If your pool is like any other pool in North Texas it has been overfilled a time or two from the heavy rains. The rain water that wound up in your pool has some benefits and some negative effects.
If the pool has a working overflow, all pools should have one; the water entering the pool will not overfill the pool and it will just flow out of the overflow into the drainage area in the yard. It there is not an overflow installed in the pool there is a good chance some damage to the coping and/or decking is/has occurred if the water level has not been corrected. The mortar joint between the tile and coping is not watertight. When the water level is on that mortar joint it will leach through the mortar. It can escape the pool, get under the pool deck, and contribute to calcium deposits on the mortar. Water present in either of those areas will contribute to premature failure of the coping or the decking.
If your pool water chemistry is too high in Cyanuric Acid (CYA) or Calcium, the high rain volumes we have received might have benefited your pool chemistry. However, you must have a working overflow for this to be a benefit. The heavy rains may have helped to dilute your high CYA level in the pool by causing bad water to exit the pool through the overflow. It might also have helped high Calcium levels by replacing some of that water with low Calcium rain water.
The heavy rains may have also caused your pool to be become extremely dirty. The storms no doubt have sent a great deal of debris into your pool as well. Keeping your pool clean and inviting during a month that saw record breaking rains is a challenge for even seasoned pool professionals.
Last but not least, the heavy rains definitely have not allowed your pool to warm up just quite yet either. The pool waters all over North Texas are still chilly.