Last updated: March 2, 2024
The weather in Salem, United States, during May is characterized by an average temperature of 18°C (66°F). Highs can soar to 30°C (87°F), while lows may dip to 6°C (43°F). Typically, the humidity level in Salem throughout May hovers around 83%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, Salem averages 178 mm (7.0 inches) of rainfall, typically over the course of 14 rainy days. The month enjoys an average of 14 hours 12 minutes of daylight, with the sun shining for approximately 8 hours 59 minutes each day. Additionally, there is a 27% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In May, the UV Index in Salem reaches a maximum of 10, 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 | 6 | 8 | 10 | 11 | 10 | 8 | 6 | 3 | 2 | 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 | ||||