cycle from cold to very little cooling..... this seems to occur when the temp is over 90... ...
Low refrigerant.
To check if the pressure is low;
Start the engine and set the A/C to Max and the blower to high.
If you hear the A/C cluch engage and disengage often within the first 5 min, the refrigerant is low.
If this is the first problem you've had with the A/C, you can probably just get a refill kit and fill it back up and it'll be fine for the next 6 months to a year. Over the winter months when you don't use the A/C, the seals shrink a bit and the refrigerant leaks out. Fill it back up and it'll seal up again for a while.
I just fixed mine with the exact same symptoms. 6naline01. Oo.