August weather forecast
Iowa, USA

August in Iowa serves as a gentle reminder that summer's reign is nearing its end, though the heat persists. Daytime temperatures typically hover between 80°F (26.7°C) and 90°F (32.2°C). The nights, while warm, bring a subtle hint of the approaching autumn, with temperatures ranging from 60°F (15.6°C) to 70°F (21.1°C).

Rainfall in August, though less frequent than the earlier summer months, can still manifest in the form of sporadic thunderstorms. These storms, stemming from lingering heat and humidity, offer respite by tempering the warmth with their cooling showers. The rain, besides providing relief, also plays a crucial role in sustaining Iowa's vast agricultural landscapes during this warm period.

In comparison to July, August sees a gradual decrease in both temperature and humidity levels, especially as the month progresses. The sun, while still dominant, loses some of its intensity, casting a milder, golden hue over the state. This shift is indicative of the transition from the high-energy summer months to the mellower autumn season.

Areas close to significant water sources, like Burlington along the Mississippi River, may experience slightly more moderated temperatures, thanks to the water's tempering influence. Nonetheless throughout Iowa, August stands as a bridge between the full-blown summer and the impending fall. The month gracefully balances the residual warmth of July with subtle hints of the cooler days ahead, making it an exquisite time for outdoor activities and end-of-summer celebrations.

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• Des Moines - August »
  On the first day of August in Des Moines sunrise is at 6:09 am and sunset at 8:31 pm. On the last day of August, in Des Moines sunrise is at 6:40 am and sunset at 7:48 pm CDT.
• Cedar Rapids - August »
  In Cedar Rapids, in August, during 11.9 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. In Cedar Rapids, in August, it is raining for 11.9 days, with typically 1.22" (31mm) of accumulated precipitation.
• Davenport - August »
  In Davenport, Iowa, in August, during 13.3 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. In Davenport during August, the rain falls for 13.3 days and regularly aggregates up to 1.89" (48mm) of precipitation.
• Sioux City - August »
  On the first day of August in Sioux City sunrise is at 6:18 am and sunset at 8:45 pm. On the first day of August in Sioux City, sunrise is at 6:18 am and sunset at 8:45 pm.
• Iowa City - August »
  On the first day of August in Iowa City, sunrise is at 6:01 am and sunset at 8:23 pm. In August, in Iowa City, Iowa, the rain falls for 12.8 days.
• Waterloo - August »
  On the last day of August, in Waterloo, Iowa, sunrise is at 6:34 am and sunset at 7:44 pm CDT. In Waterloo in August, it is raining for 13.3 days, with typically 1.97" (50mm) of accumulated precipitation.
• Ames - August »
  In Ames, during August, the rain falls for 14.3 days and regularly aggregates up to 2.68" (68mm) of precipitation. As July turns into August in Ames, the average high-temperatures rest at a still warm 79.9°F (26.6°C), showing a minor variation from the prior month.
• West Des Moines - August »
  In West Des Moines, in August, during 12.3 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. In West Des Moines, in August, during 12.3 rainfall days, 2.36" (60mm) of precipitation is typically accumulated.
• Council Bluffs - August »
  In Council Bluffs during August, the rain falls for 13.5 days and regularly aggregates up to 2.64" (67mm) of precipitation. June through August, with an average maximum UV index of 6, are months with the highest UV index in Council Bluffs, Iowa.
• Dubuque - August »
  July and August, with an average of 9.7h of sunshine, are months with the most sunshine in Dubuque. August maintains the warm summer conditions in Dubuque, with temperatures slightly falling from the July highs to 78.6°F (25.9°C).
• Ankeny - August »
  August carries the summer charm forward even with a slight drop in temperatures compared to July in Ankeny, Iowa. On the first day of August in Ankeny, sunrise is at 6:09 am and sunset at 8:32 pm.
• Urbandale - August »
  In Urbandale, during August, the rain falls for 12.3 days and regularly aggregates up to 1.81" (46mm) of precipitation. Upon the beginning of August, Urbandale's high-temperatures register at a still warm 81.3°F (27.4°C), closely mirroring the preceding month.