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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 (55°F), with lows dipping to a chilly -3°C (27°F) and highs peaking at a warm 29°C (85°F). Humidity levels hover around a notable 85%, contributing to the overall climate. Expect about 125 mm (4.9 in) of precipitation over 12 days, so be prepared for some wet weather during your stay!

April Temperature in Union

In April in Union, the average temperature is 12°C (55°F). Maximum temperatures can reach as high as 29°C (85°F), while the minimum can drop to a chilly -3°C (27°F). Travelers should be prepared for a wide range of temperatures 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 12°C (55°F), with highs reaching up to 29°C (85°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec333745546673777570594439
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 total precipitation amount is 125 mm (4.9 in) spread over 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 125 mm (4.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec8011013512512614611395879893109
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 85%. With an average temperature of 12°C (55°F), this humidity feels like a thick, damp blanket wrapping around you, making every step feel heavier and less invigorating 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 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%85%81%82%81%73%73%78%89%87%
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.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098643
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)80 mm (3.1 inches)88%moderate
February Weather3°C (38°F)110 mm (4.3 inches)88%moderate
March Weather7°C (46°F)135 mm (5.3 inches)87%high
April Weather12°C (55°F)125 mm (4.9 inches)85%very high
May Weather19°C (66°F)126 mm (4.9 inches)81%very high
June Weather23°C (74°F)146 mm (5.7 inches)82%very high
July Weather25°C (78°F)113 mm (4.5 inches)81%very high
August Weather24°C (75°F)95 mm (3.7 inches)73%very high
September Weather21°C (71°F)87 mm (3.4 inches)73%very high
October Weather15°C (59°F)98 mm (3.9 inches)78%high
November Weather7°C (44°F)93 mm (3.7 inches)89%moderate
December Weather4°C (39°F)109 mm (4.3 inches)87%moderate

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