Yes
you do need a jacket based on the weather in Gaithersburg, MD, USA 1 second ago
Why? Because it's cool. Pleasantly cool, but cool!
56°F13°C & Mostly Cloudy
Wind is 2 mph3 km/h from the West, gusting to 4 mph7 km/h
| October 22 | ||||
| 4am | 55°F13°C | 3 mph5 km/h West | Mostly Cloudy | |
| 5am | 54°F12°C | 5 mph8 km/h West | Mostly Cloudy | |
| 6am | 53°F12°C | 4 mph7 km/h West | Partly Cloudy | |
| 7am | 52°F11°C | 4 mph7 km/h Southwest | Partly Cloudy | |
| 8am | 51°F11°C | 5 mph9 km/h West | Mostly Clear | |
| 9am | 50°F10°C | 6 mph10 km/h West | Mostly Clear | |
| 10am | 49°F9°C | 7 mph11 km/h West | Clear | |
| 11am | 48°F9°C | 6 mph10 km/h West | Clear | |
| 12pm | 48°F9°C | 6 mph9 km/h West | Clear | |
| 1pm | 51°F10°C | 7 mph11 km/h West | Clear | |
| 2pm | 54°F12°C | 9 mph15 km/h West | Clear | |
| 3pm | 56°F13°C | 12 mph20 km/h West | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| October 21 | 39°F4°C | 71°F22°C | 3 mph4 km/h from South | Clear | Drizzle |
| October 22 | 46°F8°C | 59°F15°C | 10 mph17 km/h from West | Partly Cloudy | Mostly Clear |
| October 23 | 42°F6°C | 57°F14°C | 10 mph17 km/h from West | Mostly Clear | Clear |
| October 24 | 39°F4°C | 57°F14°C | 8 mph13 km/h from Northwest | Mostly Clear | Mostly Clear |
| October 25 | 38°F3°C | 58°F14°C | 5 mph8 km/h from Northwest | Partly Cloudy | Partly Cloudy |
| October 26 | 40°F4°C | 58°F14°C | 2 mph4 km/h from Southeast | Partly Cloudy | Mostly Cloudy |
| October 27 | 43°F6°C | 59°F15°C | 5 mph8 km/h from East | Partly Cloudy | Partly Cloudy |
Yes
Low of 46°F8°C, High of 59°F15°CWind: 10 mph17 km/h
Precipitation: None