Yes

you do need a jacket based on the weather in Glossop SK13, UK 1 second ago

Why? Because the drizzle is not enough rain to call it "raining," but enough to make you a little soggy!
64°F18°C & Drizzle

Wind is 1 mph2 km/h from the South, gusting to 3 mph5 km/h
July 17
6pm64°F18°C2 mph3 km/h SoutheastCloudy
7pm62°F17°C2 mph3 km/h SoutheastCloudy
8pm62°F17°C2 mph4 km/h SoutheastCloudy
9pm61°F16°C1 mph2 km/h SouthCloudy
10pm61°F16°C3 mph4 km/h SouthMostly Cloudy
11pm61°F16°C3 mph4 km/h SouthDrizzle
July 18
12am61°F16°C4 mph6 km/h SouthMostly Cloudy
1am61°F16°C3 mph5 km/h SouthMostly Cloudy
2am63°F17°C4 mph6 km/h SouthwestMostly Cloudy
3am64°F18°C4 mph7 km/h SouthwestMostly Cloudy
4am65°F19°C6 mph9 km/h SouthwestMostly Cloudy
5am67°F19°C7 mph11 km/h SouthwestMostly Cloudy
DateLowHighWindDayNight
July 1658°F14°C71°F22°C3 mph5 km/h from SoutheastCloudyCloudy
July 1761°F16°C72°F22°C5 mph8 km/h from SouthwestMostly CloudyDrizzle
July 1861°F16°C70°F21°C4 mph7 km/h from SouthRainDrizzle
July 1957°F14°C69°F20°C8 mph13 km/h from SoutheastRainDrizzle
July 2054°F12°C69°F20°C5 mph7 km/h from SouthwestDrizzleDrizzle
July 2157°F14°C66°F19°C12 mph19 km/h from WestDrizzleMostly Cloudy
July 2255°F13°C68°F20°C7 mph12 km/h from WestDrizzlePartly Cloudy

No

Low of 61°F16°C, High of 73°F23°C
Wind: 5 mph8 km/h
Precipitation: 25% rain

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