Yes
you do need a jacket based on the weather in Rockville, MD, USA 1 second ago
Why? Because it's not very warm out!
55°F13°C & Clear
Wind is 3 mph5 km/h from the North, gusting to 4 mph7 km/h
| September 9 | ||||
| 1am | 54°F12°C | 4 mph6 km/h North | Clear | |
| 2am | 53°F12°C | 4 mph7 km/h North | Clear | |
| 3am | 52°F11°C | 4 mph7 km/h North | Clear | |
| 4am | 52°F11°C | 4 mph7 km/h North | Clear | |
| 5am | 51°F11°C | 4 mph6 km/h North | Clear | |
| 6am | 51°F10°C | 4 mph6 km/h North | Clear | |
| 7am | 51°F10°C | 4 mph6 km/h North | Clear | |
| 8am | 55°F13°C | 4 mph6 km/h North | Clear | |
| 9am | 61°F16°C | 5 mph8 km/h Northeast | Clear | |
| 10am | 66°F19°C | 7 mph11 km/h Northeast | Clear | |
| 11am | 70°F21°C | 8 mph13 km/h Northeast | Clear | |
| 12pm | 72°F22°C | 9 mph14 km/h Northeast | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 9 | 50°F10°C | 76°F24°C | 7 mph12 km/h from Northeast | Mostly Clear | Partly Cloudy |
| September 10 | 56°F13°C | 74°F24°C | 6 mph9 km/h from North | Mostly Cloudy | Mostly Clear |
| September 11 | 56°F13°C | 80°F27°C | 5 mph9 km/h from North | Mostly Clear | Mostly Clear |
| September 12 | 57°F14°C | 79°F26°C | 6 mph9 km/h from Northeast | Mostly Clear | Mostly Clear |
| September 13 | 59°F15°C | 78°F26°C | 4 mph7 km/h from East | Partly Cloudy | Mostly Clear |
| September 14 | 57°F14°C | 79°F26°C | 3 mph6 km/h from Southeast | Partly Cloudy | Mostly Clear |
| September 15 | 61°F16°C | 80°F26°C | 6 mph10 km/h from Northeast | Partly Cloudy | Clear |
Yes
Low of 56°F14°C, High of 74°F24°CWind: 6 mph9 km/h
Precipitation: 14% rain