Just now, at Inner Drive Technology World Headquarters:
(Compare with four years ago, when I bought the thermometer while sojourning in North Carolina.)
The official temperature at O'Hare is -27°C, breaking the previous record of -25°C set in 1988. We might even break the record low maximum temperature—the coldest high temperature ever on this date—of -18°C set in 1912.
I have not gone outside today, and until I take Parker out after he gets back from day care, I have not plans to do so.
At least the cold snap will be brief; they're forecasting above-freezing temperatures by Friday.