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August Weather in Belleville, United States

Last updated: June 24, 2025

In August, the average temperature in Belleville, United States is a pleasant 23°C (74°F). Temperatures can vary significantly, with minimums dipping to 12°C (54°F) and maximums soaring up to 35°C (95°F). Expect some rain, as precipitation averages 86 mm (3.4 in) over approximately 12 days. Additionally, the average humidity level is around 64%, adding a touch of warmth to those sunny days.

August Temperature in Belleville

In August in Belleville, the average temperature is 23°C (74°F). The maximum can reach 35°C (95°F), and the minimum can be as low as 12°C (54°F). This makes Belleville an ideal destination for travelers looking for warm weather with a comfortable range of 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 23°C (74°F), with highs reaching up to 35°C (95°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec313440516170767467574135
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 86 mm (3.4 in) over a span of 12 days.

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 86 mm (3.4 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec621029010111292109861221068089
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 64%. With an average temperature of 23°C (74°F), this humidity feels like a warm blanket wrapping around you, making outdoor exploration enjoyable yet slightly sticky, so it's best to stay hydrated and take breaks in the shade while traveling.

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 64%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%89%88%80%79%74%64%67%81%89%88%
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 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 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
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 Weather-1°C (31°F)62 mm (2.4 inches)89%moderate
February Weather1°C (34°F)102 mm (4.0 inches)90%moderate
March Weather5°C (41°F)90 mm (3.5 inches)89%high
April Weather10°C (51°F)101 mm (4.0 inches)88%very high
May Weather16°C (62°F)112 mm (4.4 inches)80%very high
June Weather21°C (70°F)92 mm (3.6 inches)79%very high
July Weather24°C (76°F)109 mm (4.3 inches)74%very high
August Weather23°C (74°F)86 mm (3.4 inches)64%very high
September Weather19°C (67°F)122 mm (4.8 inches)67%very high
October Weather14°C (57°F)106 mm (4.2 inches)81%high
November Weather5°C (42°F)80 mm (3.2 inches)89%moderate
December Weather2°C (36°F)89 mm (3.5 inches)88%low

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