Yes
you do need a jacket based on the weather in Herndon, VA 20171, USA 1 second ago
Why? Because it's cool enough your breath is visible, but your nose isn’t red yet and it's fairly windy outside!
49°F9°C & Clear
Wind is 10 mph16 km/h from the South, gusting to 21 mph34 km/h
| February 28 | ||||
| 9pm | 49°F9°C | 11 mph18 km/h South | Clear | |
| 10pm | 48°F9°C | 11 mph18 km/h South | Clear | |
| 11pm | 48°F9°C | 12 mph19 km/h South | Clear | |
| March 1 | ||||
| 12am | 47°F9°C | 12 mph19 km/h South | Clear | |
| 1am | 47°F8°C | 12 mph19 km/h Southwest | Clear | |
| 2am | 47°F8°C | 11 mph18 km/h Southwest | Clear | |
| 3am | 45°F7°C | 10 mph17 km/h Southwest | Mostly Clear | |
| 4am | 45°F7°C | 10 mph17 km/h Southwest | Partly Cloudy | |
| 5am | 45°F7°C | 10 mph16 km/h Southwest | Mostly Clear | |
| 6am | 45°F7°C | 9 mph14 km/h Southwest | Mostly Clear | |
| 7am | 44°F7°C | 8 mph13 km/h Southwest | Mostly Clear | |
| 8am | 46°F8°C | 8 mph13 km/h Southwest | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| February 28 | 41°F5°C | 55°F13°C | 5 mph8 km/h from West | Mostly Clear | Clear |
| March 1 | 25°F-4°C | 54°F12°C | 14 mph22 km/h from Northwest | Partly Cloudy | Clear |
| March 2 | 20°F-6°C | 39°F4°C | 8 mph14 km/h from Northwest | Clear | Mostly Clear |
| March 3 | 23°F-5°C | 42°F5°C | 4 mph6 km/h from Northwest | Clear | Partly Cloudy |
| March 4 | 29°F-2°C | 54°F12°C | 8 mph14 km/h from South | Mostly Cloudy | Cloudy |
| March 5 | 45°F7°C | 63°F17°C | 15 mph25 km/h from South | Rain | Rain |
| March 6 | 36°F2°C | 50°F10°C | 15 mph24 km/h from Northwest | Mostly Cloudy | Partly Cloudy |
Yes
Low of 25°F-4°C, High of 55°F13°CWind: 14 mph22 km/h
Precipitation: None