United States · 1991–2020 normal
Coplay in
December.
Typical December weather in Coplay: 5.7°C by day, -3.2°C at night, 98 mm of rain over 9.1 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high5.7°C
Typical low-3.2°C
Rain98 mm
Wet days9.1
Comfort score 5 this month (September leads the year at 77). Daylight is calculated as 9 h 16 from latitude 40.67°.
Event window
Frost-level nights in December
The measured night-time normal is -3.2°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5185397
- NOAA station
- USW00014737 · ALLENTOWN LEHIGH VLY INTL AP
- Station distance
- 4.6 km from the place centre
- Coverage
- Strong coverage · 30 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.