Last updated: March 2, 2024
The weather in Williston Highlands, United States, during September is characterized by an average temperature of 27°C (80°F). Highs can soar to 35°C (95°F), while lows may dip to 19°C (66°F). Typically, the humidity level in Williston Highlands throughout September hovers around 83%.
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Average temperature
Maximum temperature
Humidity
In September, Williston Highlands averages 138 mm (5.5 inches) of rainfall, typically over the course of 16 rainy days. The month enjoys an average of 12 hours 17 minutes of daylight, with the sun shining for approximately 10 hours 2 minutes each day. Additionally, there is a 33% probability of sunny days during this period.
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In September, the UV Index in Williston Highlands 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 | 0 | 1 | 2 | 4 | 7 | 9 | 10 | 10 | 8 | 6 | 3 | 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 | ||||||