August Weather in Rockford, United States

Last updated: June 24, 2025

In August, the average temperature in Rockford, United States is a pleasant 22°C (71°F). Visitors can expect a range, with minimum temperatures dipping to 10°C (50°F) and peaking at 37°C (98°F). Throughout the month, precipitation totals about 115 mm (4.5 in) across 10 days, contributing to an average humidity of 77%. Perfect for those who enjoy a warm and humid atmosphere!

August Temperature in Rockford

In August in Rockford, the average temperature is 22°C (71°F), with maximums reaching 37°C (98°F) and minimums dropping as low as 10°C (50°F). This range makes it essential for travelers to pack both light clothing and warmer layers to enjoy their visit comfortably.

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

The chart illustrates August temperature patterns in Rockford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rockford, August typically has an average temperature of 22°C (71°F), with highs reaching up to 37°C (98°F) and lows dropping to around 10°C (50°F).

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

August Precipitation in Rockford

In Rockford in August, the precipitation amount is 115 mm (4.5 in) over a span of 10 days.

August Precipitation Trends in Rockford

The chart displays monthly precipitation patterns in Rockford, 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 Rockford, August typically receives around 115 mm (4.5 inches) of precipitation spread over approximately 10 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

August Humidity in Rockford

In Rockford in August, humidity is 77%. With an average temperature of 22°C (71°F), this humidity feels like a warm, enveloping blanket that can make walking around feel a bit stifling, requiring frequent breaks in shaded areas and plenty of hydration.

August Average Humidity in Rockford

This chart illustrates the average monthly humidity levels in Rockford, 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 Rockford is approximately 77%, 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 Rockford

In Rockford 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 Rockford.

Maximum UV Index Levels in Rockford for August

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

Data source: Rockford 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 Rockford Compares to Other Months

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

This table compares monthly weather conditions in Rockford, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	39 mm (1.5 inches)	82%	moderate
February Weather	-7°C (19°F)	48 mm (1.9 inches)	84%	moderate
March Weather	2°C (36°F)	74 mm (2.9 inches)	80%	moderate
April Weather	8°C (46°F)	77 mm (3.0 inches)	81%	very high
May Weather	16°C (61°F)	162 mm (6.4 inches)	74%	very high
June Weather	22°C (73°F)	128 mm (5.0 inches)	80%	extreme
July Weather	24°C (75°F)	97 mm (3.8 inches)	80%	very high
August Weather	22°C (71°F)	115 mm (4.5 inches)	77%	very high
September Weather	19°C (66°F)	101 mm (4.0 inches)	75%	very high
October Weather	10°C (50°F)	125 mm (4.9 inches)	80%	moderate
November Weather	2°C (36°F)	49 mm (1.9 inches)	87%	moderate
December Weather	-2°C (28°F)	36 mm (1.4 inches)	83%	moderate