What is the weather like in Chicago vs Seattle in December?

In December, Chicago averages 4°C high / -3°C low with about 48 mm of rain; Seattle averages 8°C high / 2°C low with about 103 mm.

Chicago vs Seattle in December

Chicago and Seattle are nearly tied in December — 46 vs 49 on SeasonMap's comfort score. Chicago is cold, a little rain, clean air; Seattle is cold, rainy, clean air.

Chicago vs Seattle — December climate, side by side

	Chicago	Seattle
Comfort score	46/100 (F)	49/100 (F)
Feels-like high	0°C	5°C
Avg high / low	4° / -3°	8° / 2°
Rainfall	48 mm	103 mm
Rainy days	6	14
Humidity	73%	87%
Air quality (AQI)	37	38

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

Chicago vs Seattle in December — FAQ

Is December better in Chicago or Seattle?: Chicago and Seattle are nearly tied in December — 46 vs 49 on SeasonMap's comfort score. Chicago is cold, a little rain, clean air; Seattle is cold, rainy, clean air.
What is the weather like in Chicago vs Seattle in December?: In December, Chicago averages 4°C high / -3°C low with about 48 mm of rain; Seattle averages 8°C high / 2°C low with about 103 mm.