Chicago is bracing for a brief period of cooler temperatures before a weekend warmup. Highs will reach only into the 40s°F (4-9°C) on Wednesday. According to CBS News, meteorologist Kylee Miller has indicated that this cold spell will be short-lived, with milder conditions expected later in the week. This temperature shift is typical for this time of year, as transitional weather patterns bring fluctuations in daily highs and lows.