Yes

you do need a jacket based on the weather in Belmont Rd, Hemel Hempstead HP3 9NX, UK 1 second ago

Why? Because it's cool. Pleasantly cool, but cool!
55°F13°C & Partly Cloudy

Wind is 7 mph12 km/h from the Southwest, gusting to 14 mph23 km/h
June 15
2am56°F14°C9 mph15 km/h WestMostly Cloudy
3am58°F15°C10 mph16 km/h WestMostly Cloudy
4am61°F16°C10 mph15 km/h WestMostly Cloudy
5am63°F17°C9 mph15 km/h WestMostly Cloudy
6am66°F19°C10 mph15 km/h WestMostly Cloudy
7am68°F20°C10 mph16 km/h WestMostly Cloudy
8am70°F21°C11 mph17 km/h WestPartly Cloudy
9am70°F21°C11 mph18 km/h WestMostly Clear
10am72°F22°C11 mph18 km/h WestPartly Cloudy
11am72°F22°C11 mph18 km/h WestPartly Cloudy
12pm72°F22°C12 mph19 km/h WestPartly Cloudy
1pm71°F22°C12 mph19 km/h WestPartly Cloudy
DateLowHighWindDayNight
June 1454°F12°C72°F22°C11 mph17 km/h from WestPartly CloudyMostly Clear
June 1555°F13°C76°F24°C5 mph8 km/h from WestMostly ClearMostly Clear
June 1657°F14°C77°F25°C8 mph13 km/h from WestPartly CloudyPartly Cloudy
June 1760°F15°C77°F25°C5 mph9 km/h from NorthwestPartly CloudyClear
June 1857°F14°C81°F27°C8 mph13 km/h from SoutheastMostly ClearPartly Cloudy
June 1959°F15°C82°F28°C7 mph12 km/h from SoutheastMostly CloudyMostly Cloudy
June 2061°F16°C80°F27°C6 mph9 km/h from NortheastPartly CloudyPartly Cloudy

Yes

Low of 55°F13°C, High of 76°F25°C
Wind: 5 mph8 km/h
Precipitation: None

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