When to go · Monticello, Illinois

Monticello, Illinois in January

Avoid month. Listed as a month to avoid: Jan–Feb (cold, little open); mid-summer heat and humidity.

Key facts

Verdict: Avoid
Temperature: 1°C (34°F)34°F (1°C) / −8°C (18°F)18°F (−8°C); average high / low
Rain days: 8
Crowds: Low; United States overall
Prices: Low; United States overall

Plan around it

Verdict

AvoidBest and avoid months for Monticello, Illinois

Listed as a month to avoid: Jan–Feb (cold, little open); mid-summer heat and humidity.

January is rated avoid. These months rate higher:

Long-term averages

Monticello, IllinoisHighs around 1 °C (34 °F), lows around -8 °C (18 °F), rain on about 8 daysHighs around 34 °F (1 °C), lows around 18 °F (-8 °C), rain on about 8 days

United States overall: Cold and snowy north and in the mountains; Florida, Hawaii and the desert Southwest are the picks.

Weather, crowds and prices for any two months in Monticello, Illinois, side by side.

First month

Second month

January: Listed as a month to avoid: Jan–Feb (cold, little open); mid-summer heat and humidity.

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.