Coopersburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Coopersburg, a borough in Lehigh County, Pennsylvania.
Today
73°F
Mostly Sunny
Mostly sunny, with a high near 73. East wind around 5 mph.
7-day forecast for Coopersburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Mostly Sunny | 5 mph E | 1% |
| Tonight | 57°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph SE | 19% |
| Sunday | 71°F | Rain Showers | 5 to 10 mph S | 93% |
| Sunday Night | 55°F | Showers And Thunderstorms | 5 to 10 mph NW | 89% |
| Monday | 68°F | Partly Sunny then Slight Chance Rain Showers | 5 to 10 mph NE | 16% |
| Monday Night | 48°F | Chance Rain Showers | 5 to 10 mph NE | 31% |
| Tuesday | 62°F | Chance Rain Showers | 10 mph NE | 35% |
| Tuesday Night | 47°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Wednesday | 62°F | Chance Rain Showers | 15 mph NE | 26% |
| Wednesday Night | 48°F | Chance Rain Showers | 10 to 15 mph NE | 32% |
| Thursday | 62°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Thursday Night | 48°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Friday | 65°F | Chance Rain Showers | 10 to 15 mph N | 25% |
| Friday Night | 48°F | Slight Chance Rain Showers | 5 to 10 mph N | 24% |
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
Nearby towns & communities
Alburtis
Allentown
Ancient Oaks
Bethlehem
Breinigsville
Catasauqua
Cementon
Cetronia
Coplay
DeSales University
Dorneyville
Egypt
Emmaus
Fountain Hill
Fullerton
Hokendauqua
Laurys Station
Macungie
New Tripoli
North Catasauqua
Schnecksville
Slatedale
Slatington
Stiles
Trexlertown
Wescosville
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 Sep 19, 2026.