Chalfont, PA Weather & Growing Conditions
Today
69°F
Mostly Sunny
Mostly sunny, with a high near 69. Southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 69°F | Mostly Sunny | 5 mph SW | 2% |
| Tonight | 48°F | Patchy Fog | 0 mph | 3% |
| Wednesday | 73°F | Patchy Fog then Mostly Sunny | 0 to 5 mph S | 2% |
| Wednesday Night | 57°F | Mostly Cloudy | 5 mph S | 2% |
| Thursday | 72°F | Chance Light Rain | 5 to 10 mph S | 44% |
| Thursday Night | 60°F | Chance T-storms | 0 to 5 mph SW | 72% |
| Friday | 70°F | Light Rain | 0 to 5 mph SW | 75% |
| Friday Night | 52°F | Light Rain | 0 to 5 mph NW | 75% |
| Saturday | 66°F | Chance Light Rain | 5 mph NW | 27% |
| Saturday Night | 43°F | Slight Chance Light Rain then Partly Cloudy | 0 to 5 mph NW | 17% |
| Sunday | 61°F | Mostly Sunny | 5 mph NW | 13% |
| Sunday Night | 41°F | Partly Cloudy then Slight Chance Light Rain | 0 to 5 mph W | 24% |
| Monday | 58°F | Chance Light Rain | 5 to 10 mph NW | 33% |
| Monday Night | 39°F | Chance Light Rain | 5 to 10 mph W | 33% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Chalfont, PA
Last spring frost
Apr 13
First fall frost
Oct 30
Growing season
198 days
Hardiness zone
7a
Explore more for Chalfont, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Doylestown Ap, Pa (5.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.