Best Time to Visit Great Falls: Month-by-Month Guide
Best months for Great Falls: August, September, July.
- Best months for Great Falls: August, September, July.
- Peak season is July, August, June. Expect higher prices and more visitors (estimated from the climate, not from visitor counts).
- Shoulder season: May, September, October. Good weather without the busiest period.
- Wettest months: May, June, April.
- The least pleasant month is January (score 4.4).
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 1°C | -7°C | 20 mm | 6 | – | – | 4.4 |
| February | 3°C | -7°C | 19 mm | 6 | – | – | 4.8 |
| March | 9°C | -3°C | 26 mm | 7 | – | – | 5.7 |
| April | 14°C | 2°C | 52 mm | 9 | – | – | 6.5 |
| May | 20°C | 6°C | 61 mm | 11 | – | – | 7.3 |
| June | 24°C | 10°C | 73 mm | 10 | – | – | 7.7 |
| July | 30°C | 14°C | 24 mm | 5 | – | – | 8.1 |
| August | 30°C | 13°C | 28 mm | 5 | – | – | 8.3 |
| September | 23°C | 9°C | 36 mm | 6 | – | – | 8.3 |
| October | 15°C | 3°C | 34 mm | 6 | – | – | 7.1 |
| November | 7°C | -2°C | 23 mm | 6 | – | – | 5.6 |
| December | 1°C | -6°C | 21 mm | 6 | – | – | 4.5 |
Frequently asked questions
When is the best time to visit Great Falls?
The best months are August, September, July.
When is the rainy season in Great Falls?
The wettest months are May, June, April.