Last updated: March 2, 2024
The weather in Heathrow, United States, during October is characterized by an average temperature of 25°C (77°F). Highs can soar to 32°C (90°F), while lows may dip to 14°C (57°F). Typically, the humidity level in Heathrow throughout October hovers around 81%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In October, Heathrow averages 82 mm (3.2 inches) of rainfall, typically over the course of 15 rainy days. The month enjoys an average of 11 hours 25 minutes of daylight, with the sun shining for approximately 9 hours 29 minutes each day. Additionally, there is a 45% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In October, the UV Index in Heathrow 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 | 0 | 1 | 2 | 4 | 6 | 8 | 9 | 8 | 7 | 4 | 2 | 1 | 0 |
| 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 | ||||||