Yes

you do need a jacket based on the weather in Tehran (Tajrish), Tehran Province, Iran 1 second ago

Why? Because it's pretty chilly!
52°F11°C & Mostly Cloudy

Wind is 2 mph4 km/h from the South, gusting to 6 mph9 km/h
November 23
9am50°F10°C2 mph3 km/h SouthwestMostly Cloudy
10am48°F9°C3 mph4 km/h NorthMostly Cloudy
11am47°F8°C3 mph4 km/h NorthMostly Cloudy
12pm46°F8°C2 mph4 km/h NorthPartly Cloudy
1pm45°F7°C2 mph4 km/h NorthPartly Cloudy
2pm45°F7°C2 mph4 km/h NorthMostly Cloudy
3pm44°F7°C2 mph4 km/h NorthMostly Clear
4pm43°F6°C3 mph4 km/h NorthMostly Clear
5pm43°F6°C3 mph4 km/h NorthMostly Clear
6pm42°F5°C3 mph5 km/h NorthMostly Clear
7pm41°F5°C3 mph5 km/h NorthClear
8pm41°F5°C3 mph4 km/h NorthClear
DateLowHighWindDayNight
November 2242°F6°C56°F13°C3 mph5 km/h from SouthMostly ClearMostly Clear
November 2340°F5°C56°F13°C3 mph4 km/h from SouthwestMostly ClearMostly Clear
November 2442°F6°C58°F15°C2 mph4 km/h from EastPartly CloudyPartly Cloudy
November 2546°F8°C60°F16°C3 mph4 km/h from SouthMostly ClearMostly Cloudy
November 2645°F7°C55°F13°C3 mph5 km/h from NorthPartly CloudyMostly Clear
November 2737°F3°C52°F11°C4 mph6 km/h from WestClearClear
November 2834°F1°C48°F9°C2 mph4 km/h from SouthwestClearMostly Clear

Yes

Low of 40°F5°C, High of 56°F14°C
Wind: 3 mph4 km/h
Precipitation: None

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