United States · 1991–2020 normal
Slippery Rock in
December.
Typical December weather in Slippery Rock: 4.6°C by day, -4.8°C at night, 80 mm of rain over 11.4 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high4.6°C
Typical low-4.8°C
Rain80 mm
Wet days11.4
Comfort score 5 this month (September leads the year at 74). Daylight is calculated as 9 h 14 from latitude 41.06°.
Event window
Frost-level nights in December
The measured night-time normal is -4.8°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5212532
- NOAA station
- USC00368184 · SLIPPERY ROCK 1 SSW
- Station distance
- 0.9 km from the place centre
- Coverage
- Strong coverage · 29 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.