When to go · Waterloo, Iowa
Waterloo, Iowa in August
Great month. Inside Waterloo, Iowa's best window: May–Oct.
Key facts
- Verdict
- Great
- Temperature
- 85°C (185°F)185°F (85°C) / 65°C (149°F)149°F (65°C)
- average high / low
- Rain days
- 3
- Crowds
- High
- United States overall
- Prices
- High
- United States overall
Verdict
Inside Waterloo, Iowa's best window: May–Oct.
Is another month better than August?
No other month rates higher than August for Waterloo, Iowa in this guide.
Weather in August
- Waterloo, IowaHighs around 85 °C (185 °F), lows around 65 °C (149 °F), rain on about 3 daysHighs around 185 °F (85 °C), lows around 149 °F (65 °C), rain on about 3 days
Crowds and prices
- Crowds · United States overall
- High
- Prices · United States overall
- High
United States overall: Hot and busy; wildfire smoke in the West, hurricane peak begins in the Southeast.
High-price month: see what to book ahead.
Compare two months
Weather, crowds and prices for any two months in Waterloo, Iowa, side by side.
Verdict
Aug: Great
May: Great
Daytime high
Aug: 85 °C (185 °F)185 °F (85 °C)
May: 71 °C (160 °F)160 °F (71 °C)
Night low
Aug: 65 °C (149 °F)149 °F (65 °C)
May: 50 °C (122 °F)122 °F (50 °C)
Rain days
Aug: 3 (better)
May: 4
Crowds
Aug: High
May: Medium
Prices
Aug: High
May: Medium
Festivals listed
Aug: 0
May: 1
August: Inside Waterloo, Iowa's best window: May–Oct.
May: Inside Waterloo, Iowa's best window: May–Oct.
Waterloo, Iowa: figures are long-term averages from this guide, not a forecast.
What to pack
- Light, breathable clothes, a sun hat and sunscreen