Great Falls in August
8.3out of 10
Yes, a good time to go
Warm and comfortable: highs around 30°C. Some rain: about 5 rainy days.
30°CAvg high
13°CAvg low
5Rainy days (28 mm)
14:04 hDaylight
06:27Sunrise · 20:31 Sunset
Why this score
- Warm and comfortable: highs around 30°C
- Some rain: about 5 rainy days
What to wear and pack
- T-shirts and light layers
- A light jacket for cooler evenings
- Shorts or a light skirt
- Sunscreen, sunglasses and a hat
How reliable is the forecast?
Rainfall in August is fairly consistent from year to year (2.7 days). Averages cover 30 years (1991–2020). Individual days can differ a lot.
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
How hot is Great Falls in August?
Daytime highs average 30°C and nights about 13°C.
When is the best time to visit Great Falls?
The best months are August, September, July.