I am south of you and have noticed no sudden signal problems. So I don't think it's a satellite footprint issue.
In addition to the previous poster's advice, is it possible your dish needs to be peaked for maximum signal? Mine tends to degrade over time due to wind or other factors that tweak the dish. You could test it by exerting light pressure on the dish in each of the four directions (without loosening any clamps). If the signal strength or the ebno increases when you apply pressure, you can then loosen the clamps SLIGHTLY and move the dish SLIGHTLY in the direction(s) that improve your signal.