Yes
you do need a jacket based on the weather in Jena, Germany 1 second ago
Why? Because it's cold. simple as that.
40°F4°C & Mostly Cloudy
Wind is 5 mph8 km/h from the S, gusting to 12 mph19 km/h
| April 25 | ||||
| 6pm | 39°F4°C | 5 mph8 km/h S | Mostly Cloudy | |
| 7pm | 38°F3°C | 5 mph8 km/h S | Mostly Cloudy | |
| 8pm | 38°F3°C | 5 mph9 km/h S | Mostly Cloudy | |
| 9pm | 37°F3°C | 6 mph9 km/h S | Mostly Cloudy | |
| 10pm | 37°F3°C | 6 mph10 km/h S | Mostly Cloudy | |
| 11pm | 36°F2°C | 6 mph10 km/h S | Mostly Cloudy | |
| April 26 | ||||
| 12am | 37°F3°C | 6 mph10 km/h S | Mostly Cloudy | |
| 1am | 39°F4°C | 6 mph10 km/h S | Mostly Cloudy | |
| 2am | 42°F5°C | 7 mph11 km/h S | Partly Cloudy | |
| 3am | 45°F7°C | 8 mph13 km/h S | Mostly Clear | |
| 4am | 49°F9°C | 9 mph14 km/h S | Mostly Clear | |
| 5am | 52°F11°C | 10 mph16 km/h SW | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 24 | 36°F2°C | 49°F9°C | 9 mph15 km/h from W | Cloudy | Mostly Cloudy |
| April 25 | 36°F2°C | 58°F14°C | 9 mph14 km/h from SW | Partly Cloudy | Partly Cloudy |
| April 26 | 41°F5°C | 68°F20°C | 6 mph9 km/h from S | Mostly Clear | Partly Cloudy |
| April 27 | 47°F8°C | 73°F23°C | 7 mph11 km/h from S | Partly Cloudy | Mostly Cloudy |
| April 28 | 49°F10°C | 71°F22°C | 5 mph7 km/h from NE | Partly Cloudy | Partly Cloudy |
| April 29 | 52°F11°C | 78°F26°C | 5 mph8 km/h from E | Mostly Clear | Mostly Clear |
| April 30 | 55°F13°C | 78°F26°C | 7 mph12 km/h from E | Partly Cloudy | Partly Cloudy |
Yes
Low of 37°F3°C, High of 58°F15°CWind: 9 mph14 km/h
Precipitation: 7% rain