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, your hat has officially retired from your head!
59°F15°C & Mostly Clear
Wind is 10 mph16 km/h from the Southwest, gusting to 21 mph33 km/h
| August 30 | ||||
| 10pm | 58°F14°C | 10 mph15 km/h Southwest | Partly Cloudy | |
| 11pm | 57°F14°C | 9 mph15 km/h Southwest | Partly Cloudy | |
| August 31 | ||||
| 12am | 56°F14°C | 9 mph15 km/h Southwest | Mostly Clear | |
| 1am | 56°F13°C | 8 mph13 km/h South | Mostly Clear | |
| 2am | 56°F14°C | 8 mph12 km/h South | Mostly Clear | |
| 3am | 59°F15°C | 9 mph15 km/h South | Partly Cloudy | |
| 4am | 61°F16°C | 11 mph18 km/h South | Mostly Clear | |
| 5am | 63°F17°C | 12 mph20 km/h South | Partly Cloudy | |
| 6am | 65°F18°C | 14 mph22 km/h South | Partly Cloudy | |
| 7am | 66°F19°C | 14 mph23 km/h South | Partly Cloudy | |
| 8am | 67°F19°C | 16 mph25 km/h South | Windy | |
| 9am | 67°F19°C | 16 mph25 km/h South | Windy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| August 30 | 56°F13°C | 68°F20°C | 14 mph22 km/h from South | Partly Cloudy | Mostly Clear |
| August 31 | 56°F14°C | 67°F19°C | 14 mph22 km/h from Southwest | Drizzle | Partly Cloudy |
| September 1 | 53°F12°C | 65°F19°C | 11 mph17 km/h from South | Rain | Drizzle |
| September 2 | 57°F14°C | 69°F20°C | 16 mph26 km/h from Southwest | Rain | Rain |
| September 3 | 55°F13°C | 65°F19°C | 11 mph18 km/h from Southwest | Rain | Drizzle |
| September 4 | 52°F11°C | 67°F19°C | 10 mph16 km/h from Southwest | Mostly Cloudy | Mostly Cloudy |
| September 5 | 55°F13°C | 68°F20°C | 9 mph14 km/h from South | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 56°F14°C, High of 67°F20°CWind: 14 mph22 km/h
Precipitation: 41% rain