Yes

you do need a jacket based on the weather in Chelmsford, UK 1 second ago

Why? Because it's really really huffing out there!
59°F15°C & Windy

Wind is 24 mph38 km/h from the Southwest, gusting to 45 mph73 km/h
September 15
5am60°F16°C25 mph41 km/h SouthwestWindy
6am61°F16°C25 mph40 km/h SouthwestWindy
7am63°F17°C25 mph40 km/h SouthwestWindy
8am64°F18°C25 mph40 km/h SouthwestWindy
9am64°F18°C24 mph39 km/h SouthwestDrizzle
10am64°F18°C22 mph35 km/h SouthwestDrizzle
11am64°F18°C23 mph37 km/h SouthwestDrizzle
12pm63°F17°C22 mph35 km/h WestDrizzle
1pm61°F16°C22 mph35 km/h SouthwestWindy
2pm60°F16°C21 mph33 km/h WestDrizzle
3pm59°F15°C20 mph33 km/h WestWindy
4pm58°F14°C20 mph33 km/h WestWindy
DateLowHighWindDayNight
September 1456°F13°C64°F18°C23 mph37 km/h from SouthwestWindyWindy
September 1553°F12°C65°F18°C16 mph26 km/h from WestWindyRain
September 1654°F12°C68°F20°C15 mph25 km/h from SouthwestThunderstormsMostly Cloudy
September 1763°F17°C71°F22°C15 mph24 km/h from SouthwestMostly CloudyMostly Cloudy
September 1860°F16°C76°F24°C9 mph15 km/h from SouthwestPartly CloudyPartly Cloudy
September 1960°F15°C72°F22°C8 mph12 km/h from SouthMostly CloudyDrizzle
September 2055°F13°C67°F20°C12 mph19 km/h from SouthwestDrizzleRain

Yes

Low of 53°F12°C, High of 65°F19°C
Wind: 16 mph26 km/h
Precipitation: None

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