When to go · Idaho Falls
Idaho Falls in December
Avoid month. Listed as a month to avoid: Nov–Mar (park entrances closed, zoo closed, cold).
Key facts
- Verdict
- Avoid
- Temperature
- 1°C (34°F)34°F (1°C) / −10°C (14°F)14°F (−10°C)
- average high / low
- Rain days
- 9
- Crowds
- High
- United States overall
- Prices
- High
- United States overall
Verdict
Listed as a month to avoid: Nov–Mar (park entrances closed, zoo closed, cold).
Is another month better than December?
December is rated avoid. These months rate higher:
- MayGreatInside Idaho Falls's best window: Jun–Sep (warm, parks open); May and Sep for fewer crowds.
- JuneGreatInside Idaho Falls's best window: Jun–Sep (warm, parks open); May and Sep for fewer crowds.
- JulyGreatInside Idaho Falls's best window: Jun–Sep (warm, parks open); May and Sep for fewer crowds.
- AugustGreatInside Idaho Falls's best window: Jun–Sep (warm, parks open); May and Sep for fewer crowds.
Weather in December
- Idaho FallsHighs around 1 °C (34 °F), lows around -10 °C (14 °F), rain on about 9 daysHighs around 34 °F (1 °C), lows around 14 °F (-10 °C), rain on about 9 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 Idaho Falls, side by side.
Verdict
Dec: Avoid
May: Great (better)
Daytime high
Dec: 1 °C (34 °F)34 °F (1 °C)
May: 20 °C (68 °F)68 °F (20 °C)
Night low
Dec: -10 °C (14 °F)14 °F (-10 °C)
May: 5 °C (41 °F)41 °F (5 °C)
Rain days
Dec: 9
May: 9
Crowds
Dec: High
May: Medium
Prices
Dec: High
May: Medium
Festivals listed
Dec: 1
May: 1
December: Listed as a month to avoid: Nov–Mar (park entrances closed, zoo closed, cold).
May: Inside Idaho Falls's best window: Jun–Sep (warm, parks open); May and Sep for fewer crowds.
Idaho Falls: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm coat, hat and gloves for mornings and evenings