Swarthmore, PA Weather & Growing Conditions
Tonight
52°F
Partly Cloudy
Partly cloudy, with a low around 52. Southwest wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Partly Cloudy | 0 to 5 mph SW | 2% |
| Wednesday | 75°F | Patchy Fog then Sunny | 5 to 10 mph S | 4% |
| Wednesday Night | 60°F | Mostly Cloudy | 5 mph S | 6% |
| Thursday | 74°F | Chance Light Rain | 5 to 10 mph S | 38% |
| Thursday Night | 63°F | Light Rain | 5 mph S | 82% |
| Friday | 69°F | Light Rain | 5 mph W | 82% |
| Friday Night | 54°F | Light Rain | 0 to 5 mph NW | 78% |
| Saturday | 66°F | Chance Light Rain then Mostly Sunny | 5 to 10 mph NW | 35% |
| Saturday Night | 45°F | Partly Cloudy | 5 mph NW | 14% |
| Sunday | 61°F | Mostly Sunny | 5 mph W | 6% |
| Sunday Night | 44°F | Slight Chance Light Rain | 5 mph W | 18% |
| Monday | 61°F | Slight Chance Light Rain | 10 mph NW | 22% |
| Monday Night | 42°F | Slight Chance Light Rain | 5 to 10 mph W | 22% |
| Tuesday | 63°F | Sunny | 10 mph W | 14% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Swarthmore, PA
Last spring frost
Apr 2
First fall frost
Nov 10
Growing season
224 days
Hardiness zone
7b
Explore more for Swarthmore, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Philadelphia Intl Ap, Pa (6.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.