Radiator fan working too frequently/loud?
 

The climate here is around 73 F or 23 C, not using A/C at the moment.

What I've noticed is that while driving around for only about 20-30 minutes during evenings (it's worse when it's light out), I can hear a real loud radiator fan working frequently (It's very loud. From inside the cabin I thought it was coming from some other old vehicle sitting next in traffic).
The heat shouldn't be that bad in the engine. It was city-driving, but not much traffic around. And no A/C turned on. How is it gonna deal with the real heat when summer hits. I don't want it to get overheated too easily due to a faulty cooling system.

For a 3.0 gasoline engine is this normal? I was worried there might be something wrong with the cooling system. I don't think the coolant is low.
At times like this I really wish the X5 had an engine temperature gauge.

my wife's '07 328 had this issue recently. i changed the oil mid BMW Service cycle and it appears to be running cooler.

my 08 4.8 is beginning to do the same thing with about 5k on the oil change interval.

i can't help but wonder..........