What is the weather like in Boston vs Philadelphia in December?

In December, Boston averages 6°C high / -2°C low with about 109 mm of rain; Philadelphia averages 8°C high / 1°C low with about 109 mm.

Boston vs Philadelphia in December

Philadelphia is the better pick in December — 56 vs 46 on SeasonMap's comfort score. Philadelphia is cold, rainy, clean air, while Boston is cold, rainy, clean air.

Boston vs Philadelphia — December climate, side by side

	🇺🇸 Boston	🇺🇸 Philadelphia
Comfort score	46/100 (F)	56/100 (D)
Feels-like high	1°C	4°C
Avg high / low	6° / -2°	8° / 1°
Rainfall	109 mm	109 mm
Rainy days	9	10
Humidity	72%	70%
Air quality (AQI)	40	49

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Boston vs Philadelphia in December — FAQ

Is December better in Boston or Philadelphia?: Philadelphia is the better pick in December — 56 vs 46 on SeasonMap's comfort score. Philadelphia is cold, rainy, clean air, while Boston is cold, rainy, clean air.
What is the weather like in Boston vs Philadelphia in December?: In December, Boston averages 6°C high / -2°C low with about 109 mm of rain; Philadelphia averages 8°C high / 1°C low with about 109 mm.