When to go · Great Falls
Great Falls in September
Great month. Inside Great Falls's best window: Jun–Sep.
Key facts
- Verdict
- Great
- Temperature
- 23°C (73°F)73°F (23°C) / 7°C (45°F)45°F (7°C)
- average high / low
- Rain days
- 7
- Crowds
- Medium
- United States overall
- Prices
- Medium
- United States overall
Verdict
Inside Great Falls's best window: Jun–Sep.
Is another month better than September?
No other month rates higher than September for Great Falls in this guide.
Weather in September
- Great FallsHighs around 23 °C (73 °F), lows around 7 °C (45 °F), rain on about 7 daysHighs around 73 °F (23 °C), lows around 45 °F (7 °C), rain on about 7 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.
Compare two months
Weather, crowds and prices for any two months in Great Falls, side by side.
Verdict
Sep: Great
Jun: Great
Daytime high
Sep: 23 °C (73 °F)73 °F (23 °C)
Jun: 24 °C (75 °F)75 °F (24 °C)
Night low
Sep: 7 °C (45 °F)45 °F (7 °C)
Jun: 9 °C (48 °F)48 °F (9 °C)
Rain days
Sep: 7 (better)
Jun: 11
Crowds
Sep: Medium
Jun: High
Prices
Sep: Medium
Jun: High
Festivals listed
Sep: 1
Jun: 0
September: Inside Great Falls's best window: Jun–Sep.
June: Inside Great Falls's best window: Jun–Sep.
Great Falls: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm layer for the evenings