No
you don't need a jacket based on the weather in Chalfont, PA 18914, USA 20 minutes ago
81°F27°C & Cloudy
Wind is 6 mph10 km/h from the Southwest, gusting to 13 mph21 km/h
| July 27 | ||||
| 1pm | 82°F28°C | 7 mph11 km/h Southwest | Thunderstorms | |
| 2pm | 82°F28°C | 7 mph11 km/h Southwest | Cloudy | |
| 3pm | 84°F29°C | 7 mph12 km/h Southwest | Mostly Cloudy | |
| 4pm | 83°F28°C | 8 mph13 km/h West | Thunderstorms | |
| 5pm | 83°F28°C | 6 mph10 km/h West | Mostly Cloudy | |
| 6pm | 83°F28°C | 6 mph10 km/h West | Mostly Cloudy | |
| 7pm | 82°F28°C | 5 mph8 km/h West | Partly Cloudy | |
| 8pm | 80°F27°C | 4 mph7 km/h West | Partly Cloudy | |
| 9pm | 78°F26°C | 4 mph7 km/h West | Mostly Clear | |
| 10pm | 77°F25°C | 4 mph7 km/h West | Mostly Clear | |
| 11pm | 76°F25°C | 4 mph7 km/h West | Clear | |
| July 28 | ||||
| 12am | 75°F24°C | 4 mph6 km/h Northwest | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| July 27 | 70°F21°C | 84°F29°C | 5 mph8 km/h from Southwest | Thunderstorms | Mostly Clear |
| July 28 | 72°F22°C | 90°F32°C | 5 mph7 km/h from Northwest | Clear | Mostly Clear |
| July 29 | 72°F22°C | 93°F34°C | 4 mph6 km/h from Northwest | Clear | Clear |
| July 30 | 74°F23°C | 94°F34°C | 5 mph9 km/h from Southwest | Mostly Clear | Partly Cloudy |
| July 31 | 70°F21°C | 85°F29°C | 6 mph9 km/h from North | Thunderstorms | Rain |
| August 1 | 65°F19°C | 79°F26°C | 8 mph13 km/h from Northeast | Drizzle | Partly Cloudy |
| August 2 | 61°F16°C | 76°F25°C | 6 mph10 km/h from Northeast | Mostly Clear | Mostly Clear |
No
Low of 72°F22°C, High of 91°F33°CWind: 5 mph7 km/h
Precipitation: None