No
you don't need a jacket based on the weather in Hertfordshire, UK 1 second ago
73°F23°C & Cloudy
Wind is 9 mph14 km/h from the Northwest, gusting to 17 mph27 km/h
| July 31 | ||||
| 11am | 73°F23°C | 9 mph15 km/h Northwest | Cloudy | |
| 12pm | 73°F23°C | 10 mph16 km/h Northwest | Mostly Cloudy | |
| 1pm | 73°F23°C | 10 mph16 km/h Northwest | Partly Cloudy | |
| 2pm | 71°F22°C | 10 mph16 km/h Northwest | Mostly Clear | |
| 3pm | 69°F21°C | 9 mph15 km/h Northwest | Mostly Clear | |
| 4pm | 66°F19°C | 10 mph16 km/h Northwest | Mostly Clear | |
| 5pm | 64°F18°C | 9 mph15 km/h Northwest | Mostly Clear | |
| 6pm | 62°F17°C | 9 mph15 km/h Northwest | Mostly Clear | |
| 7pm | 60°F16°C | 9 mph15 km/h Northwest | Mostly Clear | |
| 8pm | 59°F15°C | 10 mph16 km/h Northwest | Partly Cloudy | |
| 9pm | 57°F14°C | 10 mph16 km/h Northwest | Partly Cloudy | |
| 10pm | 56°F14°C | 9 mph15 km/h Northwest | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| July 30 | 59°F15°C | 73°F23°C | 6 mph10 km/h from Northwest | Drizzle | Partly Cloudy |
| July 31 | 56°F13°C | 68°F20°C | 9 mph15 km/h from Northwest | Rain | Mostly Clear |
| August 1 | 53°F11°C | 71°F22°C | 7 mph12 km/h from Northwest | Partly Cloudy | Partly Cloudy |
| August 2 | 55°F13°C | 72°F22°C | 11 mph17 km/h from West | Rain | Mostly Cloudy |
| August 3 | 56°F13°C | 69°F21°C | 14 mph22 km/h from Southwest | Drizzle | Drizzle |
| August 4 | 53°F12°C | 69°F21°C | 15 mph25 km/h from West | Windy | Partly Cloudy |
| August 5 | 53°F12°C | 72°F22°C | 8 mph13 km/h from West | Partly Cloudy | Mostly Cloudy |
Yes
Low of 55°F13°C, High of 68°F20°CWind: 9 mph15 km/h
Precipitation: 33% rain