Des Moines in August
Great time to visit
August means Iowa State Fair, and that transforms Des Moines completely. If you're here for the fair, it's magical. If you're not, expect crowds and high prices with oppressive heat.
Weather
August continues the summer heat with temperatures similar to July but often feels more oppressive due to sustained humidity. Late-day thunderstorms become a daily possibility. Air conditioning becomes essential, not optional.
29°C high18°C low9 rain days
Crowds & Cost
peak crowds
~$155/day average
Events & Festivals
- •Iowa State Fair
- •Register's Annual Great Bicycle Ride Across Iowa (RAGBRAI) finale
August Tips
- •Book Iowa State Fair accommodations 6+ months ahead - it's the biggest event of the year
- •Expect crowds and premium pricing during State Fair week
- •Indoor attractions like the Science Center and museums are lifesavers during heat waves
All Months
Spring through fall gives you the best of Des Moines. April brings the tulips at Reiman Gardens, though you might catch a late snow. May and June are perfect – mild temperatures, everything's green, and outdoor festivals start ramping up.
Summer gets hot and humid, but that's when Des Moines really comes alive. The Iowa State Fair in August draws over a million people to nearby Altoona. July brings RAGBRAI cyclists rolling through town, and outdoor concerts fill Water Works Park.
Fall colors peak in early October, and the weather stays pleasant through Halloween. Winter? Look, it gets cold. Really cold. But hotel rates drop by half, and there's something cozy about ducking into a warm brewery when it's 10 degrees outside.
Des Moines Scores
Solo
6/10
Couples
5/10
Families
7/10
Adventure
3/10
Budget
9/10
Luxury
3/10
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