Ideal attic temperatures shouldn t be more than 10 to 20 degrees hotter than outside temperatures.
Normal attic temperature in summer.
If it s 90 degrees outside the attic temperatures shouldn t exceed 110 according to home inspector jamison brown of amerispec home inspection services in poquoson.
When it comes to adjusting the thermostat of your attic s fan it s best to adjust it to approximately 90 to 95 degrees.
Of course some environments are much hotter than others so this will be the perfect time to measure out how warm your attic will get during the most heated of seasons.
In some cases attic temperatures can reach above the 150 degree mark.
However more often than not.
Aug 14 2017 if you ve ever had to go digging through your attic in the summer to try and find something you realize immediately the temperature in your attic is noticeably hotter.
An overheated attic can bake asphalt shingles on the roof and cause them to deteriorate.