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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 13°C (55°F). Be prepared for a range of weather, as temperatures can dip as low as -4°C (24°F) and soar up to 31°C (88°F). Expect about 126 mm (5.0 in) of precipitation over 13 days, contributing to an average humidity of 80%.

April Temperature in Union

In April in Union, the average temperature is 13°C (55°F). The maximum can reach 31°C (88°F), while the minimum can drop as low as -4°C (24°F). Prepare for a diverse range of weather conditions when traveling 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 13°C (55°F), with highs reaching up to 31°C (88°F) and lows dropping to around -4°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec333647556676797672594539
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 126 mm (5.0 in) over the course of 13 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 126 mm (5.0 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec758012612615289100145551086955
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 80%. With an average temperature of 13°C (55°F), this humidity feels like a damp blanket wrapping around you, making any outdoor activity feel stifling and heavy, which can lead to fatigue for travelers unaccustomed to such moist conditions.

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 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%80%82%83%81%80%76%76%85%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 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.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109753
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 Weather0°C (33°F)75 mm (2.9 inches)82%moderate
February Weather2°C (36°F)80 mm (3.1 inches)80%moderate
March Weather8°C (47°F)126 mm (5.0 inches)80%high
April Weather13°C (55°F)126 mm (5.0 inches)80%very high
May Weather19°C (66°F)152 mm (6.0 inches)82%very high
June Weather24°C (76°F)89 mm (3.5 inches)83%extreme
July Weather26°C (79°F)100 mm (3.9 inches)81%extreme
August Weather24°C (76°F)145 mm (5.7 inches)80%very high
September Weather22°C (72°F)55 mm (2.2 inches)76%very high
October Weather15°C (59°F)108 mm (4.2 inches)76%high
November Weather7°C (45°F)69 mm (2.7 inches)85%moderate
December Weather4°C (39°F)54 mm (2.1 inches)86%moderate

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