Last updated: March 2, 2024
The weather in Hillsboro, United States, during May is characterized by an average temperature of 22°C (72°F). Highs can soar to 32°C (91°F), while lows may dip to 9°C (49°F). Typically, the humidity level in Hillsboro throughout May hovers around 83%.
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Average temperature
Maximum temperature
Humidity
In May, Hillsboro averages 105 mm (4.1 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 13 hours 58 minutes of daylight, with the sun shining for approximately 9 hours 48 minutes each day. Additionally, there is a 34% probability of sunny days during this period.
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Chance of sun
In May, the UV Index in Hillsboro reaches a maximum of 11, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 10 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 | 7 | 9 | 10 | 11 | 9 | 7 | 5 | 3 | 1 | 1 |
| Exposure | Low | Moderate | High | VeryHigh | Extreme | VeryHigh | High | Moderate | Low | ||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 10 min | 15 min | 25 min | 30 min | 45 min | ||||