Yes

you do need a jacket based on the weather in Vienna, Austria 1 second ago

Why? Because it's so windy, your hat has officially retired from your head!
64°F18°C & Mostly Cloudy

Wind is 13 mph21 km/h from the Southeast, gusting to 24 mph39 km/h
October 23
10am65°F18°C14 mph22 km/h SoutheastMostly Cloudy
11am67°F20°C14 mph23 km/h SouthMostly Cloudy
12pm69°F21°C14 mph23 km/h SouthMostly Cloudy
1pm70°F21°C15 mph24 km/h SouthMostly Cloudy
2pm69°F21°C14 mph22 km/h SouthMostly Cloudy
3pm67°F20°C12 mph19 km/h SouthMostly Cloudy
4pm63°F17°C16 mph26 km/h SouthwestRain
5pm58°F15°C19 mph31 km/h WestRain
6pm54°F12°C18 mph30 km/h WestRain
7pm52°F11°C15 mph24 km/h WestRain
8pm51°F11°C13 mph21 km/h WestRain
9pm50°F10°C12 mph19 km/h WestRain
DateLowHighWindDayNight
October 2247°F9°C70°F21°C11 mph18 km/h from SouthRainRain
October 2345°F7°C56°F13°C16 mph26 km/h from WestWindyMostly Clear
October 2441°F5°C56°F13°C5 mph8 km/h from WestPartly CloudyMostly Clear
October 2544°F7°C57°F14°C9 mph14 km/h from WestMostly CloudyPartly Cloudy
October 2642°F6°C52°F11°C11 mph18 km/h from WestPartly CloudyMostly Cloudy
October 2743°F6°C52°F11°C14 mph23 km/h from WestPartly CloudyMostly Clear
October 2843°F6°C57°F14°C10 mph17 km/h from WestMostly ClearPartly Cloudy

Yes

Low of 46°F8°C, High of 55°F13°C
Wind: 16 mph26 km/h
Precipitation: None

Support This Page