Jordan,
Are you sure you're not getting the engine temp and trans temp confused? My powertrain is the same generation and my trans temp does run at 204-210 regularly, even when not hot outside. I've learned (from reliable sources) that that's simply it's normal range. But the engine runs much less and when at 200+, i consider that too warm for the engine coolant.

The dashboard gauge on the left is the engine temp.
The DDEC digital display under the "Gauge Mode" menu has a trans temp, which is indicated by a circle with gears coming out of it with a fluid graphic in the center. The spikes around the circle indicate the transmission.

But either way, I also suggest cleaning out your radiator(s) with strong stream of water and a soap mixture. Be careful about any brushes, just use a strong stream of soapy water.

Let us know your results.