When to go · Idaho Falls
Idaho Falls in September
Great month. Inside Idaho Falls's best window: Jun–Sep (warm, parks open); May and Sep for fewer crowds.
Key facts
- Verdict
- Great
- Temperature
- 25°C77°F / 7°C45°F
- average high / low
- Rain days
- 5
- Crowds
- Medium
- United States overall
- Prices
- Medium
- United States overall
Verdict
GreatBest and avoid months for Idaho Falls
Inside Idaho Falls's best window: Jun–Sep (warm, parks open); May and Sep for fewer crowds.
Weather in September
- Idaho FallsHighs around 25 °C, lows around 7 °C, rain on about 5 daysHighs around 77 °F, lows around 45 °F, 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.
Labor Day big impact
1st Monday of September · United States
End of summer; last big road-trip weekend.
Crowds and prices
- Crowds · United States overall
- Medium
- Prices · United States overall
- Medium
United States overall: After Labor Day the crowds drop and parks stay open; Florida and the Gulf are at hurricane peak.
What to pack
- A warm layer for the evenings