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August Weather in Belleville, United States

Last updated: June 24, 2025

In Belleville, United States, the average temperature in August is a pleasant 25°C (77°F). However, be prepared for temperature fluctuations, as it can drop to a minimum of 12°C (53°F) and soar up to a maximum of 38°C (101°F). Expect some rain during your visit, with an average precipitation of 95 mm (3.7 in) spread over approximately 8 days. Don't forget to stay hydrated, as humidity levels can reach a comfortable 80%!

August Temperature in Belleville

In August in Belleville, the average temperature is 25°C (77°F). Maximums can reach 38°C (101°F), and minimums can be as low as 12°C (53°F). This makes it a great time to explore outdoor activities while being prepared for both warm days and cooler evenings.

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 38°C (101°F) and lows dropping to around 12°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec293044536477807772544335
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 total precipitation amount is 95 mm (3.7 in) spread over 8 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 95 mm (3.7 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec2523804917972799560892337
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.
JanFebMarAprMayJunJulAugSepOctNovDec75%78%67%70%82%81%80%80%74%71%79%83%
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.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109643
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-2°C (30°F)25 mm (1.0 inches)74%moderate
February Weather-1°C (30°F)23 mm (0.9 inches)78%moderate
March Weather7°C (44°F)80 mm (3.2 inches)67%high
April Weather11°C (53°F)49 mm (1.9 inches)70%very high
May Weather18°C (64°F)179 mm (7.0 inches)82%very high
June Weather25°C (78°F)72 mm (2.8 inches)81%extreme
July Weather27°C (81°F)79 mm (3.1 inches)80%extreme
August Weather25°C (77°F)95 mm (3.7 inches)80%very high
September Weather22°C (72°F)59 mm (2.3 inches)73%very high
October Weather12°C (55°F)88 mm (3.5 inches)71%high
November Weather6°C (43°F)23 mm (0.9 inches)79%moderate
December Weather1°C (35°F)37 mm (1.4 inches)83%moderate

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