Yes

you do need a jacket based on the weather in Stowmarket IP14, UK 1 second ago

Why? Because just cool enough for a jacket, but not warm enough to ditch it!
55°F13°C & Mostly Clear

Wind is 7 mph12 km/h from the Southwest, gusting to 14 mph22 km/h
July 15
2am58°F14°C9 mph14 km/h SouthwestPartly Cloudy
3am61°F16°C12 mph19 km/h SouthwestPartly Cloudy
4am64°F18°C13 mph21 km/h SouthwestPartly Cloudy
5am67°F20°C15 mph24 km/h SouthwestPartly Cloudy
6am69°F21°C15 mph25 km/h SouthwestWindy
7am70°F21°C16 mph25 km/h SouthwestWindy
8am72°F22°C16 mph25 km/h SouthwestWindy
9am72°F22°C17 mph27 km/h SouthwestWindy
10am69°F21°C16 mph26 km/h SouthwestWindy
11am69°F20°C15 mph24 km/h SouthwestCloudy
12pm67°F19°C13 mph21 km/h SouthwestCloudy
1pm64°F18°C11 mph18 km/h SouthwestDrizzle
DateLowHighWindDayNight
July 1454°F12°C72°F22°C14 mph23 km/h from SouthwestRainRain
July 1557°F14°C73°F23°C13 mph20 km/h from NorthwestMostly CloudyPartly Cloudy
July 1654°F12°C78°F25°C6 mph9 km/h from SouthMostly CloudyMostly Cloudy
July 1762°F17°C81°F27°C8 mph13 km/h from SouthPartly CloudyRain
July 1862°F17°C74°F23°C9 mph14 km/h from SoutheastDrizzleDrizzle
July 1959°F15°C72°F22°C10 mph17 km/h from SouthDrizzleDrizzle
July 2058°F14°C70°F21°C7 mph11 km/h from SouthwestDrizzlePartly Cloudy

Yes

Low of 56°F14°C, High of 73°F23°C
Wind: 13 mph20 km/h
Precipitation: 17% rain

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