Last updated: March 2, 2024
The weather in Terra Alta, United States, during September is characterized by an average temperature of 18°C (64°F). Highs can soar to 28°C (83°F), while lows may dip to 6°C (43°F). Typically, the humidity level in Terra Alta throughout September hovers around 68%.
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Average temperature
Maximum temperature
Humidity
In September, Terra Alta averages 120 mm (4.7 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 12 hours 23 minutes of daylight, with the sun shining for approximately 9 hours 24 minutes each day. Additionally, there is a 50% probability of sunny days during this period.
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Chance of sun
In September, the UV Index in Terra Alta reaches a maximum of 8, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, 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 | 6 | 8 | 8 | 8 | 6 | 4 | 3 | 1 | 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 | ||||||