Sitting on the junk bag you can see my little indoor/outdoor thermometer, and the wire leading to the remote sensor inside the cooler. It's just a cheapie that I've had for several years, but when I've compared it to my Radio Shack Wireless indoor/outdoor at home, it's always been within a few tenths.

"Trunk" is the "Indoor" reading, from the unit itself.

"Cooler" is the "Outdoor" reading, from the remote sensor.

"Outside" I got from Weather.com, "High" is at work, and "Low" is at home. I live in an area of San Diego called Normal Heights, about 10 miles from the coast, and work in El Cajon, about twice as far inland, on the other side of a low ridgeline.

Even for El Cajon, this week was hot. Twice we broke the daily record, and we came within one degree of the record for the entire month.

(I just noticed a typo. Friday was 106, also. All gooder, now. )