No

you don't need a jacket based on the weather in Horsham, PA, USA 1 second ago

86°F30°C & Mostly Clear

Wind is 7 mph12 km/h from the East, gusting to 12 mph19 km/h
August 15
1pm86°F30°C8 mph12 km/h EastMostly Cloudy
2pm86°F30°C7 mph12 km/h EastMostly Cloudy
3pm86°F30°C7 mph11 km/h EastMostly Cloudy
4pm87°F31°C6 mph10 km/h SoutheastPartly Cloudy
5pm86°F30°C6 mph10 km/h SoutheastPartly Cloudy
6pm85°F29°C6 mph9 km/h SoutheastPartly Cloudy
7pm83°F28°C5 mph9 km/h SoutheastMostly Clear
8pm81°F27°C4 mph6 km/h SoutheastPartly Cloudy
9pm79°F26°C4 mph7 km/h SoutheastMostly Clear
10pm77°F25°C4 mph7 km/h SoutheastMostly Clear
11pm75°F24°C4 mph6 km/h SoutheastMostly Clear
August 16
12am74°F23°C3 mph5 km/h SoutheastPartly Cloudy
DateLowHighWindDayNight
August 1571°F21°C87°F31°C5 mph9 km/h from EastPartly CloudyPartly Cloudy
August 1671°F22°C87°F30°C3 mph5 km/h from SouthPartly CloudyMostly Clear
August 1770°F21°C90°F32°C7 mph10 km/h from WestMostly ClearMostly Clear
August 1869°F20°C80°F27°C8 mph13 km/h from NortheastMostly CloudyPartly Cloudy
August 1965°F18°C75°F24°C8 mph13 km/h from EastMostly CloudyMostly Cloudy
August 2064°F18°C79°F26°C8 mph13 km/h from EastDrizzlePartly Cloudy
August 2165°F18°C79°F26°C8 mph13 km/h from NortheastPartly CloudyMostly Clear

No

Low of 71°F22°C, High of 87°F31°C
Wind: 3 mph5 km/h
Precipitation: 15% rain

Support This Page