When to go · Collinsville, Illinois
Collinsville, Illinois in December
Mixed month. Outside the best window (May–Oct (festivals, warm weather)). Across United States: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.
Key facts
- Verdict
- Mixed
- Temperature
- −2°C (28°F)28°F (−2°C) / 20°C (68°F)68°F (20°C)
- average high / low
- Rain days
- 5
- Crowds
- High
- United States overall
- Prices
- High
- United States overall
Verdict
Outside the best window (May–Oct (festivals, warm weather)). Across United States: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.
Is another month better than December?
December is rated mixed. These months rate higher:
- MayGreatInside Collinsville, Illinois's best window: May–Oct (festivals, warm weather).
- JuneGreatInside Collinsville, Illinois's best window: May–Oct (festivals, warm weather).
- JulyGreatInside Collinsville, Illinois's best window: May–Oct (festivals, warm weather).
- AugustGreatInside Collinsville, Illinois's best window: May–Oct (festivals, warm weather).
Weather in December
- Collinsville, IllinoisHighs around -2 °C (28 °F), lows around 20 °C (68 °F), rain on about 5 daysHighs around 28 °F (-2 °C), lows around 68 °F (20 °C), rain on about 5 days
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Christmas Day big impact
25 Dec · United States
Most businesses closed; flights full from about 20 Dec to 2 Jan.
Crowds and prices
- Crowds · United States overall
- High
- Prices · United States overall
- High
United States overall: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.
High-price month: see what to book ahead.
Compare two months
Weather, crowds and prices for any two months in Collinsville, Illinois, side by side.
Verdict
Dec: Mixed
May: Great (better)
Daytime high
Dec: -2 °C (28 °F)28 °F (-2 °C)
May: 20 °C (68 °F)68 °F (20 °C)
Night low
Dec: 20 °C (68 °F)68 °F (20 °C)
May: 55 °C (131 °F)131 °F (55 °C)
Rain days
Dec: 5
May: 5
Crowds
Dec: High
May: Medium
Prices
Dec: High
May: Medium
Festivals listed
Dec: 1
May: 1
December: Outside the best window (May–Oct (festivals, warm weather)). Across United States: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.
May: Inside Collinsville, Illinois's best window: May–Oct (festivals, warm weather).
Collinsville, Illinois: figures are long-term averages from this guide, not a forecast.
What to pack
Nothing unusual for the weather this month.