Yes

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

Why? Because there are strong winds blowing out there!
69°F20°C & Cloudy

Wind is 13 mph21 km/h from the West, gusting to 27 mph43 km/h
May 24
2pm68°F20°C12 mph20 km/h WestCloudy
3pm65°F19°C11 mph18 km/h SouthwestCloudy
4pm63°F17°C12 mph19 km/h SouthwestCloudy
5pm61°F16°C12 mph19 km/h SouthwestCloudy
6pm60°F15°C12 mph19 km/h SouthwestCloudy
7pm59°F15°C13 mph20 km/h SouthwestCloudy
8pm58°F15°C12 mph20 km/h SouthwestCloudy
9pm58°F14°C13 mph21 km/h SouthwestDrizzle
10pm57°F14°C13 mph22 km/h SouthwestCloudy
11pm57°F14°C14 mph22 km/h SouthwestCloudy
May 25
12am57°F14°C14 mph23 km/h SouthwestMostly Cloudy
1am58°F14°C14 mph22 km/h SouthwestMostly Cloudy
DateLowHighWindDayNight
May 2354°F12°C70°F21°C10 mph16 km/h from WestRainDrizzle
May 2454°F12°C67°F20°C15 mph25 km/h from WestWindyPartly Cloudy
May 2550°F10°C64°F18°C14 mph22 km/h from SouthwestMostly CloudyCloudy
May 2654°F12°C68°F20°C13 mph21 km/h from WestMostly CloudyDrizzle
May 2755°F13°C68°F20°C16 mph26 km/h from WestDrizzleMostly Cloudy
May 2852°F11°C66°F19°C14 mph23 km/h from WestMostly CloudyMostly Cloudy
May 2954°F12°C74°F23°C9 mph15 km/h from WestMostly CloudyPartly Cloudy

Yes

Low of 54°F12°C, High of 67°F20°C
Wind: 15 mph25 km/h
Precipitation: 9% rain

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