Yes
you do need a jacket based on the weather in Horsham, UK 1 second ago
Why? Because just cool enough for a jacket, but not warm enough to ditch it!
55°F13°C & Partly Cloudy
Wind is 5 mph8 km/h from the Southwest, gusting to 11 mph17 km/h
| September 1 | ||||
| 11pm | 55°F13°C | 5 mph8 km/h Southwest | Drizzle | |
| September 2 | ||||
| 12am | 55°F13°C | 5 mph8 km/h South | Partly Cloudy | |
| 1am | 55°F13°C | 5 mph8 km/h South | Mostly Clear | |
| 2am | 56°F13°C | 5 mph9 km/h South | Partly Cloudy | |
| 3am | 58°F14°C | 7 mph11 km/h South | Cloudy | |
| 4am | 60°F15°C | 10 mph16 km/h South | Drizzle | |
| 5am | 60°F16°C | 12 mph19 km/h South | Drizzle | |
| 6am | 62°F16°C | 13 mph21 km/h South | Drizzle | |
| 7am | 62°F16°C | 14 mph22 km/h South | Rain | |
| 8am | 62°F17°C | 14 mph22 km/h South | Drizzle | |
| 9am | 63°F17°C | 14 mph23 km/h South | Drizzle | |
| 10am | 64°F18°C | 14 mph23 km/h South | Rain | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 1 | 55°F13°C | 64°F18°C | 12 mph19 km/h from South | Rain | Rain |
| September 2 | 59°F15°C | 67°F19°C | 21 mph33 km/h from Southwest | Rain | Drizzle |
| September 3 | 55°F13°C | 67°F19°C | 13 mph21 km/h from Southwest | Rain | Mostly Clear |
| September 4 | 51°F11°C | 69°F21°C | 8 mph13 km/h from Southwest | Mostly Clear | Partly Cloudy |
| September 5 | 52°F11°C | 69°F21°C | 11 mph17 km/h from Southeast | Mostly Cloudy | Cloudy |
| September 6 | 61°F16°C | 71°F22°C | 13 mph21 km/h from South | Mostly Cloudy | Mostly Cloudy |
| September 7 | 56°F13°C | 68°F20°C | 12 mph19 km/h from Southwest | Partly Cloudy | Partly Cloudy |
Yes
Low of 58°F15°C, High of 67°F20°CWind: 21 mph33 km/h
Precipitation: 70% rain