Yes

you do need a jacket based on the weather in Bishop's Stortford CM23, UK 1 second ago

Why? Because sorry, it's too cool for just a hoodie and it's so windy, even the squirrels are holding onto branches for dear life!
52°F11°C & Mostly Cloudy

Wind is 14 mph22 km/h from the Northwest, gusting to 24 mph38 km/h
October 25
12pm52°F11°C14 mph22 km/h NorthwestMostly Cloudy
1pm52°F11°C14 mph23 km/h NorthwestPartly Cloudy
2pm52°F11°C14 mph23 km/h NorthwestPartly Cloudy
3pm51°F10°C16 mph25 km/h NorthwestWindy
4pm49°F10°C15 mph24 km/h NorthwestPartly Cloudy
5pm47°F9°C14 mph23 km/h NorthwestMostly Clear
6pm45°F7°C12 mph19 km/h NorthwestMostly Clear
7pm44°F7°C11 mph18 km/h WestMostly Clear
8pm43°F6°C11 mph18 km/h WestMostly Cloudy
9pm44°F6°C12 mph20 km/h WestRain
10pm43°F6°C11 mph17 km/h WestDrizzle
11pm43°F6°C10 mph17 km/h WestPartly Cloudy
DateLowHighWindDayNight
October 2443°F6°C52°F11°C12 mph20 km/h from NorthwestPartly CloudyMostly Clear
October 2540°F4°C52°F11°C15 mph24 km/h from WestDrizzleDrizzle
October 2745°F7°C55°F13°C16 mph26 km/h from WestWindyMostly Cloudy
October 2846°F8°C58°F15°C15 mph24 km/h from WestMostly CloudyCloudy
October 2947°F8°C57°F14°C10 mph16 km/h from SouthwestDrizzleMostly Cloudy
October 3047°F8°C58°F14°C11 mph17 km/h from SouthDrizzleDrizzle
October 3152°F11°C57°F14°C19 mph31 km/h from SouthwestRainRain

Yes

Low of 39°F4°C, High of 52°F11°C
Wind: 15 mph24 km/h
Precipitation: 57% rain

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