Yes
you do need a jacket based on the weather in Hertfordshire, UK 1 second ago
Why? Because it's really really huffing out there!
64°F18°C & Windy
Wind is 24 mph38 km/h from the Southwest, gusting to 44 mph71 km/h
| September 15 | ||||
| 11am | 64°F18°C | 23 mph37 km/h Southwest | Drizzle | |
| 12pm | 62°F17°C | 23 mph36 km/h Southwest | Windy | |
| 1pm | 61°F16°C | 21 mph34 km/h Southwest | Windy | |
| 2pm | 60°F16°C | 20 mph32 km/h West | Windy | |
| 3pm | 59°F15°C | 20 mph31 km/h West | Windy | |
| 4pm | 58°F14°C | 20 mph31 km/h West | Windy | |
| 5pm | 57°F14°C | 20 mph31 km/h West | Windy | |
| 6pm | 57°F14°C | 19 mph31 km/h West | Windy | |
| 7pm | 56°F13°C | 18 mph29 km/h West | Windy | |
| 8pm | 55°F13°C | 17 mph28 km/h West | Windy | |
| 9pm | 54°F12°C | 17 mph27 km/h West | Windy | |
| 10pm | 53°F12°C | 17 mph27 km/h West | Windy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 14 | 56°F13°C | 65°F18°C | 20 mph32 km/h from Southwest | Drizzle | Windy |
| September 15 | 52°F11°C | 64°F18°C | 15 mph24 km/h from West | Mostly Cloudy | Drizzle |
| September 16 | 53°F12°C | 68°F20°C | 16 mph26 km/h from Southwest | Thunderstorms | Cloudy |
| September 17 | 60°F16°C | 71°F22°C | 14 mph23 km/h from Southwest | Mostly Cloudy | Cloudy |
| September 18 | 60°F16°C | 74°F23°C | 9 mph15 km/h from Southwest | Mostly Cloudy | Partly Cloudy |
| September 19 | 58°F15°C | 71°F22°C | 8 mph13 km/h from South | Mostly Cloudy | Partly Cloudy |
| September 20 | 53°F12°C | 65°F18°C | 11 mph18 km/h from Southwest | Drizzle | Drizzle |
Yes
Low of 52°F11°C, High of 64°F18°CWind: 15 mph24 km/h
Precipitation: None