No
you don't need a jacket based on the weather in Herndon, VA 20170, USA 27 minutes ago
63°F17°C & Clear
Wind is 1 mph2 km/h from the Southeast, gusting to 5 mph8 km/h
| March 18 | ||||
| 7pm | 61°F16°C | 3 mph4 km/h Southeast | Clear | |
| 8pm | 57°F14°C | 4 mph7 km/h Southeast | Clear | |
| 9pm | 53°F12°C | 5 mph8 km/h South | Clear | |
| 10pm | 51°F11°C | 5 mph8 km/h South | Clear | |
| 11pm | 49°F10°C | 5 mph8 km/h South | Clear | |
| March 19 | ||||
| 12am | 48°F9°C | 5 mph8 km/h South | Clear | |
| 1am | 46°F8°C | 4 mph6 km/h South | Clear | |
| 2am | 45°F7°C | 3 mph6 km/h South | Clear | |
| 3am | 44°F7°C | 3 mph5 km/h South | Clear | |
| 4am | 44°F6°C | 3 mph5 km/h South | Clear | |
| 5am | 43°F6°C | 3 mph5 km/h Southeast | Clear | |
| 6am | 43°F6°C | 3 mph6 km/h Southeast | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| March 18 | 37°F3°C | 65°F18°C | 3 mph5 km/h from Northwest | Clear | Clear |
| March 19 | 42°F5°C | 69°F21°C | 8 mph13 km/h from Southeast | Partly Cloudy | Mostly Cloudy |
| March 20 | 45°F7°C | 65°F18°C | 10 mph17 km/h from South | Rain | Rain |
| March 21 | 34°F1°C | 53°F12°C | 16 mph25 km/h from Northwest | Windy | Mostly Cloudy |
| March 22 | 38°F3°C | 59°F15°C | 10 mph16 km/h from West | Partly Cloudy | Mostly Clear |
| March 23 | 34°F1°C | 52°F11°C | 6 mph10 km/h from Northwest | Partly Cloudy | Cloudy |
| March 24 | 42°F6°C | 61°F16°C | 12 mph19 km/h from Southwest | Drizzle | Rain |
Yes
Low of 42°F6°C, High of 69°F21°CWind: 8 mph13 km/h
Precipitation: None