It could also mean that your dish is not aligned properly. Assuming you have dish 500, it may not be pointed correctly. Dish500 is very hard to point since it has to point at two satellites, and getting both correct at the same time takes a good installer.
I did not like rain fade even in thunderstorms, so I changed out my single dish500 to 2 24" dishes. It is much easier to get a strong signal just pointing at one sat with each dish. I put a 35" dish in to point at 61.5 since it is much lower on the horizon for me (hence more rain clouds to go through). I have not lost signal yet on 61.5.
Check your signal levels. On a clear day 119 should be over 110 on most transponders, and 110 should be over 95. I was able to get this with Dish500 before I swapped out the dish. Now I get over 120 on 119, over 105 on 110, and 125 on 61.5