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 5°C (42°F), with highs reaching up to 24°C (75°F) and lows dropping to around -12°C (10°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 83 mm (3.3 in) spread over a period of 14 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 83 mm (3.3 inches) of precipitation spread over approximately 14 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

April Humidity in Union

In Union in April, humidity is 83%. With an average temperature of 5°C (42°F), this humidity feels like a heavy blanket wrapping around you, making even the simplest outdoor activities feel exhausting and uncomfortable for traveling.

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 83%, 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 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 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 8, 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	-3°C (27°F)	86 mm (3.4 inches)	86%	moderate
February Weather	-3°C (27°F)	132 mm (5.2 inches)	86%	moderate
March Weather	2°C (36°F)	89 mm (3.5 inches)	85%	high
April Weather	5°C (42°F)	83 mm (3.3 inches)	83%	very high
May Weather	10°C (49°F)	75 mm (2.9 inches)	77%	very high
June Weather	14°C (58°F)	41 mm (1.6 inches)	81%	very high
July Weather	20°C (68°F)	2 mm (0.1 inches)	76%	extreme
August Weather	19°C (67°F)	16 mm (0.6 inches)	60%	very high
September Weather	14°C (57°F)	33 mm (1.3 inches)	58%	very high
October Weather	6°C (44°F)	67 mm (2.6 inches)	75%	moderate
November Weather	2°C (35°F)	76 mm (3.0 inches)	85%	moderate
December Weather	-2°C (28°F)	94 mm (3.7 inches)	87%	low