Yes

you do need a jacket based on the weather in (Richmond Hill), New York, United States 1 second ago

Why? Because the drizzle is not enough rain to call it "raining," but enough to make you a little soggy and the cold's there, but it's just a reminder, not an invasion!
40°F4°C & Drizzle

Wind is 7 mph12 km/h from the Northeast, gusting to 15 mph24 km/h
April 7
10am41°F5°C8 mph12 km/h NortheastDrizzle
11am42°F5°C7 mph11 km/h NortheastDrizzle
12pm43°F6°C7 mph11 km/h NortheastDrizzle
1pm44°F6°C5 mph8 km/h NortheastRain
2pm44°F7°C6 mph10 km/h EastRain
3pm44°F7°C5 mph8 km/h NortheastDrizzle
4pm44°F7°C5 mph8 km/h NortheastDrizzle
5pm44°F7°C6 mph10 km/h NortheastDrizzle
6pm44°F6°C6 mph9 km/h NortheastCloudy
7pm43°F6°C5 mph8 km/h NortheastDrizzle
8pm42°F6°C5 mph8 km/h NortheastCloudy
9pm42°F6°C4 mph7 km/h NortheastCloudy
DateLowHighWindDayNight
April 739°F4°C51°F11°C6 mph10 km/h from NortheastRainDrizzle
April 833°F1°C44°F6°C17 mph27 km/h from NorthwestWindyClear
April 929°F-1°C48°F9°C8 mph13 km/h from WestClearPartly Cloudy
April 1038°F3°C49°F9°C10 mph17 km/h from SoutheastMostly CloudyRain
April 1143°F6°C49°F9°C10 mph15 km/h from EastRainRain
April 1243°F6°C51°F11°C10 mph16 km/h from NortheastDrizzleRain
April 1342°F6°C49°F9°C12 mph19 km/h from NorthwestRainMostly Cloudy

Yes

Low of 33°F1°C, High of 44°F7°C
Wind: 17 mph27 km/h
Precipitation: None

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