Last updated: March 2, 2024
The weather in Williamston, United States, during September is characterized by an average temperature of 24°C (75°F). Highs can soar to 34°C (93°F), while lows may dip to 13°C (55°F). Typically, the humidity level in Williamston throughout September hovers around 80%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Williamston averages 129 mm (5.1 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 12 hours 21 minutes of daylight, with the sun shining for approximately 9 hours 30 minutes each day. Additionally, there is a 55% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Williamston reaches a maximum of 9, 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 | 6 | 8 | 9 | 8 | 6 | 4 | 2 | 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 | ||||||