No
you don't need a jacket based on the weather in Herndon, VA 20170, USA 1 second ago
64°F18°C & Mostly Cloudy
Wind is 4 mph7 km/h from the East, gusting to 9 mph14 km/h
| May 14 | ||||
| 10am | 65°F18°C | 4 mph6 km/h East | Cloudy | |
| 11am | 67°F19°C | 3 mph5 km/h East | Cloudy | |
| 12pm | 68°F20°C | 3 mph4 km/h East | Cloudy | |
| 1pm | 70°F21°C | 2 mph2 km/h East | Mostly Cloudy | |
| 2pm | 72°F22°C | 2 mph4 km/h Southeast | Partly Cloudy | |
| 3pm | 74°F23°C | 3 mph4 km/h Southeast | Partly Cloudy | |
| 4pm | 75°F24°C | 4 mph6 km/h Southeast | Partly Cloudy | |
| 5pm | 74°F24°C | 5 mph8 km/h Southeast | Mostly Cloudy | |
| 6pm | 73°F23°C | 5 mph8 km/h Southeast | Cloudy | |
| 7pm | 71°F22°C | 4 mph7 km/h Southeast | Mostly Cloudy | |
| 8pm | 69°F20°C | 4 mph6 km/h Southeast | Rain | |
| 9pm | 67°F20°C | 4 mph6 km/h Southeast | Rain | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| May 14 | 61°F16°C | 75°F24°C | 4 mph6 km/h from East | Rain | Rain |
| May 15 | 63°F17°C | 78°F26°C | 3 mph4 km/h from West | Drizzle | Partly Cloudy |
| May 16 | 65°F18°C | 84°F29°C | 5 mph8 km/h from Southwest | Thunderstorms | Mostly Cloudy |
| May 17 | 67°F19°C | 83°F28°C | 9 mph14 km/h from West | Partly Cloudy | Mostly Clear |
| May 18 | 61°F16°C | 74°F23°C | 12 mph19 km/h from Northwest | Mostly Clear | Mostly Clear |
| May 19 | 57°F14°C | 71°F22°C | 10 mph16 km/h from Northwest | Partly Cloudy | Partly Cloudy |
| May 20 | 54°F12°C | 71°F22°C | 8 mph13 km/h from Northwest | Partly Cloudy | Partly Cloudy |
No
Low of 64°F18°C, High of 78°F26°CWind: 3 mph4 km/h
Precipitation: 35% rain