Last updated: March 2, 2024
The weather in Chehalis, United States, during May is characterized by an average temperature of 13°C (56°F). Highs can soar to 27°C (81°F), while lows may dip to 3°C (38°F). Typically, the humidity level in Chehalis throughout May hovers around 84%.
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Average temperature
Maximum temperature
Humidity
In May, Chehalis averages 71 mm (2.8 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 15 hours 3 minutes of daylight, with the sun shining for approximately 9 hours 16 minutes each day. Additionally, there is a 33% probability of sunny days during this period.
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Chance of sun
In May, the UV Index in Chehalis reaches a maximum of 9, 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 | 2 | 3 | 5 | 7 | 8 | 9 | 8 | 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 | ||||||