Coopersburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Coopersburg, a borough in Lehigh County, Pennsylvania.
Overnight
48°F
Mostly Clear
Mostly clear, with a low around 48. Wind around 0 mph.
7-day forecast for Coopersburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 48°F | Mostly Clear | 0 mph | 1% |
| Wednesday | 73°F | Sunny | 0 to 10 mph S | 2% |
| Wednesday Night | 57°F | Mostly Cloudy then Patchy Fog | 5 mph S | 5% |
| Thursday | 71°F | Light Rain Likely | 5 to 10 mph S | 70% |
| Thursday Night | 59°F | Light Rain | 0 to 5 mph SW | 81% |
| Friday | 69°F | Light Rain Likely | 0 mph | 66% |
| Friday Night | 48°F | Chance Light Rain | 0 to 5 mph NW | 50% |
| Saturday | 63°F | Mostly Sunny then Slight Chance Light Rain | 5 to 10 mph W | 17% |
| Saturday Night | 41°F | Slight Chance Light Rain | 5 to 10 mph W | 17% |
| Sunday | 59°F | Mostly Sunny | 5 to 10 mph NW | 4% |
| Sunday Night | 37°F | Mostly Clear | 5 mph W | 5% |
| Monday | 58°F | Sunny then Slight Chance Light Rain | 5 to 15 mph W | 15% |
| Monday Night | 35°F | Slight Chance Light Rain then Mostly Clear | 5 to 10 mph W | 15% |
| Tuesday | 61°F | Sunny | 5 to 15 mph W | 4% |
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 Nov 4, 2026.