Yes

you do need a jacket based on the weather in Maynooth, Co. Kildare, Ireland 1 second ago

Why? Because sorry, it's too cool for just a hoodie and it's so windy, your hat will probably launch into orbit!
54°F12°C & Windy

Wind is 17 mph28 km/h from the East, gusting to 29 mph47 km/h
April 5
9am54°F12°C18 mph28 km/h EastWindy
10am55°F13°C17 mph28 km/h EastWindy
11am56°F13°C17 mph28 km/h EastWindy
12pm56°F13°C17 mph27 km/h EastWindy
1pm55°F13°C16 mph26 km/h EastWindy
2pm54°F12°C15 mph24 km/h EastWindy
3pm52°F11°C14 mph22 km/h EastClear
4pm50°F10°C12 mph19 km/h EastClear
5pm49°F10°C11 mph18 km/h EastClear
6pm48°F9°C11 mph17 km/h EastClear
7pm48°F9°C10 mph17 km/h EastClear
8pm46°F8°C10 mph15 km/h EastClear
DateLowHighWindDayNight
April 443°F6°C56°F13°C17 mph27 km/h from EastWindyClear
April 540°F5°C58°F15°C11 mph18 km/h from EastClearClear
April 637°F3°C62°F17°C4 mph7 km/h from EastClearClear
April 737°F3°C62°F17°C5 mph8 km/h from NortheastClearClear
April 838°F3°C61°F16°C8 mph13 km/h from NortheastClearClear
April 936°F2°C66°F19°C3 mph4 km/h from NorthwestClearPartly Cloudy
April 1039°F4°C55°F13°C5 mph9 km/h from WestMostly CloudyMostly Cloudy

Yes

Low of 40°F5°C, High of 58°F15°C
Wind: 11 mph18 km/h
Precipitation: None

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