Last updated: March 2, 2024
The weather in Williston, United States, during April is characterized by an average temperature of 6°C (43°F). Highs can soar to 21°C (71°F), while lows may dip to -5°C (24°F). Typically, the humidity level in Williston throughout April hovers around 85%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In April, Williston averages 109 mm (4.3 inches) of rainfall, typically over the course of 15 rainy days. The month enjoys an average of 13 hours 29 minutes of daylight, with the sun shining for approximately 7 hours 9 minutes each day. Additionally, there is a 35% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In April, the UV Index in Williston reaches a maximum of 8, 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 | 2 | 3 | 5 | 6 | 7 | 8 | 7 | 5 | 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 | ||||||