August Weather in Rockford, United States

Last updated: June 24, 2025

In August, the average temperature in Rockford, United States reaches a warm 27°C (80°F), with daytime highs soaring up to a blistering 38°C (100°F) and nighttime lows dipping to a comfortable 18°C (64°F). Expect about 120 mm (4.7 in) of precipitation spread over 16 days, contributing to an average humidity of 72%. Prepare for a tropical ambiance perfect for adventure!

August Temperature in Rockford

In August, in Rockford, the average temperature is 27°C (80°F). Maximums can reach 38°C (100°F) and minimums can be as low as 18°C (64°F). It's a great time to visit for those who enjoy warm weather and outdoor activities.

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 27°C (80°F), with highs reaching up to 38°C (100°F) and lows dropping to around 18°C (64°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 120 mm (4.7 in) spread over 16 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 120 mm (4.7 inches) of precipitation spread over approximately 16 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 Rockford

In Rockford in August humidity is 72%. With an average temperature of 27°C (80°F), this humidity feels like a warm, sticky embrace that can make outdoor activities exhausting and often requires frequent breaks in the shade for travelers to stay comfortable.

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 72%, 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 reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, 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 11, which falls under the extreme 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	9°C (48°F)	113 mm (4.5 inches)	85%	moderate
February Weather	12°C (54°F)	156 mm (6.1 inches)	84%	high
March Weather	15°C (59°F)	129 mm (5.1 inches)	82%	very high
April Weather	18°C (64°F)	142 mm (5.6 inches)	82%	very high
May Weather	22°C (73°F)	126 mm (5.0 inches)	81%	extreme
June Weather	25°C (78°F)	150 mm (5.9 inches)	77%	extreme
July Weather	27°C (81°F)	110 mm (4.3 inches)	77%	extreme
August Weather	27°C (80°F)	120 mm (4.7 inches)	72%	extreme
September Weather	25°C (77°F)	88 mm (3.5 inches)	73%	very high
October Weather	20°C (69°F)	119 mm (4.7 inches)	73%	high
November Weather	12°C (55°F)	83 mm (3.3 inches)	85%	high
December Weather	10°C (51°F)	140 mm (5.5 inches)	88%	moderate