No
you don't need a jacket based on the weather in Herndon, VA 20170, USA 1 second ago
82°F28°C & Cloudy
Wind is 3 mph5 km/h from the Southeast, gusting to 8 mph13 km/h
| August 20 | ||||
| 3pm | 82°F28°C | 4 mph6 km/h Southeast | Mostly Clear | |
| 4pm | 84°F29°C | 5 mph8 km/h East | Partly Cloudy | |
| 5pm | 84°F29°C | 5 mph8 km/h East | Mostly Clear | |
| 6pm | 83°F28°C | 5 mph8 km/h East | Mostly Cloudy | |
| 7pm | 81°F27°C | 5 mph8 km/h Northeast | Mostly Cloudy | |
| 8pm | 78°F26°C | 7 mph11 km/h East | Cloudy | |
| 9pm | 76°F25°C | 8 mph13 km/h East | Cloudy | |
| 10pm | 75°F24°C | 7 mph11 km/h Northeast | Mostly Cloudy | |
| 11pm | 74°F23°C | 7 mph11 km/h Northeast | Mostly Cloudy | |
| August 21 | ||||
| 12am | 73°F23°C | 7 mph11 km/h Northeast | Mostly Cloudy | |
| 1am | 72°F22°C | 7 mph11 km/h Northeast | Mostly Cloudy | |
| 2am | 71°F22°C | 7 mph12 km/h Northeast | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| August 20 | 66°F19°C | 84°F29°C | 3 mph4 km/h from East | Mostly Cloudy | Mostly Cloudy |
| August 21 | 67°F20°C | 75°F24°C | 10 mph16 km/h from North | Cloudy | Mostly Clear |
| August 22 | 63°F17°C | 81°F27°C | 4 mph6 km/h from North | Clear | Clear |
| August 23 | 61°F16°C | 82°F28°C | 8 mph12 km/h from South | Mostly Clear | Mostly Clear |
| August 24 | 67°F19°C | 81°F27°C | 6 mph10 km/h from South | Drizzle | Drizzle |
| August 25 | 63°F17°C | 81°F27°C | 5 mph8 km/h from Northwest | Mostly Clear | Clear |
| August 26 | 59°F15°C | 76°F24°C | 8 mph14 km/h from Northwest | Mostly Clear | Partly Cloudy |
No
Low of 67°F20°C, High of 75°F24°CWind: 10 mph16 km/h
Precipitation: None