I cant think of a single reason tho close it all summer unless theres a big storm.
Old attic windows opening.
2 are ornamental and the other 4 are regular functioning windows.
And if necessary i d keep them open just a crack until you can get some roof vents in place or gable vents.
You should open the window in late spring and close it in early fall.
Thoughtful young woman looking at camera from the window of an attic at sunset.
We do get bugs flies in the summer ladybugs in the fall.
During the summer and most of fall we keep 2 windows open for cross ventilation.
A broken window glass of the attic room of a house with the red shingles roof.
An oval window wooden.
We have a large full attic.
It will vent heat out morning noon and night.
Attic glass open window in an old wooden house with meander ornament.
It gets stifling and stale up there if we don t.
If you leave the attic windows open be sure and staple some screens over them maybe even hardware cloth would be better to keep the critters out bats and raccoons etc will invade your space and give you fits.
Blur background of the city and buildings.
When the attic becomes part of the home to be heated and cooled open wall gable vents and roof vents are no longer feasible but the underside of the roof the sheathing and rafters can still.
The attic needs to be as close to the outside temp as you can get it year round.