Yes
you do need a jacket based on the weather in Hertford, UK 1 second ago
Why? Because it's quite chilly!
35°F2°C & Mostly Cloudy
Wind is 3 mph5 km/h from the South, gusting to 7 mph11 km/h
| January 17 | ||||
| 10pm | 35°F2°C | 3 mph5 km/h South | Mostly Cloudy | |
| 11pm | 34°F1°C | 3 mph5 km/h South | Mostly Cloudy | |
| January 18 | ||||
| 12am | 34°F1°C | 3 mph5 km/h South | Mostly Cloudy | |
| 1am | 34°F1°C | 2 mph4 km/h South | Mostly Cloudy | |
| 2am | 34°F1°C | 2 mph4 km/h South | Mostly Cloudy | |
| 3am | 33°F1°C | 3 mph5 km/h Southeast | Mostly Cloudy | |
| 4am | 34°F1°C | 3 mph5 km/h Southeast | Mostly Cloudy | |
| 5am | 35°F2°C | 3 mph5 km/h South | Mostly Cloudy | |
| 6am | 36°F2°C | 4 mph6 km/h Southeast | Mostly Cloudy | |
| 7am | 37°F3°C | 3 mph6 km/h Southeast | Mostly Cloudy | |
| 8am | 38°F3°C | 3 mph5 km/h Southeast | Mostly Cloudy | |
| 9am | 39°F4°C | 3 mph5 km/h Southeast | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| January 17 | 33°F1°C | 39°F4°C | 4 mph6 km/h from Southeast | Mostly Cloudy | Mostly Cloudy |
| January 18 | 34°F1°C | 38°F3°C | 5 mph8 km/h from South | Cloudy | Mostly Cloudy |
| January 19 | 33°F0°C | 41°F5°C | 4 mph7 km/h from Southwest | Cloudy | Cloudy |
| January 20 | 35°F1°C | 42°F5°C | 4 mph6 km/h from South | Mostly Cloudy | Cloudy |
| January 21 | 34°F1°C | 41°F5°C | 6 mph9 km/h from East | Cloudy | Cloudy |
| January 22 | 37°F3°C | 43°F6°C | 6 mph10 km/h from East | Mostly Cloudy | Mostly Cloudy |
| January 23 | 36°F2°C | 47°F8°C | 14 mph22 km/h from South | Drizzle | Drizzle |
Yes
Low of 34°F1°C, High of 38°F4°CWind: 5 mph8 km/h
Precipitation: None