Yes

you do need a jacket based on the weather in Blackburn BB2 2SA, UK 1 second ago

Why? Because it's cool. Pleasantly cool, but cool!
57°F14°C & Mostly Cloudy

Wind is 7 mph11 km/h from the South, gusting to 16 mph25 km/h
May 31
3am58°F14°C8 mph13 km/h SouthMostly Cloudy
4am60°F16°C10 mph17 km/h SouthMostly Cloudy
5am62°F17°C12 mph19 km/h SouthwestPartly Cloudy
6am65°F18°C13 mph21 km/h SouthwestPartly Cloudy
7am66°F19°C13 mph21 km/h SouthwestPartly Cloudy
8am67°F19°C14 mph22 km/h SouthwestPartly Cloudy
9am68°F20°C15 mph24 km/h SouthwestMostly Clear
10am69°F20°C15 mph25 km/h SouthwestWindy
11am68°F20°C15 mph25 km/h SouthwestWindy
12pm67°F20°C16 mph26 km/h SouthwestWindy
1pm66°F19°C16 mph26 km/h SouthwestWindy
2pm63°F17°C16 mph26 km/h SouthwestWindy
DateLowHighWindDayNight
May 3053°F11°C69°F20°C13 mph21 km/h from SouthwestPartly CloudyPartly Cloudy
May 3149°F10°C60°F16°C17 mph27 km/h from WestDrizzlePartly Cloudy
June 147°F8°C61°F16°C11 mph17 km/h from WestPartly CloudyRain
June 248°F9°C58°F14°C18 mph30 km/h from WestRainPartly Cloudy
June 345°F7°C58°F15°C15 mph24 km/h from WestMostly CloudyMostly Cloudy
June 445°F7°C58°F14°C9 mph14 km/h from SouthwestDrizzleMostly Cloudy
June 547°F8°C60°F16°C11 mph17 km/h from WestDrizzleMostly Cloudy

Yes

Low of 49°F10°C, High of 61°F16°C
Wind: 17 mph27 km/h
Precipitation: 36% rain

Support This Page