Yes
you do need a jacket based on the weather in Harrow, UK 1 second ago
Why? Because it's pretty chilly and it's really really huffing out there!
58°F14°C & Windy
Wind is 20 mph32 km/h from the Southwest, gusting to 40 mph64 km/h
| September 15 | ||||
| 5am | 59°F15°C | 21 mph34 km/h Southwest | Windy | |
| 6am | 60°F16°C | 21 mph34 km/h Southwest | Windy | |
| 7am | 62°F17°C | 21 mph34 km/h Southwest | Drizzle | |
| 8am | 63°F17°C | 21 mph34 km/h Southwest | Drizzle | |
| 9am | 63°F17°C | 21 mph34 km/h Southwest | Drizzle | |
| 10am | 63°F17°C | 21 mph34 km/h Southwest | Drizzle | |
| 11am | 63°F17°C | 21 mph34 km/h Southwest | Drizzle | |
| 12pm | 62°F17°C | 19 mph31 km/h West | Drizzle | |
| 1pm | 61°F16°C | 19 mph30 km/h West | Windy | |
| 2pm | 60°F15°C | 18 mph29 km/h West | Windy | |
| 3pm | 58°F15°C | 18 mph28 km/h West | Windy | |
| 4pm | 58°F14°C | 17 mph28 km/h West | Windy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 14 | 56°F13°C | 63°F17°C | 20 mph32 km/h from Southwest | Drizzle | Mostly Clear |
| September 15 | 53°F12°C | 64°F18°C | 13 mph21 km/h from West | Mostly Cloudy | Drizzle |
| September 16 | 55°F13°C | 67°F20°C | 13 mph22 km/h from Southwest | Thunderstorms | Cloudy |
| September 17 | 62°F17°C | 70°F21°C | 12 mph20 km/h from Southwest | Mostly Cloudy | Mostly Cloudy |
| September 18 | 61°F16°C | 74°F23°C | 8 mph13 km/h from Southwest | Mostly Cloudy | Partly Cloudy |
| September 19 | 59°F15°C | 71°F22°C | 7 mph11 km/h from South | Drizzle | Drizzle |
| September 20 | 55°F13°C | 67°F19°C | 10 mph16 km/h from Southwest | Drizzle | Drizzle |
Yes
Low of 53°F12°C, High of 64°F18°CWind: 13 mph21 km/h
Precipitation: None