Chalfont, PA Weather & Growing Conditions
Today
83°F
Mostly Sunny
Mostly sunny, with a high near 83. East wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Mostly Sunny | 0 to 5 mph E | 0% |
| Tonight | 64°F | Mostly Cloudy | 0 mph | 4% |
| Wednesday | 82°F | Chance Showers And Thunderstorms | 0 to 5 mph E | 53% |
| Wednesday Night | 70°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 68% |
| Thursday | 87°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 5 to 10 mph SW | 42% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 46% |
| Friday | 87°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 5 mph SW | 46% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 46% |
| Saturday | 85°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 39% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 39% |
| Sunday | 86°F | Mostly Sunny | 0 to 5 mph W | 12% |
| Sunday Night | 70°F | Mostly Clear | 0 to 5 mph SW | 12% |
| Monday | 87°F | Sunny | 0 to 10 mph W | 11% |
| Monday Night | 69°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph W | 17% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Chalfont, PA
Last spring frost
Apr 26
First fall frost
Oct 17
Growing season
175 days
Hardiness zone
7a
Explore more for Chalfont, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Sellersville, Pa (4.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.