Yes
you do need a jacket based on the weather in Hertfordshire, UK 1 second ago
Why? Because it's cool enough your breath is visible, but your nose isn’t red yet!
50°F10°C & Mostly Cloudy
Wind is 7 mph11 km/h from the East, gusting to 16 mph25 km/h
| March 20 | ||||
| 7pm | 49°F10°C | 8 mph13 km/h East | Cloudy | |
| 8pm | 49°F9°C | 8 mph13 km/h Southeast | Cloudy | |
| 9pm | 48°F9°C | 8 mph13 km/h East | Cloudy | |
| 10pm | 48°F9°C | 8 mph13 km/h East | Cloudy | |
| 11pm | 48°F9°C | 8 mph13 km/h East | Cloudy | |
| March 21 | ||||
| 12am | 47°F9°C | 9 mph14 km/h East | Cloudy | |
| 1am | 47°F8°C | 9 mph14 km/h East | Cloudy | |
| 2am | 47°F8°C | 9 mph14 km/h East | Cloudy | |
| 3am | 48°F9°C | 10 mph16 km/h East | Cloudy | |
| 4am | 50°F10°C | 10 mph16 km/h East | Cloudy | |
| 5am | 53°F12°C | 11 mph17 km/h East | Cloudy | |
| 6am | 56°F13°C | 13 mph20 km/h East | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| March 19 | 42°F6°C | 66°F19°C | 3 mph5 km/h from Southeast | Mostly Clear | Mostly Cloudy |
| March 20 | 47°F8°C | 60°F16°C | 12 mph20 km/h from Southeast | Cloudy | Rain |
| March 21 | 47°F8°C | 56°F13°C | 7 mph12 km/h from South | Drizzle | Drizzle |
| March 22 | 45°F7°C | 56°F13°C | 6 mph10 km/h from North | Rain | Mostly Cloudy |
| March 23 | 43°F6°C | 55°F13°C | 8 mph14 km/h from North | Mostly Cloudy | Mostly Cloudy |
| March 24 | 41°F5°C | 54°F12°C | 6 mph9 km/h from Northwest | Mostly Cloudy | Mostly Cloudy |
| March 25 | 41°F5°C | 54°F12°C | 5 mph8 km/h from North | Partly Cloudy | Partly Cloudy |
Yes
Low of 47°F9°C, High of 60°F16°CWind: 12 mph20 km/h
Precipitation: 22% rain