No

you don't need a jacket based on the weather in Rickmansworth WD3, UK 1 second ago

66°F19°C & Mostly Clear

Wind is 8 mph13 km/h from the West, gusting to 15 mph24 km/h
September 5
8am67°F19°C8 mph13 km/h WestMostly Clear
9am68°F20°C8 mph13 km/h WestPartly Cloudy
10am68°F20°C8 mph13 km/h WestMostly Cloudy
11am68°F20°C7 mph12 km/h WestPartly Cloudy
12pm68°F20°C7 mph11 km/h WestPartly Cloudy
1pm67°F19°C5 mph9 km/h SouthwestMostly Cloudy
2pm65°F18°C5 mph7 km/h SouthwestMostly Cloudy
3pm63°F17°C4 mph7 km/h SouthwestMostly Cloudy
4pm61°F16°C4 mph7 km/h SouthwestMostly Cloudy
5pm59°F15°C4 mph7 km/h SouthwestMostly Cloudy
6pm58°F15°C4 mph6 km/h SouthwestMostly Cloudy
7pm57°F14°C3 mph5 km/h SouthMostly Cloudy
DateLowHighWindDayNight
September 450°F10°C68°F20°C6 mph10 km/h from WestPartly CloudyMostly Cloudy
September 553°F12°C70°F21°C10 mph16 km/h from SoutheastCloudyMostly Cloudy
September 660°F16°C73°F23°C11 mph18 km/h from SouthCloudyMostly Clear
September 755°F13°C68°F20°C11 mph18 km/h from SouthwestMostly ClearMostly Clear
September 851°F11°C67°F19°C10 mph15 km/h from SouthMostly CloudyMostly Cloudy
September 956°F13°C66°F19°C11 mph18 km/h from SouthwestDrizzleRain
September 1055°F13°C64°F18°C12 mph20 km/h from SouthwestRainPartly Cloudy

Yes

Low of 53°F12°C, High of 71°F22°C
Wind: 10 mph16 km/h
Precipitation: None

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