Yes
you do need a jacket based on the weather in Caernarfon, UK 1 second ago
Why? Because it's cold. simple as that.
48°F9°C & Mostly Clear
Wind is 4 mph6 km/h from the SW, gusting to 10 mph16 km/h
| April 20 | ||||
| 5am | 49°F9°C | 4 mph7 km/h SW | Mostly Clear | |
| 6am | 51°F10°C | 5 mph8 km/h W | Partly Cloudy | |
| 7am | 52°F11°C | 6 mph9 km/h W | Mostly Cloudy | |
| 8am | 53°F11°C | 6 mph10 km/h W | Mostly Cloudy | |
| 9am | 53°F12°C | 7 mph11 km/h W | Partly Cloudy | |
| 10am | 54°F12°C | 7 mph11 km/h NW | Partly Cloudy | |
| 11am | 54°F12°C | 7 mph12 km/h NW | Partly Cloudy | |
| 12pm | 54°F12°C | 7 mph11 km/h NW | Mostly Clear | |
| 1pm | 53°F12°C | 6 mph10 km/h N | Mostly Clear | |
| 2pm | 52°F11°C | 5 mph9 km/h N | Mostly Clear | |
| 3pm | 49°F9°C | 4 mph7 km/h N | Mostly Clear | |
| 4pm | 46°F8°C | 3 mph5 km/h N | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 19 | 38°F3°C | 54°F12°C | 6 mph9 km/h from W | Partly Cloudy | Mostly Clear |
| April 20 | 40°F4°C | 55°F13°C | 6 mph9 km/h from NE | Partly Cloudy | Mostly Cloudy |
| April 21 | 43°F6°C | 54°F12°C | 10 mph15 km/h from NW | Cloudy | Cloudy |
| April 22 | 43°F6°C | 51°F10°C | 11 mph18 km/h from N | Partly Cloudy | Partly Cloudy |
| April 23 | 41°F5°C | 50°F10°C | 8 mph12 km/h from NW | Mostly Cloudy | Mostly Cloudy |
| April 24 | 40°F5°C | 50°F10°C | 10 mph16 km/h from N | Mostly Cloudy | Mostly Cloudy |
| April 25 | 40°F5°C | 52°F11°C | 7 mph12 km/h from W | Mostly Cloudy | Partly Cloudy |
Yes
Low of 40°F5°C, High of 55°F13°CWind: 6 mph9 km/h
Precipitation: None