Turn your computer off when it's hot out :
trollface.jpg: But you're already doing that.
You don't still have a crappy stock cooling system, right? I swear they only include those because they assume everyone will replace them. A cheap whatever brand/size heat pipe works wonders. You can usually find one for $20 on Amazon. Last one I bought came with two fans when fans often cost $10 a pop.
Edit: Check out this piece of crap. $15, 92mm should fit in smaller cases.
https://www.amazon.com/ID-COOLING-SE...dp/B0CJY5LH65/
Or this enormous monstrosity with two 120mm fans for $28.
https://www.amazon.com/upHere-Cooler...dp/B0CRDX9F1V/