When to go · Belleville, Illinois
Belleville, Illinois in August
Great month. Inside Belleville, Illinois's best window: Apr–Oct.
Key facts
- Verdict
- Great
- Temperature
- 30°C (86°F)86°F (30°C) / 20°C (68°F)68°F (20°C)
- average high / low
- Rain days
- 8
- Crowds
- High
- United States overall
- Prices
- High
- United States overall
Verdict
Inside Belleville, Illinois's best window: Apr–Oct.
Is another month better than August?
No other month rates higher than August for Belleville, Illinois in this guide.
Weather in August
- Belleville, IllinoisHighs around 30 °C (86 °F), lows around 20 °C (68 °F), rain on about 8 daysHighs around 86 °F (30 °C), lows around 68 °F (20 °C), rain on about 8 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 Belleville, Illinois, side by side.
Verdict
Aug: Great
Apr: Great
Daytime high
Aug: 30 °C (86 °F)86 °F (30 °C)
Apr: 19 °C (66 °F)66 °F (19 °C)
Night low
Aug: 20 °C (68 °F)68 °F (20 °C)
Apr: 7 °C (45 °F)45 °F (7 °C)
Rain days
Aug: 8 (better)
Apr: 9
Crowds
Aug: High
Apr: Medium
Prices
Aug: High
Apr: Medium
Festivals listed
Aug: 0
Apr: 1
August: Inside Belleville, Illinois's best window: Apr–Oct.
April: Inside Belleville, Illinois's best window: Apr–Oct.
Belleville, Illinois: figures are long-term averages from this guide, not a forecast.
What to pack
- Light, breathable clothes, a sun hat and sunscreen