Last updated: March 2, 2024
The weather in Willow Grove, United States, during May is characterized by an average temperature of 17°C (63°F). Highs can soar to 32°C (90°F), while lows may dip to 5°C (41°F). Typically, the humidity level in Willow Grove throughout May hovers around 75%.
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Average temperature
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Humidity
In May, Willow Grove averages 138 mm (5.4 inches) of rainfall, typically over the course of 14 rainy days. The month enjoys an average of 14 hours 25 minutes of daylight, with the sun shining for approximately 8 hours 48 minutes each day. Additionally, there is a 40% probability of sunny days during this period.
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Chance of sun
In May, the UV Index in Willow Grove 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 | 1 | 2 | 4 | 6 | 8 | 9 | 10 | 9 | 7 | 5 | 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 | ||||||