Last updated: March 2, 2024
The weather in Union, United States, during May is characterized by an average temperature of 10°C (49°F). Highs can soar to 25°C (77°F), while lows may dip to -4°C (26°F). Typically, the humidity level in Union throughout May hovers around 77%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, Union averages 75 mm (2.9 inches) of rainfall, typically over the course of 12 rainy days. The month enjoys an average of 14 hours 54 minutes of daylight, with the sun shining for approximately 10 hours 21 minutes each day. Additionally, there is a 46% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In May, the UV Index in Union reaches a maximum of 10, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, 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 | 10 | 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 | ||||||