Yes
you do need a jacket based on the weather in Hemel Hempstead, UK 1 second ago
Why? Because just cool enough for a jacket, but not warm enough to ditch it and it's so windy, you’re practically horizontal just trying to walk!
57°F14°C & Mostly Clear
Wind is 14 mph22 km/h from the East, gusting to 26 mph42 km/h
| April 19 | ||||
| 1pm | 56°F14°C | 14 mph22 km/h East | Mostly Clear | |
| 2pm | 55°F13°C | 13 mph21 km/h Northeast | Mostly Clear | |
| 3pm | 51°F11°C | 12 mph19 km/h Northeast | Mostly Cloudy | |
| 4pm | 49°F9°C | 11 mph18 km/h Northeast | Mostly Clear | |
| 5pm | 47°F8°C | 11 mph17 km/h Northeast | Mostly Clear | |
| 6pm | 45°F7°C | 10 mph16 km/h Northeast | Mostly Clear | |
| 7pm | 43°F6°C | 10 mph16 km/h Northeast | Mostly Clear | |
| 8pm | 42°F6°C | 10 mph16 km/h Northeast | Mostly Clear | |
| 9pm | 42°F5°C | 10 mph16 km/h Northeast | Mostly Cloudy | |
| 10pm | 42°F5°C | 11 mph17 km/h Northeast | Mostly Cloudy | |
| 11pm | 41°F5°C | 10 mph16 km/h Northeast | Mostly Cloudy | |
| April 20 | ||||
| 12am | 41°F5°C | 10 mph15 km/h Northeast | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 18 | 43°F6°C | 61°F16°C | 10 mph17 km/h from East | Mostly Cloudy | Partly Cloudy |
| April 19 | 41°F5°C | 58°F14°C | 9 mph15 km/h from East | Mostly Cloudy | Mostly Cloudy |
| April 20 | 45°F7°C | 58°F14°C | 6 mph9 km/h from Southwest | Mostly Cloudy | Partly Cloudy |
| April 21 | 42°F6°C | 58°F14°C | 7 mph12 km/h from West | Mostly Cloudy | Drizzle |
| April 22 | 46°F8°C | 58°F15°C | 9 mph14 km/h from East | Drizzle | Mostly Cloudy |
| April 23 | 43°F6°C | 61°F16°C | 7 mph11 km/h from Northeast | Mostly Cloudy | Mostly Cloudy |
| April 24 | 45°F7°C | 62°F16°C | 6 mph9 km/h from East | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 41°F5°C, High of 58°F15°CWind: 9 mph15 km/h
Precipitation: None