Yes

you do need a jacket based on the weather in Chesterfield, UK 16 minutes ago

Why? Because it's on the windy side!
65°F19°C & Mostly Cloudy

Wind is 11 mph18 km/h from the Southwest, gusting to 22 mph35 km/h
September 18
8am67°F20°C13 mph21 km/h SouthwestCloudy
9am69°F21°C16 mph25 km/h SouthwestWindy
10am70°F21°C18 mph29 km/h SouthwestWindy
11am70°F21°C16 mph26 km/h SouthwestWindy
12pm69°F21°C15 mph25 km/h SouthwestWindy
1pm68°F20°C15 mph25 km/h SouthwestWindy
2pm66°F19°C13 mph21 km/h SouthwestMostly Cloudy
3pm65°F18°C12 mph19 km/h SouthwestPartly Cloudy
4pm64°F18°C12 mph19 km/h SouthwestMostly Cloudy
5pm64°F18°C11 mph18 km/h SouthwestMostly Cloudy
6pm63°F17°C10 mph17 km/h SouthwestMostly Cloudy
7pm63°F17°C11 mph17 km/h SouthwestMostly Cloudy
DateLowHighWindDayNight
September 1756°F13°C70°F21°C12 mph20 km/h from SouthwestMostly CloudyMostly Cloudy
September 1861°F16°C71°F22°C12 mph19 km/h from SouthwestMostly CloudyMostly Cloudy
September 1954°F12°C66°F19°C8 mph13 km/h from SouthDrizzleDrizzle
September 2047°F8°C55°F13°C12 mph20 km/h from WestDrizzleDrizzle
September 2142°F5°C56°F14°C10 mph16 km/h from NorthMostly ClearMostly Clear
September 2239°F4°C58°F14°C6 mph10 km/h from NorthPartly CloudyPartly Cloudy
September 2340°F4°C59°F15°C5 mph8 km/h from NortheastPartly CloudyPartly Cloudy

No

Low of 61°F16°C, High of 71°F22°C
Wind: 12 mph19 km/h
Precipitation: None

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