Last updated: March 2, 2024
The weather in Katy, United States, during May is characterized by an average temperature of 25°C (78°F). Highs can soar to 34°C (94°F), while lows may dip to 14°C (58°F). Typically, the humidity level in Katy throughout May hovers around 79%.
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Average temperature
Maximum temperature
Humidity
In May, Katy averages 165 mm (6.5 inches) of rainfall, typically over the course of 14 rainy days. The month enjoys an average of 13 hours 39 minutes of daylight, with the sun shining for approximately 9 hours 56 minutes each day. Additionally, there is a 28% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In May, the UV Index in Katy reaches a maximum of 11, 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 | 1 | 3 | 5 | 8 | 10 | 11 | 11 | 9 | 6 | 4 | 2 | 1 |
| Exposure | Low | Moderate | VeryHigh | Extreme | VeryHigh | High | Moderate | Low | |||||
| Time to burn | 45 min | 30 min | 15 min | 10 min | 15 min | 25 min | 30 min | 45 min | |||||