Yes
you do need a jacket based on the weather in Henley-on-Thames RG9, UK 1 second ago
Why? Because it's so windy, your hat will probably launch into orbit!
68°F20°C & Mostly Cloudy
Wind is 14 mph23 km/h from the Southwest, gusting to 25 mph41 km/h
| September 18 | ||||
| 1pm | 67°F20°C | 13 mph22 km/h Southwest | Mostly Cloudy | |
| 2pm | 66°F19°C | 13 mph20 km/h Southwest | Mostly Cloudy | |
| 3pm | 64°F18°C | 11 mph18 km/h Southwest | Mostly Cloudy | |
| 4pm | 63°F17°C | 11 mph17 km/h Southwest | Cloudy | |
| 5pm | 62°F17°C | 10 mph17 km/h Southwest | Cloudy | |
| 6pm | 62°F17°C | 10 mph16 km/h Southwest | Cloudy | |
| 7pm | 62°F17°C | 9 mph15 km/h Southwest | Cloudy | |
| 8pm | 62°F16°C | 9 mph15 km/h Southwest | Cloudy | |
| 9pm | 61°F16°C | 9 mph14 km/h Southwest | Cloudy | |
| 10pm | 61°F16°C | 8 mph13 km/h Southwest | Cloudy | |
| 11pm | 60°F16°C | 7 mph11 km/h Southwest | Cloudy | |
| September 19 | ||||
| 12am | 60°F16°C | 6 mph10 km/h South | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 17 | 62°F17°C | 70°F21°C | 11 mph17 km/h from Southwest | Cloudy | Cloudy |
| September 18 | 58°F15°C | 76°F24°C | 9 mph15 km/h from South | Partly Cloudy | Partly Cloudy |
| September 19 | 54°F12°C | 69°F21°C | 11 mph18 km/h from South | Drizzle | Windy |
| September 20 | 49°F9°C | 58°F15°C | 12 mph20 km/h from Northwest | Drizzle | Mostly Cloudy |
| September 21 | 45°F7°C | 58°F15°C | 13 mph21 km/h from North | Drizzle | Clear |
| September 22 | 41°F5°C | 59°F15°C | 8 mph13 km/h from North | Partly Cloudy | Partly Cloudy |
| September 23 | 45°F7°C | 61°F16°C | 9 mph15 km/h from Northeast | Mostly Cloudy | Partly Cloudy |
Yes
Low of 58°F15°C, High of 76°F25°CWind: 9 mph15 km/h
Precipitation: None