Yes

you do need a jacket based on the weather in Ballyjamesduff (Cornahilt), County Cavan, Ireland 1 second ago

Why? Because it's cool. Pleasantly cool, but cool and the wind could blow a wig clean off your head!
55°F13°C & Cloudy

Wind is 12 mph20 km/h from the Southwest, gusting to 23 mph37 km/h
August 27
8pm54°F12°C13 mph20 km/h SouthwestCloudy
9pm54°F12°C13 mph21 km/h SouthDrizzle
10pm54°F12°C13 mph21 km/h SouthDrizzle
11pm54°F12°C13 mph21 km/h SouthDrizzle
August 28
12am54°F12°C13 mph21 km/h SouthDrizzle
1am54°F12°C13 mph21 km/h SouthwestDrizzle
2am54°F12°C13 mph20 km/h SouthwestDrizzle
3am55°F13°C13 mph20 km/h SouthwestDrizzle
4am55°F13°C13 mph20 km/h SouthwestDrizzle
5am55°F13°C14 mph22 km/h SouthwestDrizzle
6am55°F13°C14 mph23 km/h SouthwestDrizzle
7am56°F13°C16 mph26 km/h SouthwestDrizzle
DateLowHighWindDayNight
August 2754°F12°C59°F15°C15 mph24 km/h from SouthwestRainDrizzle
August 2852°F11°C62°F17°C15 mph23 km/h from WestDrizzleMostly Cloudy
August 2952°F11°C63°F17°C16 mph25 km/h from SouthRainDrizzle
August 3053°F12°C60°F16°C17 mph28 km/h from SouthwestDrizzleDrizzle
August 3152°F11°C60°F16°C13 mph21 km/h from WestRainDrizzle
September 151°F11°C61°F16°C10 mph17 km/h from SouthwestDrizzleDrizzle
September 250°F10°C62°F17°C7 mph11 km/h from NortheastDrizzlePartly Cloudy

Yes

Low of 52°F11°C, High of 63°F17°C
Wind: 15 mph23 km/h
Precipitation: 42% rain

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