Yes

you do need a jacket based on the weather in Spain 1 second ago

Why? Because just cool enough for a jacket, but not warm enough to ditch it!
58°F15°C & Mostly Cloudy

Wind is 1 mph2 km/h from the South, gusting to 5 mph8 km/h
September 27
10pm58°F15°C1 mph2 km/h SouthwestMostly Cloudy
11pm57°F14°C2 mph3 km/h SouthwestCloudy
September 28
12am56°F13°C3 mph5 km/h WestMostly Cloudy
1am57°F14°C2 mph3 km/h SouthwestCloudy
2am57°F14°C2 mph3 km/h SoutheastCloudy
3am58°F14°C3 mph5 km/h SoutheastCloudy
4am61°F16°C3 mph5 km/h SoutheastCloudy
5am63°F17°C4 mph7 km/h SouthCloudy
6am64°F18°C5 mph8 km/h SouthCloudy
7am65°F18°C3 mph5 km/h SouthCloudy
8am65°F18°C3 mph4 km/h NorthwestDrizzle
9am65°F18°C4 mph7 km/h NorthRain
DateLowHighWindDayNight
September 2756°F13°C66°F19°C4 mph6 km/h from WestRainDrizzle
September 2858°F14°C74°F24°C11 mph17 km/h from NortheastDrizzlePartly Cloudy
September 2957°F14°C75°F24°C6 mph9 km/h from NortheastMostly ClearMostly Clear
September 3057°F14°C77°F25°C2 mph4 km/h from SoutheastMostly ClearMostly Clear
October 154°F12°C79°F26°C4 mph6 km/h from EastClearClear
October 254°F12°C78°F25°C3 mph5 km/h from SouthPartly CloudyPartly Cloudy
October 353°F12°C79°F26°C4 mph6 km/h from SouthwestPartly CloudyMostly Cloudy

Yes

Low of 58°F15°C, High of 74°F24°C
Wind: 11 mph17 km/h
Precipitation: 38% rain

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