When to go · Monticello, Illinois
Monticello, Illinois in October
Great month. Inside Monticello, Illinois's best window: May–Oct (park and train season); late Sep–Oct for foliage.
Key facts
- Verdict
- Great
- Temperature
- 19°C (66°F)66°F (19°C) / 7°C (45°F)45°F (7°C)
- average high / low
- Rain days
- 8
- Crowds
- Medium
- United States overall
- Prices
- Medium
- United States overall
Verdict
Inside Monticello, Illinois's best window: May–Oct (park and train season); late Sep–Oct for foliage.
Is another month better than October?
No other month rates higher than October for Monticello, Illinois in this guide.
Weather in October
- Monticello, IllinoisHighs around 19 °C (66 °F), lows around 7 °C (45 °F), rain on about 8 daysHighs around 66 °F (19 °C), lows around 45 °F (7 °C), rain on about 8 days
Crowds and prices
- Crowds · United States overall
- Medium
- Prices · United States overall
- Medium
United States overall: Best all-round month: New England foliage, desert parks, cooler cities. High roads start closing late in the month.
Compare two months
Weather, crowds and prices for any two months in Monticello, Illinois, side by side.
Verdict
Oct: Great
May: Great
Daytime high
Oct: 19 °C (66 °F)66 °F (19 °C)
May: 24 °C (75 °F)75 °F (24 °C)
Night low
Oct: 7 °C (45 °F)45 °F (7 °C)
May: 12 °C (54 °F)54 °F (12 °C)
Rain days
Oct: 8 (better)
May: 11
Crowds
Oct: Medium
May: Medium
Prices
Oct: Medium
May: Medium
Festivals listed
Oct: 0
May: 1
October: Inside Monticello, Illinois's best window: May–Oct (park and train season); late Sep–Oct for foliage.
May: Inside Monticello, Illinois's best window: May–Oct (park and train season); late Sep–Oct for foliage.
Monticello, Illinois: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm layer for the evenings