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August Weather in Union, United States

Last updated: June 24, 2025

In August, the average temperature in Union, United States hovers around 23°C (74°F). Expect a range from a cool 11°C (53°F) to a warm 33°C (92°F). During this time, precipitation amounts to about 90 mm (3.5 in) spread over 11 days, while the average humidity sits at a comfortable 73%.

August Temperature in Union

In August in Union, the average temperature is 23°C (74°F), with maximums reaching 33°C (92°F) and minimums dropping as low as 11°C (53°F). This climate makes Union an ideal destination for travelers seeking pleasant weather and a variety of outdoor activities.

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 23°C (74°F), with highs reaching up to 33°C (92°F) and lows dropping to around 11°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec303442526472767469574236
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 total precipitation amounts to 90 mm (3.5 in) over the course of 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 90 mm (3.5 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec7297106981291201009086999487
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 73%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping blanket, making traveling a bit sweaty and heavy, but still pleasant if you stay hydrated and take breaks in the shade.

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 73%, 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 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.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098643
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-1°C (31°F)72 mm (2.8 inches)88%moderate
February Weather1°C (34°F)97 mm (3.8 inches)88%moderate
March Weather6°C (42°F)106 mm (4.2 inches)87%high
April Weather11°C (52°F)98 mm (3.9 inches)85%very high
May Weather18°C (64°F)129 mm (5.1 inches)81%very high
June Weather22°C (72°F)120 mm (4.7 inches)82%very high
July Weather24°C (76°F)100 mm (3.9 inches)81%very high
August Weather23°C (74°F)90 mm (3.5 inches)73%very high
September Weather21°C (69°F)86 mm (3.4 inches)73%very high
October Weather14°C (58°F)99 mm (3.9 inches)78%high
November Weather5°C (42°F)94 mm (3.7 inches)89%moderate
December Weather2°C (36°F)87 mm (3.4 inches)87%moderate

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