Past 47 days: Rainfall under 1"; 17% normal
Never in 135 years of weather observations has the period from May 20 through July 6 seen less rain in Chicago. The past 47 days—a period over which 5.72” has fallen (on average) since 1871—hasn’t even managed an inch of rain. The 0.97” on the books is just 17% of the long term average and the least rain to fall in that period since records began.