Coopersburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Coopersburg, a borough in Lehigh County, Pennsylvania.
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. Northeast wind around 0 mph.
7-day forecast for Coopersburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 0 mph | 0% |
| Tonight | 64°F | Mostly Cloudy | 0 mph | 2% |
| Wednesday | 83°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph E | 56% |
| Wednesday Night | 70°F | Showers And Thunderstorms Likely | 0 to 5 mph SE | 61% |
| Thursday | 88°F | Showers And Thunderstorms Likely | 0 to 10 mph SW | 65% |
| Thursday Night | 71°F | Showers And Thunderstorms Likely | 0 to 5 mph SW | 65% |
| Friday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 51% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 51% |
| Saturday | 86°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 41% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 41% |
| Sunday | 87°F | Mostly Sunny | 0 to 5 mph W | 11% |
| Sunday Night | 70°F | Mostly Clear | 0 to 5 mph SW | 11% |
| Monday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph W | 15% |
| Monday Night | 69°F | Slight Chance Showers And Thunderstorms | 0 to 10 mph W | 15% |
Forecast source: National Weather Service (api.weather.gov) for Coopersburg (40.510, -75.392). Updated through the day.
Growing snapshot for Coopersburg
Last spring frost
Apr 21
First fall frost
Oct 22
Growing season
184 days
Hardiness zone
7a
More local growing data for Coopersburg: nearby ZIP 18036 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Springtown 1 Nne, Pa (7.2 mi from Coopersburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.