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August Weather in Belleville, United States

Last updated: June 24, 2025

In August, the average temperature in Belleville, United States reaches a comfortable 25°C (77°F). Expect a minimum of 13°C (55°F) and a maximum soaring to 36°C (97°F). With 129 mm (5.1 in) of precipitation spread across 11 days, you might want to pack an umbrella. The air is humid too, with an average humidity level of 80%, making it an essential part of the local climate experience!

August Temperature in Belleville

In August in Belleville, the average temperature is 25°C (77°F). Maximum can reach 36°C (97°F) and minimum can be as low as 13°C (55°F). Overall, it's a pleasant time to visit Belleville, perfect for enjoying outdoor activities while being prepared for varying temperatures.

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

The chart illustrates August temperature patterns in Belleville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Belleville, August typically has an average temperature of 25°C (77°F), with highs reaching up to 36°C (97°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec333647566877807773604539
Data source: Temperature data for Belleville 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 Belleville

In Belleville in August, the precipitation amount is 129 mm (5.1 in) spread over 11 days, indicating a wet period for the area.

August Precipitation Trends in Belleville

The chart displays monthly precipitation patterns in Belleville, 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 Belleville, August typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec808313914815810091129591077767
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Belleville

In Belleville in August humidity is 80%. With an average temperature of 25°C (77°F), this humidity feels like traveling through a warm, tropical rainforest where the air is thick and steamy, making even the simplest stroll feel like a workout.

August Average Humidity in Belleville

This chart illustrates the average monthly humidity levels in Belleville, 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 Belleville 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 August generated using information from the Copernicus Climate Change Service.

August UV Index in Belleville

In Belleville in August, 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 Belleville.

Maximum UV Index Levels in Belleville for August

The chart shows the monthly maximum UV Index (UVI) for Belleville 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 Belleville typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110109753
Data source: Belleville 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 Belleville Compares to Other Months

Weather in Belleville varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Belleville, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Belleville, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (33°F)80 mm (3.2 inches)82%moderate
February Weather2°C (36°F)83 mm (3.3 inches)80%moderate
March Weather9°C (48°F)139 mm (5.5 inches)80%high
April Weather13°C (56°F)148 mm (5.8 inches)80%very high
May Weather20°C (68°F)158 mm (6.2 inches)82%very high
June Weather25°C (77°F)100 mm (4.0 inches)83%extreme
July Weather27°C (80°F)91 mm (3.6 inches)81%very high
August Weather25°C (77°F)129 mm (5.1 inches)80%very high
September Weather23°C (73°F)59 mm (2.3 inches)76%very high
October Weather15°C (60°F)107 mm (4.2 inches)76%high
November Weather7°C (45°F)77 mm (3.0 inches)85%moderate
December Weather4°C (40°F)67 mm (2.7 inches)86%moderate

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