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August Weather in De Kalb, United States

Last updated: June 24, 2025

In August, the average temperature in De Kalb, United States is a warm 27°C (81°F). Visitors can expect a temperature range that dips to a cozy 17°C (62°F), while occasionally soaring to a sizzling 37°C (99°F). With an average precipitation of 129 mm (5.1 in) over 14 days, and humidity levels around 77%, be prepared for a mix of warmth and occasional showers during your stay!

August Temperature in De Kalb

In August in De Kalb, the average temperature is 27°C (81°F), with a maximum that can reach 37°C (99°F) and a minimum that can drop to 17°C (62°F). This makes it an ideal time for travelers looking to enjoy warm weather while still having the option for cooler evenings.

August Weather in De Kalb: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in De Kalb, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In De Kalb, August typically has an average temperature of 27°C (81°F), with highs reaching up to 37°C (99°F) and lows dropping to around 17°C (62°F).
JanFebMarAprMayJunJulAugSepOctNovDec485360647379818177685451
Data source: Temperature data for De Kalb 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 De Kalb

In De Kalb in August, the precipitation amount is 129 mm (5.1 in) over the course of 14 days.

August Precipitation Trends in De Kalb

The chart displays monthly precipitation patterns in De Kalb, 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 De Kalb, August typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec1051601201481201671091299710966120
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in De Kalb

In De Kalb in August, humidity is 77%. With an average temperature of 27°C (81°F), this humidity feels like a warm blanket, making travel feel sticky and heavy, as sweat clings to the skin and the air becomes thick, causing you to long for refreshing breezes and cool shade.

August Average Humidity in De Kalb

This chart illustrates the average monthly humidity levels in De Kalb, 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 De Kalb is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%82%79%82%77%74%73%85%88%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in De Kalb

In De Kalb 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 De Kalb.

Maximum UV Index Levels in De Kalb for August

The chart shows the monthly maximum UV Index (UVI) for De Kalb 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 De Kalb typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111119864
Data source: De Kalb 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 De Kalb Compares to Other Months

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

This table compares monthly weather conditions in De Kalb, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (48°F)105 mm (4.1 inches)85%moderate
February Weather12°C (53°F)160 mm (6.3 inches)84%high
March Weather15°C (60°F)120 mm (4.7 inches)82%very high
April Weather18°C (65°F)148 mm (5.8 inches)82%very high
May Weather23°C (74°F)120 mm (4.7 inches)82%extreme
June Weather26°C (79°F)167 mm (6.6 inches)79%extreme
July Weather27°C (81°F)109 mm (4.3 inches)82%extreme
August Weather27°C (81°F)129 mm (5.1 inches)77%extreme
September Weather25°C (78°F)97 mm (3.8 inches)74%very high
October Weather20°C (69°F)109 mm (4.3 inches)73%very high
November Weather12°C (55°F)66 mm (2.6 inches)85%high
December Weather11°C (51°F)120 mm (4.7 inches)88%moderate

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