Yes
you do need a jacket based on the weather in London, UK 1 second ago
Why? Because just cool enough for a jacket, but not warm enough to ditch it and there are strong winds blowing out there!
55°F13°C & Mostly Clear
Wind is 12 mph20 km/h from the West, gusting to 28 mph45 km/h
| September 15 | ||||
| 10pm | 55°F13°C | 12 mph19 km/h West | Mostly Clear | |
| 11pm | 54°F12°C | 12 mph19 km/h West | Mostly Clear | |
| September 16 | ||||
| 12am | 54°F12°C | 12 mph19 km/h West | Mostly Clear | |
| 1am | 53°F12°C | 12 mph19 km/h West | Mostly Clear | |
| 2am | 53°F12°C | 12 mph19 km/h West | Mostly Clear | |
| 3am | 55°F13°C | 12 mph19 km/h West | Mostly Clear | |
| 4am | 56°F14°C | 12 mph20 km/h West | Mostly Clear | |
| 5am | 59°F15°C | 14 mph22 km/h West | Mostly Clear | |
| 6am | 61°F16°C | 14 mph22 km/h West | Partly Cloudy | |
| 7am | 63°F17°C | 13 mph21 km/h West | Mostly Cloudy | |
| 8am | 64°F18°C | 13 mph20 km/h West | Cloudy | |
| 9am | 65°F18°C | 12 mph20 km/h West | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 15 | 53°F12°C | 66°F19°C | 12 mph19 km/h from West | Mostly Cloudy | Drizzle |
| September 16 | 54°F12°C | 68°F20°C | 12 mph20 km/h from Southwest | Drizzle | Cloudy |
| September 17 | 62°F17°C | 72°F22°C | 13 mph20 km/h from Southwest | Mostly Cloudy | Mostly Cloudy |
| September 18 | 60°F16°C | 74°F24°C | 6 mph10 km/h from Southwest | Mostly Cloudy | Partly Cloudy |
| September 19 | 58°F15°C | 69°F21°C | 7 mph10 km/h from Southwest | Drizzle | Drizzle |
| September 20 | 51°F11°C | 61°F16°C | 6 mph10 km/h from Southwest | Drizzle | Partly Cloudy |
| September 21 | 48°F9°C | 62°F17°C | 9 mph15 km/h from North | Drizzle | Mostly Cloudy |
Yes
Low of 55°F13°C, High of 68°F20°CWind: 12 mph20 km/h
Precipitation: 77% rain