Yes

you do need a jacket based on the weather in Riga, Latvia 1 second ago

Why? Because sorry, it's too cool for just a hoodie!
58°F14°C & Cloudy

Wind is 6 mph10 km/h from the South, gusting to 13 mph21 km/h
August 7
9pm58°F14°C6 mph10 km/h SouthCloudy
10pm57°F14°C6 mph10 km/h SouthCloudy
11pm57°F14°C6 mph10 km/h SouthCloudy
August 8
12am58°F14°C6 mph10 km/h SouthCloudy
1am59°F15°C7 mph11 km/h SouthCloudy
2am61°F16°C7 mph11 km/h SouthCloudy
3am62°F17°C7 mph11 km/h SouthCloudy
4am64°F18°C7 mph11 km/h SouthMostly Cloudy
5am66°F19°C7 mph12 km/h SouthMostly Cloudy
6am67°F19°C7 mph12 km/h SouthCloudy
7am67°F20°C7 mph11 km/h SouthCloudy
8am68°F20°C6 mph10 km/h SouthRain
DateLowHighWindDayNight
August 757°F14°C68°F20°C6 mph10 km/h from SouthRainDrizzle
August 856°F13°C75°F24°C5 mph7 km/h from SouthwestPartly CloudyPartly Cloudy
August 957°F14°C69°F21°C5 mph9 km/h from SouthwestRainMostly Clear
August 1058°F15°C71°F22°C11 mph18 km/h from NorthwestMostly ClearMostly Cloudy
August 1157°F14°C71°F22°C8 mph13 km/h from SouthwestMostly CloudyMostly Clear
August 1258°F14°C71°F22°C9 mph15 km/h from NorthwestPartly CloudyPartly Cloudy
August 1359°F15°C74°F23°C6 mph10 km/h from NorthwestMostly ClearPartly Cloudy

Yes

Low of 56°F14°C, High of 75°F24°C
Wind: 5 mph7 km/h
Precipitation: 5% rain

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