Yes
you do need a jacket based on the weather in Chalfont St Giles, Chalfont Saint Giles HP8, UK 1 second ago
Why? Because it's not very warm out.
52°F11°C & Cloudy
Wind is 5 mph8 km/h from the NE, gusting to 12 mph19 km/h
| April 26 | ||||
| 8am | 52°F11°C | 5 mph8 km/h NE | Cloudy | |
| 9am | 53°F12°C | 5 mph8 km/h E | Mostly Cloudy | |
| 10am | 53°F12°C | 4 mph7 km/h E | Cloudy | |
| 11am | 54°F12°C | 4 mph7 km/h E | Cloudy | |
| 12pm | 53°F12°C | 5 mph8 km/h E | Cloudy | |
| 1pm | 53°F12°C | 6 mph9 km/h E | Cloudy | |
| 2pm | 52°F11°C | 6 mph9 km/h E | Cloudy | |
| 3pm | 50°F10°C | 6 mph9 km/h E | Mostly Cloudy | |
| 4pm | 47°F9°C | 6 mph10 km/h E | Mostly Cloudy | |
| 5pm | 45°F7°C | 7 mph11 km/h E | Mostly Cloudy | |
| 6pm | 44°F7°C | 7 mph11 km/h E | Cloudy | |
| 7pm | 43°F6°C | 7 mph12 km/h E | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 25 | 37°F3°C | 54°F12°C | 5 mph8 km/h from NE | Mostly Cloudy | Rain |
| April 26 | 40°F5°C | 52°F11°C | 11 mph18 km/h from NE | Rain | Rain |
| April 27 | 43°F6°C | 52°F11°C | 9 mph15 km/h from NW | Rain | Partly Cloudy |
| April 28 | 38°F3°C | 59°F15°C | 11 mph17 km/h from S | Partly Cloudy | Mostly Clear |
| April 29 | 43°F6°C | 63°F17°C | 10 mph17 km/h from SE | Partly Cloudy | Drizzle |
| April 30 | 50°F10°C | 65°F18°C | 5 mph9 km/h from E | Cloudy | Cloudy |
| May 1 | 48°F9°C | 65°F19°C | 12 mph19 km/h from N | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 40°F5°C, High of 52°F11°CWind: 11 mph18 km/h
Precipitation: 65% rain