March in Chicago is known for its unpredictable weather as winter transitions into spring, and historical weather records for March 19 reveal some interesting extremes. The highest temperature ever recorded on March 19 in Chicago was 78°F (26°C) in 2012, contrasting sharply with the typical chilly conditions. Conversely, the lowest temperature recorded on the same date was a frigid 0°F (-18°C) in 1923, highlighting the potential for late-season winter blasts. Precipitation records also show significant fluctuations, with the highest rainfall recorded at 2.5 inches in 1948 and snowfall reaching 4.1 inches in 1986.