Downingtown, PA Weather & Growing Conditions
Overnight
56°F
Partly Cloudy
Partly cloudy, with a low around 56. Northeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Partly Cloudy | 5 mph NE | 0% |
| Saturday | 74°F | Mostly Sunny | 5 mph NE | 2% |
| Saturday Night | 59°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph SE | 18% |
| Sunday | 74°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 54% |
| Sunday Night | 56°F | Showers And Thunderstorms | 5 mph NW | 79% |
| Monday | 67°F | Chance Rain Showers | 5 to 10 mph NE | 27% |
| Monday Night | 50°F | Chance Rain Showers | 5 to 10 mph NE | 38% |
| Tuesday | 61°F | Chance Rain Showers | 10 mph NE | 43% |
| Tuesday Night | 49°F | Chance Rain Showers | 10 mph NE | 40% |
| Wednesday | 60°F | Chance Rain Showers | 10 to 15 mph NE | 34% |
| Wednesday Night | 49°F | Chance Rain Showers | 10 to 15 mph NE | 32% |
| Thursday | 61°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Thursday Night | 49°F | Chance Rain Showers | 5 to 10 mph NE | 31% |
| Friday | 64°F | Slight Chance Rain Showers | 10 mph N | 24% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Downingtown, PA
Last spring frost
Apr 11
First fall frost
Nov 1
Growing season
205 days
Hardiness zone
7a
Explore more for Downingtown, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Glenmoore, Pa (5.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.