About 1 out of every 4 or 5 showers is lukewarm at best. When I get hot showers they are fine (temp + time). I have tried to pay attention to weather temperatures to determine if it might be a factor. But, a warmer day does not always mean a hot shower. I also seem to remember the hot water being hotter in the past. Is it possible that my water heater is dying a slow death?
Steve