August Weather in Peoria, United States

Last updated: June 24, 2025

In August, the average temperature in Peoria, United States hovers around 23°C (74°F), offering a pleasant climate. Daytime highs can soar to a maximum of 36°C (96°F), while nighttime dips can bring temperatures down to a cool 12°C (55°F). However, be prepared for some rain, as 74 mm (2.9 in) may fall over 9 days. With an average humidity of 81%, it's the perfect time to embrace the warmth and enjoy the vibrant atmosphere!

August Temperature in Peoria

In August in Peoria, the average temperature is 23°C (74°F). Maximums can reach 36°C (96°F) while minimums can dip as low as 12°C (55°F). It's a great time for travelers to enjoy a mix of warm days and cooler evenings, making it ideal for both outdoor activities and comfortable dining experiences.

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

The chart illustrates August temperature patterns in Peoria, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Peoria, August typically has an average temperature of 23°C (74°F), with highs reaching up to 36°C (96°F) and lows dropping to around 12°C (55°F).

Data source: Temperature data for Peoria generated using information from the Copernicus Climate Change Service.

August Precipitation in Peoria

In Peoria in August, the precipitation amount is 74 mm (2.9 in), which occurs over a span of 9 days.

August Precipitation Trends in Peoria

The chart displays monthly precipitation patterns in Peoria, 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 Peoria, August typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

August Humidity in Peoria

In Peoria in August, humidity is 81%. With an average temperature of 23°C (74°F), this humidity feels like a warm, heavy blanket draped over your skin, making travel feel a bit more sluggish and requiring plenty of water breaks to stay comfortable.

August Average Humidity in Peoria

This chart illustrates the average monthly humidity levels in Peoria, 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 Peoria is approximately 81%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Peoria

In Peoria 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 Peoria.

Maximum UV Index Levels in Peoria for August

The chart shows the monthly maximum UV Index (UVI) for Peoria 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 Peoria typically reaches 9, which falls under the very high exposure category.

Data source: Peoria 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 Peoria Compares to Other Months

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

This table compares monthly weather conditions in Peoria, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	61 mm (2.4 inches)	82%	moderate
February Weather	-2°C (29°F)	67 mm (2.7 inches)	83%	moderate
March Weather	5°C (42°F)	108 mm (4.3 inches)	84%	high
April Weather	10°C (51°F)	116 mm (4.6 inches)	85%	very high
May Weather	18°C (64°F)	167 mm (6.6 inches)	79%	very high
June Weather	23°C (74°F)	148 mm (5.8 inches)	82%	extreme
July Weather	25°C (77°F)	107 mm (4.2 inches)	80%	very high
August Weather	23°C (74°F)	74 mm (2.9 inches)	81%	very high
September Weather	21°C (70°F)	71 mm (2.8 inches)	80%	very high
October Weather	13°C (56°F)	131 mm (5.2 inches)	82%	high
November Weather	4°C (40°F)	57 mm (2.3 inches)	88%	moderate
December Weather	1°C (34°F)	55 mm (2.2 inches)	84%	low