Scout compares the atmosphere in the courthouse before the jury returns to another time and place. What is the time and place?

What Scout compares it to is the day that they had discovered the old, rabid dog Tim Johnson heading down their street, and were all just tense, watching and waiting, seeing what would happen.  They knew something bad would happen, they just didn't know what or in what form.  Of that day, Scout says, "Nothing is more deadly than a deserted, waiting street."  Scout feels the same way waiting for the jury to come in.  She says, "The feeling in the courtroom grew until the atmosphere in the courtroom was exactly the same as a cold February morning...a deserted, waiting, empty street."  She compares everyone just waiting to see what the dangerous dog would to, to everyone just waiting for what the jury would do.  It is a subtle foreshadowing of the negative verdict that was about to be announced; the dog situation didn't end well, and neither did the case, and Scout's emotional radar picked up on that very insightfully.