The average high temperature for this time of year in the Chicago area is 67 degrees.

Over the weekend, we hit 87 two days in a row, with humidity about the same.

And – of course – I was out Sunday in the sun, lugging about 20 lbs. of camera equipment for a portrait shoot. Sweat city.

Today – just three days later – we’re supposed to have a high of 54 – with a low of 45.

Over the weekend, we had the air-conditioning running all day.

Today, we might have to turn the heat on.

Crazy.