Yes
you do need a jacket based on the weather in Merthyr Tydfil CF48, UK 1 second ago
Why? Because it's pretty chilly!
54°F12°C & Mostly Cloudy
Wind is 2 mph3 km/h from the Northwest, gusting to 6 mph9 km/h
| June 18 | ||||
| 2am | 56°F13°C | 2 mph3 km/h Northwest | Cloudy | |
| 3am | 59°F15°C | 2 mph3 km/h Northwest | Cloudy | |
| 4am | 64°F18°C | 1 mph2 km/h Northwest | Mostly Cloudy | |
| 5am | 67°F20°C | 2 mph3 km/h West | Mostly Cloudy | |
| 6am | 70°F21°C | 3 mph4 km/h West | Mostly Clear | |
| 7am | 73°F23°C | 3 mph5 km/h West | Clear | |
| 8am | 75°F24°C | 4 mph7 km/h West | Clear | |
| 9am | 76°F25°C | 5 mph8 km/h West | Clear | |
| 10am | 77°F25°C | 6 mph10 km/h West | Clear | |
| 11am | 77°F25°C | 6 mph10 km/h West | Clear | |
| 12pm | 77°F25°C | 6 mph10 km/h West | Clear | |
| 1pm | 76°F24°C | 6 mph10 km/h West | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| June 17 | 54°F12°C | 77°F25°C | 4 mph7 km/h from West | Mostly Clear | Clear |
| June 18 | 57°F14°C | 81°F27°C | 7 mph12 km/h from Southeast | Mostly Clear | Cloudy |
| June 19 | 60°F16°C | 80°F27°C | 10 mph16 km/h from Southeast | Partly Cloudy | Mostly Clear |
| June 20 | 61°F16°C | 79°F26°C | 8 mph12 km/h from Southeast | Mostly Cloudy | Partly Cloudy |
| June 21 | 58°F14°C | 72°F22°C | 11 mph18 km/h from West | Partly Cloudy | Mostly Cloudy |
| June 22 | 55°F13°C | 69°F21°C | 11 mph18 km/h from West | Mostly Cloudy | Mostly Cloudy |
| June 23 | 54°F12°C | 72°F22°C | 8 mph13 km/h from Northwest | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 56°F14°C, High of 81°F27°CWind: 7 mph12 km/h
Precipitation: None