What is the weather like in Chicago vs San Francisco in January?

In January, Chicago averages 1°C high / -6°C low with about 44 mm of rain; San Francisco averages 15°C high / 9°C low with about 123 mm.

Chicago vs San Francisco in January

San Francisco is the better pick in January — 68 vs 40 on SeasonMap's comfort score. San Francisco is cool, rainy, clean air, while Chicago is freezing, a little rain, clean air.

Chicago vs San Francisco — January climate, side by side

	Chicago	San Francisco
Comfort score	40/100 (F)	68/100 (C)
Feels-like high	-4°C	13°C
Avg high / low	1° / -6°	15° / 9°
Rainfall	44 mm	123 mm
Rainy days	6	10
Humidity	74%	83%
Air quality (AQI)	43	45

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

Chicago vs San Francisco in January — FAQ

Is January better in Chicago or San Francisco?: San Francisco is the better pick in January — 68 vs 40 on SeasonMap's comfort score. San Francisco is cool, rainy, clean air, while Chicago is freezing, a little rain, clean air.
What is the weather like in Chicago vs San Francisco in January?: In January, Chicago averages 1°C high / -6°C low with about 44 mm of rain; San Francisco averages 15°C high / 9°C low with about 123 mm.