Chalfont, PA Weather & Growing Conditions
Today
73°F
Mostly Sunny
Mostly sunny, with a high near 73. East wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Mostly Sunny | 5 to 10 mph E | 1% |
| Tonight | 58°F | Mostly Cloudy | 5 to 10 mph SE | 13% |
| Sunday | 72°F | Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 82% |
| Sunday Night | 56°F | Showers And Thunderstorms | 5 to 10 mph W | 81% |
| Monday | 67°F | Chance Rain Showers | 5 to 10 mph NE | 27% |
| Monday Night | 50°F | Chance Rain Showers | 5 to 10 mph NE | 34% |
| Tuesday | 61°F | Chance Rain Showers | 10 to 15 mph NE | 38% |
| Tuesday Night | 49°F | Chance Rain Showers | 10 to 15 mph NE | 35% |
| Wednesday | 61°F | Chance Rain Showers | 15 mph NE | 28% |
| Wednesday Night | 49°F | Chance Rain Showers | 15 mph NE | 32% |
| Thursday | 61°F | Chance Rain Showers | 15 mph NE | 33% |
| Thursday Night | 48°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Friday | 64°F | Chance Rain Showers | 10 to 15 mph N | 30% |
| Friday Night | 49°F | Chance Rain Showers | 5 to 15 mph N | 26% |
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 Sep 19, 2026.