Yes

you do need a jacket based on the weather in Mechanicsburg, PA, USA 1 second ago

Why? Because the rain is just enough to ruin your hairstyle but not your mood and it's quite chilly and it's so windy, your hat is now someone else's problem, two cities away!
49°F9°C & Rain

Wind is 11 mph18 km/h from the East, gusting to 28 mph45 km/h
October 30
6am49°F9°C12 mph20 km/h EastRain
7am48°F9°C14 mph22 km/h EastRain
8am49°F9°C12 mph20 km/h EastRain
9am50°F10°C13 mph20 km/h EastRain
10am51°F10°C13 mph20 km/h EastRain
11am52°F11°C15 mph25 km/h EastRain
12pm52°F11°C12 mph20 km/h EastRain
1pm54°F12°C11 mph17 km/h EastRain
2pm56°F13°C10 mph15 km/h EastRain
3pm57°F14°C8 mph13 km/h EastRain
4pm60°F15°C9 mph15 km/h EastRain
5pm62°F17°C9 mph15 km/h SoutheastThunderstorms
DateLowHighWindDayNight
October 3048°F9°C64°F18°C9 mph15 km/h from SoutheastThunderstormsPartly Cloudy
October 3146°F8°C55°F13°C17 mph27 km/h from WestWindyMostly Clear
November 142°F6°C55°F13°C10 mph16 km/h from WestPartly CloudyPartly Cloudy
November 239°F4°C56°F13°C3 mph5 km/h from WestPartly CloudyMostly Clear
November 338°F3°C58°F15°C7 mph10 km/h from SouthwestPartly CloudyMostly Clear
November 442°F5°C56°F14°C11 mph17 km/h from WestMostly ClearClear
November 537°F3°C58°F14°C7 mph11 km/h from WestClearPartly Cloudy

Yes

Low of 46°F8°C, High of 55°F13°C
Wind: 17 mph27 km/h
Precipitation: None

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