No
you don't need a jacket based on the weather in Heathrow Airport (LHR), Hounslow, UK 1 second ago
78°F25°C & Mostly Clear
Wind is 6 mph10 km/h from the Southwest, gusting to 15 mph24 km/h
| July 18 | ||||
| 8am | 79°F26°C | 7 mph11 km/h Southwest | Mostly Clear | |
| 9am | 81°F27°C | 6 mph10 km/h Southwest | Partly Cloudy | |
| 10am | 83°F28°C | 6 mph10 km/h Southwest | Partly Cloudy | |
| 11am | 82°F28°C | 6 mph10 km/h Southwest | Mostly Cloudy | |
| 12pm | 82°F28°C | 7 mph11 km/h Southwest | Mostly Cloudy | |
| 1pm | 81°F27°C | 7 mph12 km/h Southwest | Cloudy | |
| 2pm | 79°F26°C | 7 mph12 km/h South | Cloudy | |
| 3pm | 77°F25°C | 6 mph10 km/h Southwest | Cloudy | |
| 4pm | 74°F24°C | 5 mph8 km/h Southwest | Cloudy | |
| 5pm | 72°F22°C | 4 mph7 km/h Southwest | Cloudy | |
| 6pm | 71°F21°C | 4 mph6 km/h Southwest | Cloudy | |
| 7pm | 69°F21°C | 5 mph8 km/h South | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| July 17 | 64°F18°C | 83°F28°C | 6 mph9 km/h from Southwest | Partly Cloudy | Rain |
| July 18 | 63°F17°C | 73°F23°C | 5 mph8 km/h from Southwest | Rain | Drizzle |
| July 19 | 58°F14°C | 69°F21°C | 11 mph18 km/h from South | Drizzle | Rain |
| July 20 | 57°F14°C | 69°F21°C | 6 mph10 km/h from West | Drizzle | Partly Cloudy |
| July 21 | 60°F15°C | 71°F22°C | 9 mph15 km/h from Southwest | Mostly Cloudy | Drizzle |
| July 22 | 59°F15°C | 70°F21°C | 5 mph8 km/h from Northwest | Drizzle | Drizzle |
| July 23 | 58°F14°C | 72°F22°C | 6 mph10 km/h from Northwest | Drizzle | Partly Cloudy |
No
Low of 63°F17°C, High of 73°F23°CWind: 5 mph8 km/h
Precipitation: 81% rain