Last updated: March 2, 2024
The weather in Glastonbury, United States, during August is characterized by an average temperature of 23°C (74°F). Highs can soar to 33°C (92°F), while lows may dip to 12°C (53°F). Typically, the humidity level in Glastonbury throughout August hovers around 65%.
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Average temperature
Maximum temperature
Humidity
In August, Glastonbury averages 90 mm (3.5 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 13 hours 45 minutes of daylight, with the sun shining for approximately 10 hours 31 minutes each day. Additionally, there is a 29% probability of sunny days during this period.
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Rainy days
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Chance of sun
In August, the UV Index in Glastonbury 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 | 2 | 3 | 5 | 7 | 8 | 9 | 8 | 7 | 5 | 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 | ||||||