Darby, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Darby, a borough in Delaware County, Pennsylvania.
Overnight
62°F
Mostly Cloudy
Mostly cloudy, with a low around 62. Northeast wind around 5 mph.
7-day forecast for Darby
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Mostly Cloudy | 5 mph NE | 0% |
| Saturday | 78°F | Partly Sunny | 5 to 10 mph NE | 2% |
| Saturday Night | 63°F | Mostly Cloudy | 5 to 10 mph E | 10% |
| Sunday | 77°F | Rain Showers Likely | 5 to 10 mph SE | 61% |
| Sunday Night | 62°F | Showers And Thunderstorms Likely | 5 to 10 mph W | 74% |
| Monday | 71°F | Chance Rain Showers | 10 mph NE | 40% |
| Monday Night | 56°F | Chance Rain Showers | 5 to 10 mph NE | 35% |
| Tuesday | 65°F | Chance Rain Showers | 10 to 15 mph NE | 42% |
| Tuesday Night | 54°F | Chance Rain Showers | 10 to 15 mph NE | 40% |
| Wednesday | 65°F | Chance Rain Showers | 15 mph NE | 31% |
| Wednesday Night | 55°F | Chance Rain Showers | 15 mph NE | 33% |
| Thursday | 64°F | Chance Rain Showers | 15 mph NE | 34% |
| Thursday Night | 53°F | Chance Rain Showers | 10 to 15 mph N | 34% |
| Friday | 67°F | Chance Rain Showers | 10 to 15 mph N | 29% |
Forecast source: National Weather Service (api.weather.gov) for Darby (39.921, -75.261). Updated through the day.
Growing snapshot for Darby
Last spring frost
Apr 2
First fall frost
Nov 10
Growing season
224 days
Hardiness zone
7b
More local growing data for Darby: nearby ZIP 19023 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Philadelphia Intl Ap, Pa (3.9 mi from Darby). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.