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August Weather in Dubuque, United States

Last updated: June 24, 2025

In August, the average temperature in Dubuque, United States hovers around 22°C (72°F). Expect a cozy minimum of 12°C (54°F) and a warm maximum reaching 33°C (92°F). With an average humidity of 69%, you might feel the moisture in the air, particularly with 89 mm (3.5 in) of precipitation spread over 10 days. Prepare for a delightful mix of warmth and occasional refreshment!

August Temperature in Dubuque

In August in Dubuque, the average temperature is 22°C (72°F). The maximum can reach 33°C (92°F) and the minimum can be as low as 12°C (54°F). This pleasant climate makes Dubuque an ideal destination for travelers seeking a comfortable outdoor experience.

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

The chart illustrates August temperature patterns in Dubuque, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dubuque, August typically has an average temperature of 22°C (72°F), with highs reaching up to 33°C (92°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec212337476172757266523730
Data source: Temperature data for Dubuque 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 Dubuque

In Dubuque in August, the precipitation amount is 89 mm (3.5 in) over a period of 10 days.

August Precipitation Trends in Dubuque

The chart displays monthly precipitation patterns in Dubuque, 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 Dubuque, August typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec4861648615013692891181194643
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Dubuque

In Dubuque in August, humidity is 69%. With an average temperature of 22°C (72°F), this humidity feels like a warm, enveloping blanket, making travel feel sticky and slightly oppressive, yet also invigorating as the air is thick with the scent of blooming flora and vibrant surroundings.

August Average Humidity in Dubuque

This chart illustrates the average monthly humidity levels in Dubuque, 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 Dubuque is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%85%84%83%75%79%75%69%74%79%88%82%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Dubuque

In Dubuque 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 Dubuque.

Maximum UV Index Levels in Dubuque for August

The chart shows the monthly maximum UV Index (UVI) for Dubuque 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 Dubuque typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098532
Data source: Dubuque 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 Dubuque Compares to Other Months

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

This table compares monthly weather conditions in Dubuque, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)48 mm (1.9 inches)84%moderate
February Weather-5°C (23°F)61 mm (2.4 inches)85%moderate
March Weather3°C (37°F)64 mm (2.5 inches)84%high
April Weather8°C (47°F)86 mm (3.4 inches)83%very high
May Weather16°C (61°F)150 mm (5.9 inches)75%very high
June Weather22°C (72°F)136 mm (5.4 inches)79%very high
July Weather24°C (76°F)92 mm (3.6 inches)75%very high
August Weather22°C (72°F)89 mm (3.5 inches)69%very high
September Weather19°C (66°F)118 mm (4.7 inches)74%very high
October Weather11°C (52°F)119 mm (4.7 inches)79%moderate
November Weather3°C (37°F)46 mm (1.8 inches)88%moderate
December Weather-1°C (30°F)43 mm (1.7 inches)82%low

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