Last updated: March 2, 2024
The weather in Grignon, France, during July is characterized by an average temperature of 16°C (61°F). Highs can soar to 27°C (80°F), while lows may dip to 6°C (42°F). Typically, the humidity level in Grignon throughout July hovers around 72%.
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Average temperature
Maximum temperature
Humidity
In July, Grignon averages 103 mm (4.0 inches) of rainfall, typically over the course of 15 rainy days. The month enjoys an average of 15 hours 16 minutes of daylight, with the sun shining for approximately 13 hours 38 minutes each day. Additionally, there is a 38% probability of sunny days during this period.
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Chance of sun
In July, the UV Index in Grignon reaches a maximum of 10, 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 | 1 | 3 | 5 | 7 | 9 | 10 | 10 | 9 | 7 | 5 | 3 | 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 | ||||||