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August Weather in Union, United States

Last updated: June 24, 2025

In August, the average temperature in Union, United States is a pleasant 22°C (72°F). However, temperatures can range from a cool minimum of 8°C (47°F) to a warm maximum of 34°C (93°F). Be prepared for some wet weather, as 92 mm (3.6 in) of precipitation is expected over 11 days. With an average humidity of 76%, it’s a great time to embrace the vibrant atmosphere of the season!

August Temperature in Union

In August in Union, the average temperature is 22°C (72°F), with maximums reaching 34°C (93°F) and minimums dropping as low as 8°C (47°F). This varied climate makes it an ideal destination for travelers seeking both warm and cooler weather experiences.

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

The chart illustrates August 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, August typically has an average temperature of 22°C (72°F), with highs reaching up to 34°C (93°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec232538476071757266533731
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.

August Precipitation in Union

In Union in August, the precipitation amount is 92 mm (3.6 in) spread over 11 days.

August Precipitation Trends in Union

The chart displays monthly precipitation patterns in Union, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Union, August typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec6159721121621199292991215153
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Union

In Union in August humidity is 76%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making travel slightly uncomfortable as you navigate through the thick, saturated air.

August Average Humidity in Union

This chart illustrates the average monthly humidity levels in Union, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Union is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Union

In Union in August, 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 August

The chart shows the monthly maximum UV Index (UVI) for Union in August, 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 August, the maximum UV index in Union typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098532
Data source: Union August 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 August 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 August’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 August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)61 mm (2.4 inches)85%moderate
February Weather-4°C (26°F)59 mm (2.3 inches)85%moderate
March Weather3°C (38°F)72 mm (2.8 inches)85%high
April Weather8°C (47°F)112 mm (4.4 inches)85%very high
May Weather15°C (60°F)162 mm (6.4 inches)78%very high
June Weather21°C (71°F)119 mm (4.7 inches)80%very high
July Weather24°C (75°F)92 mm (3.6 inches)78%very high
August Weather22°C (72°F)92 mm (3.6 inches)76%very high
September Weather19°C (67°F)99 mm (3.9 inches)79%very high
October Weather11°C (53°F)121 mm (4.8 inches)83%moderate
November Weather3°C (38°F)51 mm (2.0 inches)88%moderate
December Weather0°C (32°F)53 mm (2.1 inches)81%low

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