Final answer:
The temperature lower than -5°C in Chicago is -6°C. To truly understand Chicago's weather patterns, analyzing historical weather data is essential for a comprehensive view of climate trends.
Step-by-step explanation:
The temperature that is lower than -5°C in Chicago is -6°C. When comparing temperatures in degrees Celsius (or any other scale), a lower number indicates a colder temperature. Given the options provided, -6°C is the only temperature that is colder than -5°C because it represents a degree lower on the Celsius scale. The temperatures -4°C, 1°C, and 5°C, are all higher than -5°C.
To understand the typical weather pattern in Chicago, rather than just one-time extremes, looking at prolonged historical data is necessary. This will provide a broader view of the weather dynamics through different seasons and years.