Thats okay considering you have a Stock Cooler.
I have the same cpu and a NZXT Kraken X60.
My System idles at 34-38 degress celsius.
A lot depends on the ambient temperatures , so if you have a room or house thats actually warm , the CPU temperatures are supposed to rise.
In My case this holds perfect , because on early mornings when its cold my System used to idle at a freakin' 29 Deg C.
Otherwise in daytime it hits even 39 on any core , but doesnt pass that.
Anyways , while Gaming/Load the System at any cost doesnt cross the 60-61 Deg C mark , this is the same case when i run IBT/Prime95. Seems the CPU Cooler is doing its job.
And no game stresses the CPU so much as they do.
I'd rather be more worried about GPU Temps , mine touches 72 on Full Load and even that's okay i heard.
Anyways in your case check if your room or the place you keep the CPU if its warm or if you could fit a Cooler/Air Conditioner in that room , especially in Summers as it gets nasty that time.
I shared my experience , and i recommend you a CM 212 EVO at least.
if you can spend more go for a AIO Cooling solution.