Last updated: March 2, 2024
The weather in Hillsboro, United States, during May is characterized by an average temperature of 18°C (65°F). Highs can soar to 31°C (88°F), while lows may dip to 3°C (38°F). Typically, the humidity level in Hillsboro throughout May hovers around 79%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, Hillsboro averages 149 mm (5.8 inches) of rainfall, typically over the course of 14 rainy days. The month enjoys an average of 14 hours 24 minutes of daylight, with the sun shining for approximately 8 hours 57 minutes each day. Additionally, there is a 32% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In May, the UV Index in Hillsboro 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 | 1 | 2 | 4 | 6 | 8 | 10 | 10 | 9 | 7 | 5 | 3 | 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 | ||||||