Downingtown, PA Weather & Growing Conditions
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. Northeast wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 0 to 5 mph NE | 0% |
| Tonight | 65°F | Mostly Cloudy | 0 mph | 9% |
| Wednesday | 82°F | Showers And Thunderstorms Likely | 0 to 5 mph E | 73% |
| Wednesday Night | 70°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 46% |
| Thursday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SW | 32% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 42% |
| Friday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph SW | 47% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 47% |
| Saturday | 85°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 41% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 41% |
| Sunday | 86°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 15% |
| Sunday Night | 70°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph SW | 15% |
| Monday | 88°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph W | 17% |
| Monday Night | 70°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 18% |
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 Aug 4, 2026.