Last updated: March 2, 2024
The weather in St. Mary's, United States, during May is characterized by an average temperature of 7°C (45°F). Highs can soar to 20°C (68°F), while lows may dip to -3°C (26°F). Typically, the humidity level in St. Mary's throughout May hovers around 80%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, St. Mary's averages 63 mm (2.5 inches) of rainfall, typically over the course of 16 rainy days. The month enjoys an average of 17 hours 48 minutes of daylight, with the sun shining for approximately 9 hours 33 minutes each day. Additionally, there is a 42% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In May, the UV Index in St. Mary's reaches a maximum of 5, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 30 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 | 1 | 2 | 3 | 4 | 5 | 5 | 5 | 5 | 4 | 3 | 2 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||