No
you don't need a jacket based on the weather in Herndon, VA 20171, USA 1 second ago
74°F23°C & Cloudy
Wind is 4 mph7 km/h from the South, gusting to 12 mph19 km/h
| July 16 | ||||
| 4am | 74°F23°C | 5 mph7 km/h South | Cloudy | |
| 5am | 73°F23°C | 4 mph7 km/h South | Mostly Cloudy | |
| 6am | 73°F23°C | 4 mph6 km/h South | Cloudy | |
| 7am | 74°F23°C | 5 mph9 km/h South | Cloudy | |
| 8am | 76°F24°C | 5 mph9 km/h Southwest | Cloudy | |
| 9am | 78°F25°C | 6 mph9 km/h South | Cloudy | |
| 10am | 80°F27°C | 6 mph10 km/h South | Mostly Cloudy | |
| 11am | 83°F28°C | 7 mph10 km/h South | Mostly Cloudy | |
| 12pm | 85°F29°C | 7 mph12 km/h South | Mostly Cloudy | |
| 1pm | 87°F30°C | 8 mph12 km/h South | Mostly Cloudy | |
| 2pm | 88°F31°C | 8 mph13 km/h Southwest | Mostly Cloudy | |
| 3pm | 88°F31°C | 8 mph14 km/h Southwest | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| July 16 | 73°F23°C | 88°F31°C | 7 mph11 km/h from Southwest | Thunderstorms | Drizzle |
| July 17 | 74°F23°C | 91°F33°C | 8 mph12 km/h from Southwest | Partly Cloudy | Partly Cloudy |
| July 18 | 75°F24°C | 86°F30°C | 5 mph8 km/h from Northwest | Thunderstorms | Thunderstorms |
| July 19 | 72°F22°C | 85°F29°C | 3 mph5 km/h from Southeast | Rain | Drizzle |
| July 20 | 73°F23°C | 87°F30°C | 6 mph9 km/h from Northwest | Drizzle | Partly Cloudy |
| July 21 | 71°F22°C | 85°F30°C | 4 mph6 km/h from North | Partly Cloudy | Drizzle |
| July 22 | 71°F22°C | 88°F31°C | 5 mph8 km/h from South | Drizzle | Mostly Clear |
No
Low of 74°F24°C, High of 91°F33°CWind: 8 mph12 km/h
Precipitation: 27% rain