Pittsburgh weather in December
December in Pittsburgh: cold, rainy, with clean air — a fair time to visit.
#10 of 12 months in Pittsburgh · #429 of 604 destinations to visit in December · comfort 57/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Pittsburgh climate normals — December
| Daytime high | 7°C / 45°F | 🧥 cold |
|---|---|---|
| Nighttime low | 0°C / 33°F | |
| Feels like (high) | 4°C / 39°F | |
| Rainfall | 94 mm / 3.7 in | 🌧 rainy |
| Rainy days | 13 days | |
| Humidity | 73% | 💧 humid |
| Dew point | -1°C / 29°F | |
| Sunshine | 4.3 h/day | |
| Daylight | 9.3 h | |
| Wind | 16 km/h / 10 mph | |
| Snowfall | 10.1 cm / 4 in | |
| Air quality (US AQI) | 39 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Pittsburgh in December — FAQ
- Is December a good time to visit Pittsburgh?
- December in Pittsburgh: cold, rainy, with clean air — a fair time to visit. It ranks #10 of 12 months for Pittsburgh on SeasonMap's comfort score (57/100).
- What is the weather like in Pittsburgh in December?
- In December, Pittsburgh averages a daily high of 7.2°C and a low of 0.3°C, with about 94.1 mm of rain over roughly 13 rainy days.
- What is the air quality in Pittsburgh in December?
- Pittsburgh has a mean US Air Quality Index of about 39 in December.
- Does it snow in Pittsburgh in December?
- Pittsburgh sees roughly 10.1 cm of snowfall in December.