<P> Temperatures can vary tremendously in the springtime ; at 100 ° F ( 38 ° C ) , March is the month with the greatest span between the record high and low . At O'Hare , temperatures as low as 7 ° F ( − 14 ° C ) and 31 ° F ( − 1 ° C ) have been recorded as late as April 7 and May 21 , respectively . Conversely , in official records , the earliest triple - digit ( 100 ° F ( 38 ° C ) ) high occurred on June 1 , 1934 , when official readings were taken closer to Lake Michigan . Though rare , triple - digit heat has occurred in May at Midway Airport and in outlying suburban locations . Typically , the last freezing low of the season on average occurs on April 13 at Midway and ten days later at O'Hare . </P>
<P> Temperatures can vary tremendously in the springtime ; at 100 ° F ( 38 ° C ) , March is the month with the greatest span between the record high and low . At O'Hare , temperatures as low as 7 ° F ( − 14 ° C ) and 31 ° F ( − 1 ° C ) have been recorded as late as April 7 and May 21 , respectively . Conversely , in official records , the earliest triple - digit ( 100 ° F ( 38 ° C ) ) high occurred on June 1 , 1934 , when official readings were taken closer to Lake Michigan . Though rare , triple - digit heat has occurred in May at Midway Airport and in outlying suburban locations . Typically , the last freezing low of the season on average occurs on April 13 at Midway and ten days later at O'Hare . </P>
when does the weather get warmer in chicago
when does the weather get warmer in chicago
springtime
springtime