Dubuque weather in August 2025

Expect 81°F daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Dubuque in August. Check more long-term weather averages for Dubuque in August before you book your next holiday to Iowa in 2025/2026.

  • 81°F maximum daytime temperature in August in Dubuque81
    81°F max day temperature
  • 10 hours of sunshine per day
  • 9 days with some rainfall in August in Dubuque9
    9 days with some rainfall
  • 59°F minimum night-time temperature in August in Dubuque59
    59°F min night temperature
  • 14 hours of daylight per day in August in Dubuque14
    14 hours of daylight per day
  • Moderate heat & humidity in August in DubuqueM
    Moderate heat & humidity
  • 4.4 inches monthly rainfall in August in Dubuque4.4
    4.4 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Dubuque8
    8 (Very High) UV index

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The August weather guide for Iowa (Dubuque) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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How hot is it in Dubuque in August?

Daytime temperatures usually reach 81°F in Dubuque in August with moderate heat and humidity, falling to 59°F at night.

How sunny is it in Dubuque in August?

There are normally 10 hours of bright sunshine each day in Dubuque in August - that's 70% of daylight hours.

Does it rain in Dubuque in August?

There are usually 9 days with some rain in Dubuque in August and the average monthly rainfall is 4.4 inches.

Dubuque August sunrise & sunset times

Browse the sunrise and sunset times for Dubuque in August 2025. Select a month to view Dubuque sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:55 19:22
Saturday, 16th August 2025 05:11 19:02
Sunday, 31st August 2025 05:27 18:38

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