Chalfont, PA Weather & Growing Conditions
This Afternoon
72°F
Mostly Sunny
Mostly sunny, with a high near 72. South wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Mostly Sunny | 5 to 10 mph S | 2% |
| Tonight | 57°F | Mostly Cloudy | 5 to 10 mph S | 2% |
| Thursday | 71°F | Light Rain Likely | 5 to 10 mph S | 62% |
| Thursday Night | 59°F | Light Rain | 0 to 5 mph SW | 85% |
| Friday | 68°F | Light Rain | 0 to 5 mph N | 85% |
| Friday Night | 49°F | Light Rain Likely | 0 to 5 mph NW | 74% |
| Saturday | 62°F | Mostly Sunny | 5 to 10 mph W | 11% |
| Saturday Night | 41°F | Slight Chance Light Rain | 10 mph W | 15% |
| Sunday | 58°F | Mostly Sunny | 5 to 10 mph NW | 4% |
| Sunday Night | 39°F | Mostly Clear | 5 to 10 mph W | 5% |
| Monday | 57°F | Sunny then Slight Chance Light Rain | 10 to 15 mph W | 15% |
| Monday Night | 37°F | Slight Chance Light Rain then Mostly Clear | 5 mph W | 15% |
| Tuesday | 60°F | Sunny | 5 to 15 mph W | 4% |
| Tuesday Night | 39°F | Mostly Clear | 5 mph W | 0% |
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 Nov 4, 2026.