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April Weather in Union, United States

Last updated: June 24, 2025

In April, the average temperature in Union, United States is a mild 12°C (53°F). Expect a range of temperatures, with a minimum of -5°C (23°F) and a maximum peaking at 29°C (85°F). This month brings about 113 mm (4.5 in) of precipitation over approximately 12 days, contributing to an average humidity level of 84%, making it a notably damp period.

April Temperature in Union

In April, in Union, the average temperature is 12°C (53°F). The maximum can reach 29°C (85°F) and the minimum can be as low as -5°C (23°F). Be prepared for a range of temperatures if you're planning to travel during this month.

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 12°C (53°F), with highs reaching up to 29°C (85°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec343944536268737167574338
Data source: Temperature data for Union generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Union

In Union in April, the precipitation amount is 113 mm (4.5 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 113 mm (4.5 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec74124921131319369881021087095
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Union

In Union in April, humidity is 84%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill that clings to your skin, making travel a bit uncomfortable as you navigate through the heavy, moist air.

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 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%84%83%83%79%66%68%78%89%86%
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 reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36810111111109753
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.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)74 mm (2.9 inches)87%moderate
February Weather4°C (40°F)124 mm (4.9 inches)87%high
March Weather7°C (44°F)92 mm (3.6 inches)86%very high
April Weather12°C (53°F)113 mm (4.5 inches)84%very high
May Weather17°C (62°F)131 mm (5.2 inches)83%extreme
June Weather20°C (69°F)93 mm (3.7 inches)83%extreme
July Weather23°C (73°F)69 mm (2.7 inches)79%extreme
August Weather22°C (72°F)88 mm (3.5 inches)66%very high
September Weather19°C (67°F)101 mm (4.0 inches)68%very high
October Weather14°C (57°F)108 mm (4.2 inches)78%high
November Weather6°C (43°F)70 mm (2.7 inches)89%moderate
December Weather3°C (39°F)95 mm (3.7 inches)86%moderate

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