Yes

you do need a jacket based on the weather in Fenchurch St, London EC3M 4BY, UK 1 second ago

Why? Because it's cool enough your breath is visible, but your nose isn’t red yet!
42°F5°C & Cloudy

Wind is 7 mph11 km/h from the Southwest, gusting to 16 mph25 km/h
January 13
10am41°F5°C7 mph11 km/h SouthwestCloudy
11am40°F5°C6 mph10 km/h SouthwestCloudy
12pm39°F4°C6 mph9 km/h SouthwestCloudy
1pm38°F3°C6 mph10 km/h SouthwestCloudy
2pm38°F3°C6 mph9 km/h SouthwestCloudy
3pm37°F3°C6 mph10 km/h SouthwestCloudy
4pm37°F3°C6 mph10 km/h SouthwestCloudy
5pm36°F2°C6 mph9 km/h SouthwestCloudy
6pm37°F3°C6 mph10 km/h SouthwestCloudy
7pm36°F2°C6 mph9 km/h SouthwestCloudy
8pm37°F3°C6 mph9 km/h SouthwestCloudy
9pm37°F3°C6 mph10 km/h SouthwestCloudy
DateLowHighWindDayNight
January 1236°F2°C43°F6°C5 mph8 km/h from SouthwestMostly CloudyCloudy
January 1336°F2°C46°F8°C5 mph8 km/h from SouthwestMostly CloudyCloudy
January 1442°F6°C49°F9°C3 mph4 km/h from SouthwestMostly CloudyMostly Cloudy
January 1539°F4°C47°F8°C4 mph6 km/h from SouthMostly CloudyPartly Cloudy
January 1635°F2°C43°F6°C4 mph7 km/h from SouthMostly CloudyPartly Cloudy
January 1733°F0°C41°F5°C4 mph6 km/h from SoutheastMostly CloudyMostly Cloudy
January 1832°F-0°C40°F5°C3 mph6 km/h from SouthMostly CloudyPartly Cloudy

Yes

Low of 37°F3°C, High of 46°F8°C
Wind: 5 mph8 km/h
Precipitation: None

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