When to go · Decatur, Illinois
Decatur, Illinois in June
Great month. Inside Decatur, Illinois's best window: May–Oct.
Key facts
- Verdict
- Great
- Temperature
- 29°C (84°F)84°F (29°C) / 18°C (64°F)64°F (18°C)
- average high / low
- Rain days
- 8
- Crowds
- High
- United States overall
- Prices
- High
- United States overall
Verdict
Inside Decatur, Illinois's best window: May–Oct.
Is another month better than June?
No other month rates higher than June for Decatur, Illinois in this guide.
Weather in June
- Decatur, IllinoisHighs around 29 °C (84 °F), lows around 18 °C (64 °F), rain on about 8 daysHighs around 84 °F (29 °C), lows around 64 °F (18 °C), rain on about 8 days
Crowds and prices
- Crowds · United States overall
- High
- Prices · United States overall
- High
United States overall: Rockies and northern parks open; desert heat builds; hurricane season starts. Book parks months ahead.
High-price month: see what to book ahead.
Compare two months
Weather, crowds and prices for any two months in Decatur, Illinois, side by side.
Verdict
Jun: Great
May: Great
Daytime high
Jun: 29 °C (84 °F)84 °F (29 °C)
May: 24 °C (75 °F)75 °F (24 °C)
Night low
Jun: 18 °C (64 °F)64 °F (18 °C)
May: 12 °C (54 °F)54 °F (12 °C)
Rain days
Jun: 8
May: 7 (better)
Crowds
Jun: High
May: Medium
Prices
Jun: High
May: Medium
Festivals listed
Jun: 0
May: 1
June: Inside Decatur, Illinois's best window: May–Oct.
May: Inside Decatur, Illinois's best window: May–Oct.
Decatur, Illinois: figures are long-term averages from this guide, not a forecast.
What to pack
Nothing unusual for the weather this month.