Yes

you do need a jacket based on the weather in Treforest, Pontypridd CF37 1SH, UK 1 second ago

Why? Because it's raining in your area and it's cool. Pleasantly cool, but cool and it's on the windy side!
55°F13°C & Rain

Wind is 11 mph18 km/h from the South, gusting to 24 mph39 km/h
November 9
6pm55°F13°C11 mph18 km/h SouthDrizzle
7pm55°F13°C10 mph17 km/h SouthDrizzle
8pm55°F13°C9 mph15 km/h SouthDrizzle
9pm55°F13°C8 mph13 km/h SouthDrizzle
10pm54°F12°C8 mph13 km/h SouthRain
11pm54°F12°C7 mph11 km/h SouthDrizzle
November 10
12am53°F12°C6 mph9 km/h SouthMostly Cloudy
1am52°F11°C6 mph9 km/h SouthMostly Cloudy
2am52°F11°C6 mph9 km/h SouthwestMostly Cloudy
3am51°F11°C6 mph9 km/h SouthwestDrizzle
4am51°F10°C6 mph10 km/h SouthwestMostly Cloudy
5am50°F10°C6 mph10 km/h SouthwestDrizzle
DateLowHighWindDayNight
November 946°F8°C56°F13°C7 mph11 km/h from SouthRainRain
November 1047°F9°C53°F12°C7 mph12 km/h from SouthwestRainRain
November 1147°F8°C58°F14°C18 mph28 km/h from SouthRainRain
November 1253°F12°C58°F15°C6 mph10 km/h from SouthRainRain
November 1351°F11°C57°F14°C7 mph11 km/h from SouthDrizzleRain
November 1449°F9°C55°F13°C12 mph19 km/h from NortheastRainRain
November 1544°F7°C50°F10°C10 mph16 km/h from NortheastRainMostly Cloudy

Yes

Low of 47°F9°C, High of 54°F12°C
Wind: 7 mph12 km/h
Precipitation: 85% rain

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