Yes
you do need a jacket based on the weather in Welwyn Garden City, UK 1 second ago
Why? Because it's fairly windy outside!
63°F17°C & Cloudy
Wind is 12 mph19 km/h from the Southwest, gusting to 22 mph35 km/h
| September 18 | ||||
| 12am | 63°F17°C | 12 mph19 km/h Southwest | Cloudy | |
| 1am | 62°F17°C | 12 mph19 km/h Southwest | Cloudy | |
| 2am | 63°F17°C | 12 mph19 km/h Southwest | Cloudy | |
| 3am | 63°F17°C | 12 mph20 km/h Southwest | Cloudy | |
| 4am | 64°F18°C | 13 mph21 km/h Southwest | Cloudy | |
| 5am | 65°F18°C | 14 mph22 km/h Southwest | Cloudy | |
| 6am | 66°F19°C | 14 mph23 km/h Southwest | Cloudy | |
| 7am | 68°F20°C | 15 mph25 km/h Southwest | Windy | |
| 8am | 69°F20°C | 15 mph25 km/h Southwest | Windy | |
| 9am | 69°F21°C | 15 mph24 km/h Southwest | Mostly Cloudy | |
| 10am | 70°F21°C | 15 mph25 km/h Southwest | Windy | |
| 11am | 70°F21°C | 15 mph25 km/h Southwest | Windy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 17 | 62°F17°C | 70°F21°C | 14 mph23 km/h from Southwest | Cloudy | Mostly Cloudy |
| September 18 | 59°F15°C | 76°F24°C | 9 mph15 km/h from South | Partly Cloudy | Partly Cloudy |
| September 19 | 55°F13°C | 69°F21°C | 10 mph16 km/h from South | Drizzle | Drizzle |
| September 20 | 49°F10°C | 60°F15°C | 9 mph15 km/h from West | Drizzle | Drizzle |
| September 21 | 46°F8°C | 58°F15°C | 13 mph21 km/h from North | Drizzle | Mostly Clear |
| September 22 | 42°F5°C | 58°F15°C | 9 mph15 km/h from North | Partly Cloudy | Partly Cloudy |
| September 23 | 44°F7°C | 60°F15°C | 8 mph13 km/h from North | Drizzle | Mostly Cloudy |
No
Low of 59°F15°C, High of 76°F25°CWind: 9 mph15 km/h
Precipitation: None