When making an Internet provider decision or even a fixed wireless provider decision, a person needs to consider many factors. Line of sight, redundancy, SLAs, and of course, reliability. A key factor of reliability is ensuring your Internet connection remains stable during as many adverse conditions as possible.
A common question is the effect of weather and rain fade. Because fixed wireless providers utilize radio waves, it might be logical to think that inclement weather such as rain or snow can affect reliability or speed. This is not always the case. It depends on the type of connection (point-to-point or point-to-multipoint: "what’s the difference?”), frequency and also if your provider is supplying something called adaptive modulation.