SeasonMapChicago vs Portland in December
Chicago and Portland are nearly tied in December — 46 vs 45 on SeasonMap's comfort score. Chicago is cold, a little rain, clean air; Portland is cold, soaked, clean air.
Chicago vs Portland — December climate, side by side
| Chicago | Portland | |
|---|---|---|
| Comfort score | 46/100 (F) | 45/100 (F) |
| Feels-like high | 0°C | 6°C |
| Avg high / low | 4° / -3° | 8° / 4° |
| Rainfall | 48 mm | 184 mm |
| Rainy days | 6 | 18 |
| Humidity | 73% | 88% |
| Air quality (AQI) | 37 | 34 |
Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.
Chicago vs Portland in December — FAQ
- Is December better in Chicago or Portland?
- Chicago and Portland are nearly tied in December — 46 vs 45 on SeasonMap's comfort score. Chicago is cold, a little rain, clean air; Portland is cold, soaked, clean air.
- What is the weather like in Chicago vs Portland in December?
- In December, Chicago averages 4°C high / -3°C low with about 48 mm of rain; Portland averages 8°C high / 4°C low with about 184 mm.