Yes

you do need a jacket based on the weather in Mexico City, CDMX, Mexico 36 seconds ago

Why? Because it's pretty chilly!
58°F14°C & Cloudy

Wind is 2 mph3 km/h from the Southeast, gusting to 4 mph6 km/h
August 23
6am57°F14°C2 mph3 km/h SouthCloudy
7am57°F14°C1 mph2 km/h SouthMostly Cloudy
8am57°F14°C1 mph2 km/h SouthwestMostly Cloudy
9am58°F14°C1 mph2 km/h SouthMostly Cloudy
10am59°F15°C2 mph2 km/h EastMostly Cloudy
11am61°F16°C2 mph3 km/h EastMostly Cloudy
12pm64°F18°C2 mph3 km/h NortheastMostly Cloudy
1pm67°F20°C2 mph3 km/h NortheastPartly Cloudy
2pm70°F21°C2 mph4 km/h NortheastPartly Cloudy
3pm72°F22°C3 mph6 km/h NortheastPartly Cloudy
4pm73°F23°C3 mph5 km/h NortheastPartly Cloudy
5pm73°F23°C3 mph5 km/h EastMostly Cloudy
DateLowHighWindDayNight
August 2357°F14°C73°F23°C3 mph5 km/h from NortheastRainRain
August 2457°F14°C74°F23°C3 mph5 km/h from NortheastRainRain
August 2557°F14°C74°F24°C3 mph5 km/h from NortheastPartly CloudyDrizzle
August 2656°F14°C75°F24°C4 mph6 km/h from NortheastPartly CloudyRain
August 2756°F14°C74°F23°C3 mph5 km/h from NortheastMostly CloudyRain
August 2857°F14°C74°F23°C3 mph5 km/h from NortheastPartly CloudyMostly Cloudy
August 2956°F14°C73°F23°C4 mph6 km/h from NorthPartly CloudyMostly Cloudy

Yes

Low of 57°F14°C, High of 73°F23°C
Wind: 3 mph5 km/h
Precipitation: 36% rain

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