Last updated: March 2, 2024
The weather in Great Falls, United States, during August is characterized by an average temperature of 26°C (80°F). Highs can soar to 35°C (95°F), while lows may dip to 18°C (65°F). Typically, the humidity level in Great Falls throughout August hovers around 74%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In August, Great Falls averages 129 mm (5.1 inches) of rainfall, typically over the course of 16 rainy days. The month enjoys an average of 13 hours 22 minutes of daylight, with the sun shining for approximately 9 hours 57 minutes each day. Additionally, there is a 41% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In August, the UV Index in Great Falls reaches a maximum of 10, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 1 | 2 | 4 | 7 | 9 | 10 | 10 | 9 | 6 | 4 | 2 | 1 |
| Exposure | Low | Moderate | High | VeryHigh | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 25 min | 30 min | 45 min | ||||||