Yes
you do need a jacket based on the weather in Jena, Germany 1 second ago
Why? Because it's not very warm out.
55°F13°C & Cloudy
Wind is 3 mph5 km/h from the S, gusting to 5 mph8 km/h
| May 18 | ||||
| 6pm | 55°F13°C | 3 mph6 km/h S | Cloudy | |
| 7pm | 55°F13°C | 4 mph6 km/h S | Cloudy | |
| 8pm | 55°F13°C | 4 mph6 km/h S | Cloudy | |
| 9pm | 54°F12°C | 3 mph6 km/h S | Cloudy | |
| 10pm | 54°F12°C | 4 mph6 km/h S | Cloudy | |
| 11pm | 54°F12°C | 4 mph7 km/h S | Cloudy | |
| May 19 | ||||
| 12am | 54°F12°C | 5 mph7 km/h SW | Cloudy | |
| 1am | 56°F13°C | 5 mph8 km/h SW | Cloudy | |
| 2am | 57°F14°C | 7 mph11 km/h SW | Mostly Cloudy | |
| 3am | 59°F15°C | 8 mph13 km/h SW | Cloudy | |
| 4am | 61°F16°C | 8 mph13 km/h SW | Cloudy | |
| 5am | 62°F17°C | 9 mph14 km/h SW | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| May 17 | 48°F9°C | 67°F19°C | 3 mph4 km/h from NW | Partly Cloudy | Drizzle |
| May 18 | 54°F12°C | 66°F19°C | 8 mph12 km/h from SW | Rain | Partly Cloudy |
| May 19 | 50°F10°C | 74°F23°C | 3 mph5 km/h from SW | Mostly Clear | Partly Cloudy |
| May 20 | 51°F10°C | 75°F24°C | 11 mph18 km/h from E | Cloudy | Drizzle |
| May 21 | 56°F13°C | 70°F21°C | 8 mph13 km/h from SW | Drizzle | Mostly Cloudy |
| May 22 | 53°F11°C | 68°F20°C | 9 mph14 km/h from SW | Mostly Cloudy | Mostly Clear |
| May 23 | 50°F10°C | 70°F21°C | 4 mph7 km/h from NE | Drizzle | Mostly Cloudy |
Yes
Low of 54°F12°C, High of 66°F19°CWind: 8 mph12 km/h
Precipitation: 65% rain