[V8] Engine Runs a Little Hot

[daves745t at optonline.net]

I'm hoping you guys can give me some suggestions - now that the days are hotter I'm noticing that my 90 V8Q is too. 
This is the first summer I've owned her so I don't have a benchmark on operating temp.  Thus far, when 
she is fully warmed up the temp needle is about a width or two to the left of the 12 o'clock position (just under 100 degrees). 
When the engine is under load and then I come to a stop or if I'm sitting at a red light the temp needle begins to creep up.  
It usually doesn't get past maybe 105 degrees and almost any forward movement brings it back down very quickly

However, now that we've had a string on 90+ degree day here in NJ, the engine temp has got me concerned as it has crept to
 110 and even a little more.  I get no warnings or alarms from the V8, but clearly it should not be getting that high based
 on what I've read here.  The thermostat was changed with the timing belt, the radiator fluid is the good 'red stuff' at the proper level.
  Should I here the electric fan kick on? Because I don't think I have, but then again I haven't stood there with the hood open and looked.

Any thoughts? Thanks as always.

-DaveM