Yes

you do need a jacket based on the weather in Northampton, UK 16 minutes ago

Why? Because it's cold enough that makes you wish you had a hat, but you're still too proud to admit it!
46°F8°C & Mostly Cloudy

Wind is 8 mph13 km/h from the Northeast, gusting to 14 mph22 km/h
April 4
1am46°F8°C8 mph13 km/h NortheastCloudy
2am46°F8°C9 mph14 km/h NortheastMostly Cloudy
3am47°F9°C9 mph15 km/h NortheastMostly Cloudy
4am51°F10°C11 mph17 km/h NortheastMostly Cloudy
5am54°F12°C12 mph19 km/h NortheastMostly Cloudy
6am58°F14°C12 mph20 km/h NortheastMostly Cloudy
7am61°F16°C13 mph20 km/h NortheastMostly Cloudy
8am64°F18°C14 mph22 km/h EastPartly Cloudy
9am66°F19°C15 mph24 km/h EastPartly Cloudy
10am67°F19°C15 mph24 km/h EastMostly Cloudy
11am67°F19°C15 mph24 km/h EastPartly Cloudy
12pm66°F19°C15 mph25 km/h NortheastWindy
DateLowHighWindDayNight
April 344°F7°C67°F19°C13 mph21 km/h from NortheastPartly CloudyMostly Clear
April 442°F5°C61°F16°C15 mph25 km/h from NortheastWindyClear
April 538°F4°C58°F15°C13 mph20 km/h from EastClearClear
April 634°F1°C59°F15°C6 mph10 km/h from EastClearClear
April 735°F2°C58°F15°C5 mph8 km/h from EastMostly ClearMostly Clear
April 837°F3°C54°F12°C10 mph16 km/h from NortheastPartly CloudyPartly Cloudy
April 936°F2°C60°F15°C5 mph9 km/h from NorthMostly ClearMostly Clear

Yes

Low of 42°F6°C, High of 61°F16°C
Wind: 15 mph25 km/h
Precipitation: None

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