Yes

you do need a jacket based on the weather in Siberia, Russia 1 second ago

Why? Because the air feels like the cozy middle ground between summer and winter!
53°F12°C & Mostly Clear

Wind is 5 mph8 km/h from the Southeast, gusting to 12 mph20 km/h
August 12
11am52°F11°C5 mph9 km/h SoutheastMostly Clear
12pm51°F10°C5 mph9 km/h SoutheastMostly Clear
1pm50°F10°C5 mph8 km/h SoutheastMostly Clear
2pm49°F9°C5 mph8 km/h SoutheastMostly Clear
3pm48°F9°C5 mph8 km/h SoutheastMostly Clear
4pm47°F8°C5 mph8 km/h SoutheastMostly Clear
5pm47°F8°C5 mph8 km/h SoutheastMostly Clear
6pm47°F8°C5 mph8 km/h SoutheastMostly Clear
7pm49°F9°C5 mph8 km/h SoutheastMostly Clear
8pm52°F11°C6 mph9 km/h SoutheastClear
9pm56°F13°C6 mph10 km/h SoutheastClear
10pm59°F15°C7 mph11 km/h SoutheastClear
DateLowHighWindDayNight
August 1150°F10°C61°F16°C8 mph13 km/h from SouthDrizzleMostly Clear
August 1247°F8°C68°F20°C6 mph10 km/h from SoutheastMostly ClearPartly Cloudy
August 1350°F10°C65°F19°C6 mph9 km/h from EastDrizzlePartly Cloudy
August 1450°F10°C69°F20°C7 mph11 km/h from EastPartly CloudyMostly Cloudy
August 1551°F11°C68°F20°C7 mph11 km/h from EastMostly CloudyRain
August 1654°F12°C68°F20°C6 mph10 km/h from EastRainDrizzle
August 1753°F12°C67°F19°C5 mph8 km/h from EastMostly CloudyMostly Cloudy

Yes

Low of 46°F8°C, High of 68°F20°C
Wind: 6 mph10 km/h
Precipitation: None

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