No
you don't need a jacket based on the weather in Hemel Hempstead, UK 25 minutes ago
67°F19°C & Drizzle
Wind is 9 mph15 km/h from the E, gusting to 19 mph31 km/h
| September 22 | ||||
| 9am | 67°F19°C | 9 mph14 km/h E | Drizzle | |
| 10am | 66°F19°C | 9 mph14 km/h SE | Rain | |
| 11am | 66°F19°C | 7 mph11 km/h SE | Cloudy | |
| 12pm | 65°F18°C | 7 mph11 km/h SE | Rain | |
| 1pm | 64°F18°C | 6 mph9 km/h SE | Drizzle | |
| 2pm | 63°F17°C | 6 mph9 km/h SE | Drizzle | |
| 3pm | 62°F17°C | 5 mph7 km/h SE | Cloudy | |
| 4pm | 61°F16°C | 4 mph7 km/h SE | Cloudy | |
| 5pm | 61°F16°C | 4 mph6 km/h SE | Cloudy | |
| 6pm | 60°F16°C | 3 mph4 km/h SE | Cloudy | |
| 7pm | 60°F15°C | 2 mph3 km/h SE | Drizzle | |
| 8pm | 59°F15°C | 2 mph3 km/h SE | Drizzle | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 21 | 59°F15°C | 67°F19°C | 7 mph12 km/h from E | Rain | Rain |
| September 22 | 56°F13°C | 65°F18°C | 8 mph13 km/h from SW | Rain | Drizzle |
| September 23 | 53°F11°C | 63°F17°C | 9 mph14 km/h from NW | Mostly Cloudy | Drizzle |
| September 24 | 51°F10°C | 62°F16°C | 10 mph16 km/h from S | Rain | Rain |
| September 25 | 52°F11°C | 60°F16°C | 9 mph15 km/h from W | Rain | Drizzle |
| September 26 | 46°F8°C | 57°F14°C | 12 mph19 km/h from NW | Mostly Cloudy | Partly Cloudy |
| September 27 | 41°F5°C | 59°F15°C | 11 mph17 km/h from W | Partly Cloudy | Mostly Clear |
Yes
Low of 56°F14°C, High of 64°F18°CWind: 8 mph13 km/h
Precipitation: 71% rain