Yes

you do need a jacket based on the weather in Fenny Stratford, Bletchley, Milton Keynes MK2 2NB, UK 1 second ago

Why? Because it's not very warm out.
51°F11°C & Mostly Cloudy

Wind is 11 mph18 km/h from the NW, gusting to 22 mph36 km/h
April 16
12pm51°F10°C10 mph16 km/h NDrizzle
1pm49°F9°C11 mph17 km/h NMostly Cloudy
2pm48°F9°C8 mph14 km/h NMostly Cloudy
3pm45°F7°C8 mph12 km/h NMostly Cloudy
4pm43°F6°C6 mph10 km/h NWMostly Cloudy
5pm42°F6°C6 mph9 km/h NWMostly Cloudy
6pm42°F5°C6 mph9 km/h NWPartly Cloudy
7pm41°F5°C6 mph10 km/h WMostly Clear
8pm40°F5°C8 mph13 km/h WMostly Clear
9pm39°F4°C9 mph15 km/h WMostly Clear
10pm39°F4°C11 mph17 km/h NWMostly Clear
11pm39°F4°C11 mph18 km/h NWMostly Clear
DateLowHighWindDayNight
April 1541°F5°C53°F12°C13 mph21 km/h from NWDrizzlePartly Cloudy
April 1638°F3°C50°F10°C13 mph21 km/h from NWMostly CloudyPartly Cloudy
April 1737°F3°C53°F12°C8 mph12 km/h from WMostly CloudyCloudy
April 1842°F5°C55°F13°C14 mph23 km/h from NWMostly CloudyMostly Clear
April 1936°F2°C55°F13°C8 mph12 km/h from NPartly CloudyMostly Clear
April 2038°F3°C58°F14°C5 mph8 km/h from NMostly CloudyCloudy
April 2145°F7°C57°F14°C7 mph11 km/h from NCloudyMostly Cloudy

Yes

Low of 37°F3°C, High of 50°F10°C
Wind: 13 mph21 km/h
Precipitation: None

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