Yes

you do need a jacket based on the weather in Rockville Centre, NY, USA 1 second ago

Why? Because it's cold enough that makes you wish you had a hat, but you're still too proud to admit it!
48°F9°C & Cloudy

Wind is 6 mph10 km/h from the North, gusting to 16 mph25 km/h
April 6
11am49°F9°C6 mph10 km/h NorthCloudy
12pm50°F10°C6 mph9 km/h NorthCloudy
1pm52°F11°C7 mph11 km/h NorthCloudy
2pm53°F12°C6 mph10 km/h NorthCloudy
3pm54°F12°C7 mph11 km/h NorthwestRain
4pm54°F12°C5 mph9 km/h NorthwestCloudy
5pm54°F12°C7 mph11 km/h NorthwestCloudy
6pm53°F12°C6 mph10 km/h NorthwestCloudy
7pm52°F11°C6 mph9 km/h NorthwestCloudy
8pm51°F11°C6 mph9 km/h NorthwestCloudy
9pm50°F10°C6 mph9 km/h NorthwestCloudy
10pm49°F9°C6 mph10 km/h NorthwestCloudy
DateLowHighWindDayNight
April 644°F6°C54°F12°C6 mph10 km/h from NorthwestRainRain
April 741°F5°C47°F8°C8 mph13 km/h from NortheastDrizzleCloudy
April 833°F1°C44°F6°C19 mph30 km/h from WestWindyMostly Clear
April 930°F-1°C47°F8°C10 mph17 km/h from WestMostly ClearMostly Clear
April 1038°F3°C48°F9°C12 mph19 km/h from SouthRainRain
April 1143°F6°C52°F11°C9 mph14 km/h from SouthRainRain
April 1246°F8°C52°F11°C8 mph13 km/h from NortheastRainRain

Yes

Low of 41°F5°C, High of 47°F9°C
Wind: 8 mph13 km/h
Precipitation: 81% rain

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